Infant Reflexes
Infant Reflexes - Related Videos
20:06
The Comprehensive Infant Examination
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2023
Source: Heather Collette and Jaideep Talwalkar; Yale School of Medicine The newborn exam is important in establishing a baby's baseline health status as they enter the world. Newborn providers have the unique opportunity to evaluate a patient for the very first time. They are also tasked with identifying congenital anomalies that require early intervention to promote a long and healthy life for the child. Many newborn anomalies, such as heart defects, are noted on prenatal ultrasound. However,...
07:25
Habituation: Studying Infants Before They Can Talk
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2023
Source: Laboratories of Nicholaus Noles, Judith Danovitch, and Cara Cashon—University of Louisville Infants are one of the purest sources of information about human thinking and learning, because they’ve had very few life experiences. Thus, researchers are interested in gathering data from infants, but as participants in experimental research, they are a challenging group to study. Unlike older children and adults, young infants are unable to reliably speak, understand speech, or even move and...
09:18
Electrophysiological Measurements and Analysis of Nociception in Human Infants
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Cited by 21 •
2011
The assessment and treatment of pain in infants is difficult because infants cannot verbally report their experience. In this video we describe quantitative electrophysiological methods and analysis techniques that can be used to measure the response to noxious events from the infant nervous system.
12:55
P50 Sensory Gating in Infants
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Cited by 5 •
2013
Methods to record auditory P50 sensory gating, a physiological marker of cerebral inhibition which reflects early stages of attention, are described.
08:10
Using Your Head: Measuring Infants' Rational Imitation of Actions
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2023
Source: Laboratories of Judith Danovitch and Nicholaus Noles—University of Louisville One of the main challenges of infancy is to learn how to achieve one’s goals in the world, whether they are to pick up a toy or to express desires to another person, and one of the most powerful tools in this learning process is imitation. However, imitation is not always as simple as copying other people’s actions; it is also necessary to realize that goals and intentions guide behavior. The world is a...
FAQs
Each response is linked to a particular sensory trigger and a predictable motor pattern. Stimulation near the mouth can elicit sucking or turning toward the touch, while contact with the palm can produce grasping. This stimulus-response organization allows early behaviors to occur without requiring mature, deliberate motor control.
The brainstem and spinal pathways provide the functioning neural routes that organize these early responses, even while the infant's nervous system remains immature. Because these pathways support observable actions, clinicians can examine behavior as an accessible sign of nervous-system function. The response therefore links visible movement with underlying neurological development.
Gradual integration is important because reflexes are expected to change as early development proceeds. Assessment does not focus only on whether a response occurs; its strength and pattern of change also matter. A response that differs in appearance, intensity, or integration may signal a developmental difference and support a decision to seek further evaluation.
Observation typically starts by presenting or noting a relevant sensory condition, such as cheek touch, palm contact, mouth stimulation, or a sudden loss of support. The observer then documents the resulting behavior, including whether it appears and how strongly. This approach connects a specific trigger with neurological and developmental assessment.
Sucking, turning toward cheek contact, grasping, and extending the arms after lost support provide distinct behavioral observations. Each pattern shows how the infant responds to a different sensory condition, allowing attention to response-specific features rather than treating all reflex activity as identical. Their appearance, strength, and integration can help identify developmental differences.
In psychology, these responses connect early motor behavior with neurological development. Researchers and clinicians can observe how predictably a stimulus produces the expected action and how that action changes as infancy progresses. Such observations provide early indicators for studying nervous-system function, motor development, and developmental differences, making them relevant to research and assessment.