PSYC 3440 Lecture Notes - Lecture 4: Almost Surely, Tabula Rasa, Visual Acuity
23 Mar 2016
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Document Summary
Lecture 4: placed babies in a looking chamber and presented them several visual simuli. Problem was laying down in the chamber caused the infants to fall asleep: if they spend more ime gazing at one patern more than another, it is assumed they can discriminate between them. Oten deined as when ixaion to the simulus is 50% of what it was iniially. If a new simulus is then presented, the infant may show a sudden increase in looking ime: referred to a dishabituaion. Indicates infant can discriminate between the 2 simuli. Also indicates that infants have formed a representaion and can remember the simulus. Newborn acuity ranges from 20/400 to 20/600 (can see at 20 feet what a normal adult sees at. Colour vision does not begin to appear unil about 8 weeks. Rod area is beter developed so infants can detect movement and gross paterns of low spaial frequency and high contrast.
