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									Infant Perception
Perception

   Any process by which we gain immediate
    awareness of what is happening outside
    ourselves
We develop perception through our
senses

   Visual
   Auditory
   Olfactory
   Gustatory
   Tactual
   kinesthetic
Eyes at Birth

   Fovea incompletely developed and ocular
    muscles are immature (poor focus and
    fixation/coordination of eye movements)
   Blinking and lacrimal apparatuses poorly
    developed at birth and unable to shed tears
   Debate on color blindness
Development of Eye Function

   Visual Accuity is the ability to see detail, as
    the eye matures, totally from 6 to 12 months
   Accommodation is the ability of each eye to
    vary its curvature to bring an object into focus
   Peripheral Vision is the visual field that can
    be seen without a change in fixation of the
    eyes (infant 30 degrees, adult 90 degrees)
Development of Eye Function, cont.

   Binocularity requires the eyes work together in
    visually attending to a stationary object which is
    fixation or to a moving object which is tracking
   Bifoveal fixation is the ability of both eyes to be
    aligned and directed at the same time and at the
    same object
   Fusion is the process in which the images on the two
    retinas are combined into a single visual percept
   Stereopsis allows is to detect depth
Development of Eye Function, cont.

   Binocular Tracking is the most basic aspect
    of visual-motor pursuit
   Saccades are quick movements of the eyes
    when trying to redirection of focus when
    learning to first track and object or objects
   Smooth pursuits are the ability to smoothly
    follow (track) and object which begins to
    develop at approximately 6 weeks
Development of Eye Function, cont.

   Perception of depth involves the ability to
    judge the distance of an object from oneself
   Static depth perception is the ability to
    perceive stationary objects
   Dynamic depth perception is the ability to
    perceive relationships with moving objects
Development of Eye Function, cont.

   Debate over color perception has to do with
    how much rhodopsin and iodopsin is present
    in rods and cones of the retina, may be
    identical to adults
   Form perception much debated, may begin
    at 2 months
   At 2 months prefer mothers face by 6 months
    like change in patterns
Auditory Perception

   Structure of ear is mature at birth, able to
    hear as soon as the amniotic fluid drains
   Fetus responds to sound, but may be to the
    vibrations of
   During first 6 months developing sensitivity to
    pitch
   Enjoys parents voice by the fifth month
Olfactory and Gustatory Perception

   Little research in this area
   Two very intertwined
   Newborn reacts to pungent odors
   Infants as young as 32 hours were able to
    discriminate between 2 odors, may take 2
    weeks to discriminate mothers smell
   Newborns prefer sweet to sour and sour to
    bitter

								
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