What is rooting reflex in child

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rooting reflex newborn infant

Two clinical photographs demonstrate the application of Stage 1 reflex rolling in Vojta therapy on an infant. The infant is positioned in a supine (decubitus dorsalis) position on a therapy table. The therapist is shown applying specific tactile stimulation and resistance to facilitate innate motor patterns. One hand of the therapist provides resistance at the head, specifically targeting the zygomatic bone, nuchal line, and mastoid tuberosity to inhibit head rotation, while the other hand stimulates the pectoral or chest area. The images capture kinesiological responses, including limb extension and elevation. The clinical focus is on neurorehabilitative intervention for infants with motor development impairments, such as hypertonia or hypotonia following neonatal hypoxia. The infant's facial expression indicates the intense physical effort or sensory input characteristic of this neuromuscular activation therapy. This visual serves as an educational guide for pediatric physical therapy and diagnostic reflex locomotion assessment.

Two clinical photographs demonstrate the application of Stage 1 reflex rolling in Vojta therapy on an infant. The infant is positioned in a supine (decubitus dorsalis) position on a therapy table. The therapist is shown applying specific tactile stimulation and resistance to facilitate innate motor patterns. One hand of the therapist provides resistance at the head, specifically targeting the zygomatic bone, nuchal line, and mastoid tuberosity to inhibit head rotation, while the other hand stimulates the pectoral or chest area. The images capture kinesiological responses, including limb extension and elevation. The clinical focus is on neurorehabilitative intervention for infants with motor development impairments, such as hypertonia or hypotonia following neonatal hypoxia. The infant's facial expression indicates the intense physical effort or sensory input characteristic of this neuromuscular activation therapy. This visual serves as an educational guide for pediatric physical therapy and diagnostic reflex locomotion assessment.

A clinical photograph illustrating a pediatric physical therapy session, specifically demonstrating Vojta therapy and the reflex crawling (Reflexkriechen) technique. The infant is positioned in a prone posture on a stable red treatment surface within a clinical or educational setting. A therapist's hands are visible, applying specific tactile stimuli and directional pressure to trigger global motor patterns. The infant's posture shows asymmetrical limb positioning characteristic of the crawling reflex: one arm is extended while the ipsilateral leg is flexed toward the torso, and the opposite limbs are in a complementary state of extension and flexion. This technique is often used in the rehabilitation of motor development delays and conditions such as muscular torticollis to improve neurological maturation and postural control. The image serves as an educational example of neuro-developmental treatment (NDT) and the assessment of primitive reflexes in infants.

A clinical photograph illustrating a pediatric physical therapy session, specifically demonstrating Vojta therapy and the reflex crawling (Reflexkriechen) technique. The infant is positioned in a prone posture on a stable red treatment surface within a clinical or educational setting. A therapist's hands are visible, applying specific tactile stimuli and directional pressure to trigger global motor patterns. The infant's posture shows asymmetrical limb positioning characteristic of the crawling reflex: one arm is extended while the ipsilateral leg is flexed toward the torso, and the opposite limbs are in a complementary state of extension and flexion. This technique is often used in the rehabilitation of motor development delays and conditions such as muscular torticollis to improve neurological maturation and postural control. The image serves as an educational example of neuro-developmental treatment (NDT) and the assessment of primitive reflexes in infants.

This grayscale clinical photograph depicts the palmar grasp reflex in a preterm infant. The focus is on the infant's hand and forearm as it securely grips a small, smooth cylindrical object. The infant's fingers are flexed around the cylinder, demonstrating the tactile and motor response characteristic of the primitive grasp reflex. The cylinder, approximately 35 mm in length and 6 mm in diameter, is positioned within the palm, with the distal end protruding. In the blurred background, the infant's face is partially visible, indicating the neonatal clinical setting. This image serves as an educational tool for neonatal development, illustrating haptic perception and sensorimotor coordination in premature newborns. It is particularly relevant for pediatric and neonatal research focusing on the maturation of the central nervous system and the evaluation of primitive reflexes as indicators of neurological health.

This grayscale clinical photograph depicts the palmar grasp reflex in a preterm infant. The focus is on the infant's hand and forearm as it securely grips a small, smooth cylindrical object. The infant's fingers are flexed around the cylinder, demonstrating the tactile and motor response characteristic of the primitive grasp reflex. The cylinder, approximately 35 mm in length and 6 mm in diameter, is positioned within the palm, with the distal end protruding. In the blurred background, the infant's face is partially visible, indicating the neonatal clinical setting. This image serves as an educational tool for neonatal development, illustrating haptic perception and sensorimotor coordination in premature newborns. It is particularly relevant for pediatric and neonatal research focusing on the maturation of the central nervous system and the evaluation of primitive reflexes as indicators of neurological health.

Clinical photograph demonstrating the 'doll's head manoeuvre' (oculocephalic reflex testing) performed on an infant in a pediatric or neuro-ophthalmological setting. The infant is seated on a caregiver's lap, who provides trunk stabilization. A clinical examiner, positioned in front of the infant, gently but firmly holds the child's head with both hands placed laterally over the parietal-temporal regions. The image illustrates the correct positioning for manual head rotation to assess the Vestibulo-Ocular Reflex (VOR). The procedure involves rapid horizontal or vertical head movements while observing the infant's eyes; a normal response is the maintenance of steady gaze or eye movement in the direction opposite to the head rotation. This clinical test is essential for evaluating brainstem function and vestibular system integrity in non-verbal or uncooperative pediatric patients, provided there are no contraindications such as cervical spine instability.

Clinical photograph demonstrating the 'doll's head manoeuvre' (oculocephalic reflex testing) performed on an infant in a pediatric or neuro-ophthalmological setting. The infant is seated on a caregiver's lap, who provides trunk stabilization. A clinical examiner, positioned in front of the infant, gently but firmly holds the child's head with both hands placed laterally over the parietal-temporal regions. The image illustrates the correct positioning for manual head rotation to assess the Vestibulo-Ocular Reflex (VOR). The procedure involves rapid horizontal or vertical head movements while observing the infant's eyes; a normal response is the maintenance of steady gaze or eye movement in the direction opposite to the head rotation. This clinical test is essential for evaluating brainstem function and vestibular system integrity in non-verbal or uncooperative pediatric patients, provided there are no contraindications such as cervical spine instability.

This clinical photograph shows a newborn infant in a supine position, representing standard neonatal care and attire within a maternity ward setting. The infant is dressed in a light-colored, long-sleeved cotton shirt and matching leggings. The shirt is designed with a side-tie closure, currently open at the abdomen to allow for clinical observation or umbilical cord care. The infant appears in a relaxed, sleeping state with closed eyes and arms flexed toward the head, indicating normal neurological tone and comfort. The infant is placed on a flat, padded surface covered with a protective sheet, typical of a nursery changing station or bassinet. A plush toy is visible near the feet. This image serves to illustrate traditional postpartum care practices and the use of loose-fitting infant apparel as an alternative to swaddling in clinical research focused on early infant development and breastfeeding outcomes.

This clinical photograph shows a newborn infant in a supine position, representing standard neonatal care and attire within a maternity ward setting. The infant is dressed in a light-colored, long-sleeved cotton shirt and matching leggings. The shirt is designed with a side-tie closure, currently open at the abdomen to allow for clinical observation or umbilical cord care. The infant appears in a relaxed, sleeping state with closed eyes and arms flexed toward the head, indicating normal neurological tone and comfort. The infant is placed on a flat, padded surface covered with a protective sheet, typical of a nursery changing station or bassinet. A plush toy is visible near the feet. This image serves to illustrate traditional postpartum care practices and the use of loose-fitting infant apparel as an alternative to swaddling in clinical research focused on early infant development and breastfeeding outcomes.

Clinical photograph of a newborn immediately following delivery, likely via cesarean section as indicated by the surgical setting. The infant presents with a healthy reddish skin tone (erythema neonatorum) and is partially covered in vernix caseosa, a protective white, creamy biofilm visible on the face, scalp, and limbs. The newborn is lying in a supine position on a green sterile surgical drape. Anatomical features include a flexed posture of the lower extremities and a blue plastic umbilical cord clamp applied to the umbilical stump. The face shows mild physiological edema common in neonates. This image serves as an educational example of immediate neonatal appearance and the outcome of obstetric anesthetic management. For patient privacy, the eyes are obscured by a black bar.

Clinical photograph of a newborn immediately following delivery, likely via cesarean section as indicated by the surgical setting. The infant presents with a healthy reddish skin tone (erythema neonatorum) and is partially covered in vernix caseosa, a protective white, creamy biofilm visible on the face, scalp, and limbs. The newborn is lying in a supine position on a green sterile surgical drape. Anatomical features include a flexed posture of the lower extremities and a blue plastic umbilical cord clamp applied to the umbilical stump. The face shows mild physiological edema common in neonates. This image serves as an educational example of immediate neonatal appearance and the outcome of obstetric anesthetic management. For patient privacy, the eyes are obscured by a black bar.

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Here is a thorough answer on the rooting reflex in children, drawn from authoritative medical textbooks:

Rooting Reflex in Children

Definition

The rooting reflex is a primitive neonatal reflex in which a newborn opens their mouth and turns their head toward the direction of stimulation when the skin near the mouth or cheek is stroked or touched. It is sometimes described as puckering of the lips in response to perioral (around the mouth) stimulation.

How to Elicit It

Maneuver: Stroke the skin near the corner of the mouth or cheek of the newborn.
Response: The newborn opens their mouth and turns their head toward the side of stimulation - seeking the stimulus as if searching for a nipple.

Purpose and Significance

The rooting reflex is a survival reflex - it helps the newborn locate the mother's nipple or a feeding teat to initiate breastfeeding. Newborn feeding is primarily reflexive, and the rooting reflex is what allows the baby to "latch on" to the nipple. It works in tandem with the sucking reflex - once the baby roots and latches, sucking generates intraoral pressure to extract milk.

Age of Appearance and Disappearance

FeatureDetail
Present fromBirth
Disappears3-4 months of age (normal)
In sleepMay persist up to 12 months during sleep

Classification

The rooting reflex is one of several primitive neurologic reflexes present at birth. These include:
Primitive ReflexAges Present
Stepping reflexBirth to 1-2 months
Galant reflexBirth to 2 months
Asymmetric tonic neck reflexBirth to 2-4 months
Rooting reflexBirth to 3-4 months
Palmar/plantar grasp reflexBirth to 3-4 months
Moro (startle) reflexBirth to 4-6 months
Babinski reflexBirth to 12 months

Clinical Relevance

  1. Normal development: Presence of the rooting reflex in a newborn confirms normal brainstem function and neurological integrity. Absence at birth is a warning sign.
  2. Persistence beyond expected age: If the rooting reflex does not disappear by 3-4 months, it may indicate a neurological problem such as cerebral palsy or developmental delay - primitive reflexes are normally suppressed by maturing cortical (frontal lobe) pathways.
  3. Re-emergence in adults (frontal release sign): The rooting reflex can re-appear in adults with frontal lobe damage - such as bilateral damage to mesiofrontal structures, anterior cerebral artery (ACA) infarction, or diffuse cortical disease. In this context it is called a "frontal release sign" alongside sucking and snout reflexes, indicating loss of normal cortical inhibition. Per Localization in Clinical Neurology, "turning of the mouth toward a round object that approaches the patient's mouth or gently strokes her cheek (rooting reflex)... may reflect impairment of the corticobulbar projection."

Summary

The rooting reflex is a normal primitive reflex present from birth that helps newborns find food. It disappears by 3-4 months as the maturing cortex takes over voluntary motor control. Its absence in a newborn or its persistence beyond 4 months (or re-emergence in an adult) are clinically significant neurological signs.
  • Textbook of Family Medicine, 9e - Table 21-5 Primitive Neurologic Reflexes
  • Kaplan and Sadock's Synopsis of Psychiatry - Developmental Milestones in Infants, p. 2756
  • Localization in Clinical Neurology, 8e - Sucking, Snout, Rooting Reflexes

What is grasp reflex in short

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Grasp Reflex (Short Answer)

Definition

A primitive reflex where pressing or stroking the palm or sole of a newborn causes the fingers or toes to curl and grip around the examiner's finger.

Two Types

TypeStimulusResponse
Palmar graspPress against the palm (between thumb and index finger)Fingers curl and grip tightly
Plantar graspPress against the soleToes curl downward

How to Elicit

Stroke the palm lightly with a forward motion - the infant's fingers hook around the examiner's hand. When tension is applied to the flexed fingers, the infant cannot voluntarily release the grip (this is called the "forced grasping reflex").

Age

  • Present: From birth
  • Disappears: 3-4 months of age (palmar); plantar grasp persists slightly longer

Clinical Significance

  1. In newborns: A normal primitive reflex confirming intact neurological function. Its presence at birth and disappearance by 4 months follows normal cortical maturation.
  2. Persistence beyond 4 months: Suggests delayed cortical maturation or neurological damage (e.g., cerebral palsy).
  3. Re-emergence in adults (frontal release sign): Reappearance of the grasp reflex in adults indicates damage to the contralateral frontal lobe - specifically area 6 (premotor cortex) on the mesial hemisphere. It is seen in frontal lobe lesions, bilateral prefrontal impairment, and conditions like frontotemporal dementia. It reflects loss of cortical inhibition over primitive brainstem circuits.
Per Localization in Clinical Neurology: "Damage to the contralateral area 6, particularly in the mesial aspect of the hemisphere, accounts for the release of the grasp reflex."
  • Localization in Clinical Neurology, 8e - Grasp Reflex section
  • Textbook of Family Medicine, 9e - Table 21-5 Primitive Neurologic Reflexes
  • Kaplan and Sadock's Synopsis of Psychiatry - Developmental Milestones in Infants

Moro reflex

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Moro reflex startle reflex newborn infant arms abduct

Clinical photograph illustrating the assessment of the Moro reflex in a preschool-aged child. The image depicts a therapist supporting the child's upper torso and head while the child is leaned backward. The child's head is in a position of cervical extension (tilted back) with eyes closed, which is a provocative maneuver to stimulate the vestibular system and trigger the reflex. The upper limbs are observed in a state of abduction or 'throwing out' to the sides, while the lower limbs show knee flexion. This clinical examination is used in pediatric neurology and physiotherapy to assess the integration of primitive reflexes. Persistent, unintegrated Moro reflexes beyond early infancy can indicate developmental delays or neurological maturity issues. The image demonstrates the standard physical therapy test position used to evaluate for residual reflex activity in older children, where compensatory movements like arm flailing or loss of balance are monitored.

Clinical photograph illustrating the assessment of the Moro reflex in a preschool-aged child. The image depicts a therapist supporting the child's upper torso and head while the child is leaned backward. The child's head is in a position of cervical extension (tilted back) with eyes closed, which is a provocative maneuver to stimulate the vestibular system and trigger the reflex. The upper limbs are observed in a state of abduction or 'throwing out' to the sides, while the lower limbs show knee flexion. This clinical examination is used in pediatric neurology and physiotherapy to assess the integration of primitive reflexes. Persistent, unintegrated Moro reflexes beyond early infancy can indicate developmental delays or neurological maturity issues. The image demonstrates the standard physical therapy test position used to evaluate for residual reflex activity in older children, where compensatory movements like arm flailing or loss of balance are monitored.

This clinical photograph shows a newborn infant in a supine position, representing standard neonatal care and attire within a maternity ward setting. The infant is dressed in a light-colored, long-sleeved cotton shirt and matching leggings. The shirt is designed with a side-tie closure, currently open at the abdomen to allow for clinical observation or umbilical cord care. The infant appears in a relaxed, sleeping state with closed eyes and arms flexed toward the head, indicating normal neurological tone and comfort. The infant is placed on a flat, padded surface covered with a protective sheet, typical of a nursery changing station or bassinet. A plush toy is visible near the feet. This image serves to illustrate traditional postpartum care practices and the use of loose-fitting infant apparel as an alternative to swaddling in clinical research focused on early infant development and breastfeeding outcomes.

This clinical photograph shows a newborn infant in a supine position, representing standard neonatal care and attire within a maternity ward setting. The infant is dressed in a light-colored, long-sleeved cotton shirt and matching leggings. The shirt is designed with a side-tie closure, currently open at the abdomen to allow for clinical observation or umbilical cord care. The infant appears in a relaxed, sleeping state with closed eyes and arms flexed toward the head, indicating normal neurological tone and comfort. The infant is placed on a flat, padded surface covered with a protective sheet, typical of a nursery changing station or bassinet. A plush toy is visible near the feet. This image serves to illustrate traditional postpartum care practices and the use of loose-fitting infant apparel as an alternative to swaddling in clinical research focused on early infant development and breastfeeding outcomes.

Clinical photograph of a mother holding a newborn infant in a domestic or field setting, representative of maternal and child health studies in South Asian regions like Dhaka, Bangladesh. The mother is shown in a three-quarter view, wearing traditional attire including a green blouse and a floral-patterned shawl. The newborn is positioned in the mother's arms in a resting, supine-to-sidelying posture. The infant has light brown skin, visible scalp hair, and appears stable with no immediate signs of acute respiratory distress or visible cutaneous lesions. From an educational perspective, this image illustrates neonatal care, the postpartum period, and the socio-economic determinants of health in developing urban environments. It serves as a visual reference for community health outreach, breastfeeding support, and pediatric assessment in global health contexts.

Clinical photograph of a mother holding a newborn infant in a domestic or field setting, representative of maternal and child health studies in South Asian regions like Dhaka, Bangladesh. The mother is shown in a three-quarter view, wearing traditional attire including a green blouse and a floral-patterned shawl. The newborn is positioned in the mother's arms in a resting, supine-to-sidelying posture. The infant has light brown skin, visible scalp hair, and appears stable with no immediate signs of acute respiratory distress or visible cutaneous lesions. From an educational perspective, this image illustrates neonatal care, the postpartum period, and the socio-economic determinants of health in developing urban environments. It serves as a visual reference for community health outreach, breastfeeding support, and pediatric assessment in global health contexts.

This clinical photograph displays a newborn infant in a resting state within a Neonatal Intensive Care Unit (NICU) setting. The infant is shown in a lateral profile, featuring a fair skin tone and dark, fine terminal hair. A primary visual focus is a yellow, oval-shaped noise-reduction earmuff applied over the external ear. This device is utilized as a non-pharmacological intervention aimed at neuroprotection and developmental care by mitigating high decibel levels in the NICU environment. Such interventions are clinically relevant for reducing stress-induced motor responses, such as tremors and startle reflexes, and for supporting physiological stability and weight gain in neonates. The image demonstrates the practical application of environmental modification protocols designed to protect fragile auditory systems and promote neurodevelopmental maturation in early infancy.

This clinical photograph displays a newborn infant in a resting state within a Neonatal Intensive Care Unit (NICU) setting. The infant is shown in a lateral profile, featuring a fair skin tone and dark, fine terminal hair. A primary visual focus is a yellow, oval-shaped noise-reduction earmuff applied over the external ear. This device is utilized as a non-pharmacological intervention aimed at neuroprotection and developmental care by mitigating high decibel levels in the NICU environment. Such interventions are clinically relevant for reducing stress-induced motor responses, such as tremors and startle reflexes, and for supporting physiological stability and weight gain in neonates. The image demonstrates the practical application of environmental modification protocols designed to protect fragile auditory systems and promote neurodevelopmental maturation in early infancy.

Two-panel clinical photograph (A and B) demonstrating a medical procedure in a neonatal setting. The images show a newborn infant placed in a lateral decubitus position on a clinical examination surface for torso shape measurement. An electronic measuring belt—constructed from a flexible, transparent material with integrated, equidistantly spaced dark sensors—is wrapped circumferentially around the infant’s chest. In panel A, the infant's arms are positioned upwards and away from the body, leaving the chest wall relatively uncompressed. In panel B, the arms are positioned downward against the chest, resting between the mattress and the torso, which visibly compresses and alters the cross-sectional shape of the rib cage. A clinician’s hands are visible, stabilizing the infant’s position and securing the sensor belt for data acquisition. The visual content serves to demonstrate the biomechanical impact of posture and limb position on the compliance and deformation of the neonatal chest wall, relevant for respiratory and anthropometric research in pediatrics and neonatology.

Two-panel clinical photograph (A and B) demonstrating a medical procedure in a neonatal setting. The images show a newborn infant placed in a lateral decubitus position on a clinical examination surface for torso shape measurement. An electronic measuring belt—constructed from a flexible, transparent material with integrated, equidistantly spaced dark sensors—is wrapped circumferentially around the infant’s chest. In panel A, the infant's arms are positioned upwards and away from the body, leaving the chest wall relatively uncompressed. In panel B, the arms are positioned downward against the chest, resting between the mattress and the torso, which visibly compresses and alters the cross-sectional shape of the rib cage. A clinician’s hands are visible, stabilizing the infant’s position and securing the sensor belt for data acquisition. The visual content serves to demonstrate the biomechanical impact of posture and limb position on the compliance and deformation of the neonatal chest wall, relevant for respiratory and anthropometric research in pediatrics and neonatology.

Clinical photograph of a late preterm newborn infant following delivery. The image shows a macrosomic infant (birth weight 3.9 kg) with a prominent reddish hue (plethora) visible on the face, arms, and hands. The infant has dark, thick, curly scalp hair and is shown in a supine position with hands clenched. The facial profile does not exhibit overt dysmorphic features. The clinical context involves an infant of a diabetic mother (IDM), born via cesarean delivery, who subsequently developed complications including respiratory distress, hypocalcemia, and hypoglycemia. This visual serves as an educational example of a newborn affected by gestational diabetes, illustrating the physical appearance of macrosomia and cutaneous plethora without specific congenital anomalies or dysmorphic features.

Clinical photograph of a late preterm newborn infant following delivery. The image shows a macrosomic infant (birth weight 3.9 kg) with a prominent reddish hue (plethora) visible on the face, arms, and hands. The infant has dark, thick, curly scalp hair and is shown in a supine position with hands clenched. The facial profile does not exhibit overt dysmorphic features. The clinical context involves an infant of a diabetic mother (IDM), born via cesarean delivery, who subsequently developed complications including respiratory distress, hypocalcemia, and hypoglycemia. This visual serves as an educational example of a newborn affected by gestational diabetes, illustrating the physical appearance of macrosomia and cutaneous plethora without specific congenital anomalies or dysmorphic features.

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Moro Reflex (Startle Reflex)

Moro reflex - the head is allowed to fall backward, arms abduct and extend with fingers spread open
Moro reflex: head drops backward, arms abduct and extend with fingers spread - from Kaplan & Sadock's Synopsis of Psychiatry

Definition

The Moro reflex (also called the startle reflex) is a primitive neonatal reflex triggered by a sudden change in head position or unexpected stimulus. It is characterized by bilateral arm abduction and extension with finger spreading, followed by arm adduction (flexion back toward the body) - resembling an embracing movement.

How to Elicit

Classic method: Hold the newborn in a supine position and abruptly lower the body (allow the head to drop backward suddenly).
Other triggers: Loud noise, sudden bright light, or any unexpected stimulus.
Response (3 phases):
  1. Phase 1 - Abduction/Extension: Both arms abduct and extend outward; fingers splay open (digital extension)
  2. Phase 2 - Adduction: Arms come back together in a hugging/embracing motion; fists close
  3. Cry often follows

Age

Present fromBirth (even in premature infants)
Disappears4-6 months of age

Clinical Significance

1. Normal neonatal assessment

Presence of a symmetric, complete Moro reflex at birth confirms intact neurological function. It is one of the key primitive reflexes checked in every newborn exam.

2. Asymmetric Moro reflex

One-sided absence or weakness suggests:
  • Brachial plexus injury (Erb's palsy - C5/C6; Klumpke's palsy - C7/C8/T1) - the affected arm will not abduct/extend properly
  • Fractured clavicle (pain inhibits response on that side)
  • Hemiplegia

3. Absent Moro reflex

  • Severe birth asphyxia / hypoxic-ischemic encephalopathy
  • Severe neurological depression
  • Kernicterus (high bilirubin) - associated with shrill cry, decreased tone, and decreased Moro reflex

4. Weak Moro reflex

  • Seen in neonatal myasthenia gravis - signs include poor cry, respiratory difficulties, weak suckling, and feeble Moro reflex

5. Persistent Moro reflex beyond 6 months

A persistent Moro reflex is a poor prognostic sign for walking in cerebral palsy. Per Campbell's Operative Orthopaedics, Bleck's poor prognostic signs for ambulation include:
  1. Imposable asymmetric tonic neck reflex
  2. Persistent Moro reflex
  3. Strong extensor thrust on vertical suspension
  4. Persistent neck-righting reflex
  5. Absence of parachute reaction after 11 months

Summary Table

FeatureDetail
Also calledStartle reflex
StimulusSudden head drop, loud noise, unexpected stimulus
ResponseArms abduct + extend + fingers spread → then adduct back
PresentBirth to 4-6 months
Absent at birthSevere neurological depression, birth asphyxia
AsymmetricBrachial plexus injury, clavicle fracture
Persists beyond 6 monthsCerebral palsy, severe brain damage
  • Kaplan and Sadock's Synopsis of Psychiatry - Developmental Milestones in Infants (Fig. 32-6)
  • Campbell's Operative Orthopaedics, 15e - Diagnosis of Cerebral Palsy
  • Textbook of Family Medicine, 9e - Table 21-5 Primitive Neurologic Reflexes

Babinski reflex in short

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Babinski Reflex (Short)

Definition

The Babinski reflex (also called the plantar reflex) is elicited by stroking the lateral sole of the foot from heel toward the little toe. The response is assessed by watching the direction the big toe moves.

How to Elicit

  • Use a blunt instrument (e.g., key or tongue depressor)
  • Stroke the lateral (outer) plantar surface of the foot from the heel upward toward the little toe, then medially across the ball of the foot
  • Apply mild, not forceful, pressure

Responses

ResponseBig Toe MovementMeaning
Normal (adult)Plantar flexion (curls downward)Normal corticospinal tract
Positive Babinski signDorsiflexion (extends upward) + fanning of other toesUMN (corticospinal) damage
Normal (infant <12 months)Extension (upward)Normal - corticospinal tracts not yet myelinated

Age in Children

  • Normal in infants up to 12 months (some say up to 2 years) - upward toe extension is the expected response because the corticospinal tracts are not yet fully myelinated
  • Disappears as myelination completes and the Babinski response becomes plantar flexion (downward)

Clinical Significance in Adults

A positive Babinski sign in adults is a reliable marker of corticospinal (upper motor neuron) tract damage. It is one of the classic signs of UMN lesions, along with:
  • Spasticity (increased tone)
  • Hyperreflexia
  • Weakness
  • Loss of abdominal reflexes
Common causes: stroke, spinal cord injury, multiple sclerosis, motor neuron disease, brain tumors.

Alternative Tests (Same Significance as Babinski)

When withdrawal responses interfere, alternatives include:
  • Chaddock sign - stroke lateral foot below lateral malleolus
  • Oppenheim sign - scrape down the shin
  • Gordon sign - squeeze the calf
  • Triple flexion reflex - pathological spinal reflex (flexion of knee, hip, and dorsiflexion of foot) - same significance as Babinski

"The plantar reflexes, particularly the elicitation of the Babinski sign by stroking the lateral sole of the foot from heel to toe, are an essential part of most examinations. The sign is a dependable marker of damage to the corticospinal system." - Adams and Victor's Principles of Neurology, 12e
  • Adams and Victor's Principles of Neurology, 12e - Testing of Reflexes
  • Tintinalli's Emergency Medicine - BASIC Neurological Examination
  • Kaplan and Sadock's Synopsis of Psychiatry - Developmental Milestones in Infants

Doll's eye reflex in short

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Doll's Eye Reflex (Short)

Definition

The doll's eye reflex (also called the oculocephalic reflex or vestibulo-ocular reflex) is a brainstem reflex tested in unconscious/comatose patients by rotating the head and observing compensatory eye movements.

How to Elicit

  • Prerequisite: First rule out cervical spine injury before performing
  • Hold the patient's eyes open
  • Rotate the head rapidly from side to side (horizontal) or up and down (vertical)
  • Observe the direction of eye movement

Responses

ResponseEye MovementInterpretation
Doll's eyes PRESENT (positive)Eyes move opposite to head rotation (like a doll's fixed eyes)Brainstem intact - VOR pathways functioning
Doll's eyes ABSENT (negative)Eyes move with the head, or no movementBrainstem dysfunction - midbrain/pons damage
Normal awake patientDoll's eyes NOT presentVisual fixation and voluntary eye movements suppress the reflex - absence is NORMAL in awake patients

Key Rule

"Note that in awake patients, doll's eyes are usually not present. This is because visual fixation and voluntary eye movements mask the reflex. Thus, the absence of doll's eyes suggests brainstem dysfunction in the comatose patient but can be normal in the awake patient."
  • Neuroanatomy through Clinical Cases, 3e

Neural Pathway

The reflex depends on the integrity of:
  • CN VIII (vestibular input - afferent)
  • Brainstem pathways from medulla → pons → midbrain
  • CN III, IV, VI (ocular motor - efferent)
  • Interconnecting MLF (medial longitudinal fasciculus)

Clinical Significance

SituationDoll's EyesMeaning
Coma with intact brainstemPresentMetabolic/hemispheric cause of coma
Coma with brainstem damageAbsentStructural brainstem lesion
Brain deathAbsentBrainstem non-functional
Drug overdoseMay be absentMimic of brainstem damage - but pupils remain reactive
Important distinction: In drug-induced coma, doll's eyes may be absent but pupils remain normal size and reactive to light - this distinguishes drug overdose from structural brainstem damage.

More Potent Alternative: Caloric (Cold Water) Test

If doll's eyes are absent, caloric testing provides a stronger stimulus:
  • Irrigate external auditory canal with cold water (head at 30°)
  • Normal response in coma: tonic eye deviation toward cold water side
  • Mnemonic: COWS - Cold water = eyes deviate to the Opposite side for fast phase (warm = Same side)
  • In coma, the fast phase (nystagmus) is often absent; only slow tonic deviation remains

  • Harrison's Principles of Internal Medicine, 22e - Brainstem Reflexes
  • Neuroanatomy through Clinical Cases, 3e - Cranial Nerves / Vestibulo-ocular reflex
  • Bradley and Daroff's Neurology in Clinical Practice - Ocular Motility
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