The Development of Vision Rain Bosworth, Ph.D.

More documents

Recommendations

Info

II. Visual Psychophysics – HOW do we measurevisual perception in infants?Uh, I think thatwas on the left• Babies can’t respond verbally• We can’t confirm that even older children follow directionsMethods used to assess visual sensitivity ininfants:1) Directional Eye Movements – use optokineticeye movements to measure sensitivity2) Preferential Looking – use eye gaze and headturning to measure sensitivity3) Habituation – measure decline in looking timefor familiar stimulus and a novel stimulus4) Visual Evoked Potentials (VEP) - passiveviewing, measures cortical scalp electricalactivity
Methods used to assess visual sensitivity ininfants:2) Preferential Looking – use eye gaze and headturning to measure sensitivityWe will focus on this one.With an emphasis on how we measure “contrast sensitivity”First, explanation of the stimuli used…..Grating StimulusGratings are defined in modulation ofcontrast of luminance (dark vs. light) …Sine wave (or sinusoidal) gratingsCommonly used in vision studiesQUESTION: Why is it so important to use such a simple image?Why not present infants with richer images?
Page 2 and 3: Why study visual development?1) Cur
Page 4 and 5: I. Neural Overview:Primary Visual C
Page 6 and 7: Rough schematic of visual brain are
Page 10 and 11: Grating StimulusGratings are define
Page 12 and 13: And NOW, how do we measure visualse
Page 14 and 15: Grating StimulusSpatial Frequency -
Page 16 and 17: Example contrast sensitivity functi
Page 18 and 19: What limits infant vision?Eye devel
Page 20 and 21: Infant Photoreceptors in the EyeB)
Page 22 and 23: Development of Sensitivity forChrom
Page 24: Development of Sensitivity toMotion
Page 27: What can infants see? - StereopsisN

The Development of Vision Rain Bosworth, Ph.D.

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?