PSY 654 Chapter Notes - Chapter 3: Premotor Cortex, Speech Segmentation, Visual Cortex
10 Sep 2014
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Document Summary
Perception: experiences resulting from stimulation of the senses. Purpose of the perceptual system is to provide accurate information about what is out there in the environment, which is important for survival. Perceptions can change based on added information, and can involve similar processes to reasoning and problem solving. Perception involves a reasoning process, however it occurs so rapidly and effortlessly it appears to be automatic. It involves dynamic processes that accompany and support our actions. First step in perception is the stimulation of receptors by stimuli from environment. Bottom-up processing processing that begins with the stimulation of receptors. Feature detectors receptors that respond to specific features and orientations. Behaviorally: recognition-by-components theory (irving biederman): we perceive objects by perceiving elementary features called geons. Geons: perceptual building blocks that can be combined to create objects. We can recognize an object if we are able to perceived just a few of its geons, even if the geons were obscured.
