Test Your Knowledge

Test Your Knowledge - Kelly Goins Test Your Knowledge...

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Kelly Goins Test Your Knowledge Chapter 10 1. During the first month of life, the visual system provides the infant with functionally useful but unrefined vision at a level approximately 5% of eventual adult acuity. A newborn can differentiate facial features from a distance of 20 inche; beyond this, they cannot see objects clearly. Around 6 months an infants visual system perceives adequate detail to assist them in the task. During childhood, vision improves (20/20). 2. By moving the head or moving through space, people receive depth cues from motion parallax. Objects in space change locations on our retinas, and nearer objects overlap more distant objects as the head moves. 3. Different aspects of objects are size constancy, shape constancy, habituation, face perception, and spatial orientation. Size constancy is the perception of actual object size despite the size of its image as projected on our retina. Shape constancy is the perception of actual object shape despite its orientation to a viewer. Habituation is the state of having adapted to a stimulus. Spatial orientation is the orientation or position of objects as they are located in space or in a two-dimensional drawing. 4. Many infantile reflexes are stimulated through kinesthetic receptors. Therefore the onset of a reflex indicated that the corresponding kinesthetic receptor is functioning. The first prenatal reflex that can be elicited is opposite-side neck flexion through tactile stimulation around the mouth at just 7.5 weeks after conception. At birth, infants respond clearly to touch. 5. Identification of body parts (lateral dominance, limb movements, directionality). These form throughout childhood. 6. A newborn’s hearing is imperfect partly because of the gelatinous tissue filling the inner ear. The absolute threshold is about 60 decibels higher for a newborn than for an adult. By 3 months, infants hear low-frequency sounds very well but do not hear high frequency sounds quite well. 7. Location: We locate a sound by determining its direction and distance
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This note was uploaded on 07/23/2010 for the course MOTOR DEV. 210 taught by Professor Smail during the Winter '09 term at CofC.

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Test Your Knowledge - Kelly Goins Test Your Knowledge...

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