PSY100H1 Lecture Notes - Lecture 5: Outline Of Object Recognition, Depth Perception, Plywood
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PSY100H1 Full Course Notes
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Document Summary
Necessary skills for visually-guided reaching: perceptual skills. Fine-motor coordination and control: visual-motor integration and coordination. Timing of the grasp: these skills are developed by the first year of life, neonate. Tom bower suggested that if you put infant and support infant in suitable conditions, after just a few days, infant will grasp objects. Von hosten looked at nature of how infants move their arms when there was an object vs. when there was no object. Normative sequence of reaching: 1-2 months. Begin to fixate objects for 5-10 sec. Grasping if an object is pressed against palm: 2-3 months. They get their arms out there and make a swipe at it (may make contact w/ object, but haven"t mastered timing of grasping yet) Raise hand towards object: 3-4 months. Sometimes turn torso towards object: 4-5 months. Von hosten"s experiment at touches and misses and grasps of a slow and fast object. Infants don"t really miss objects; they touch or grasp.
