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Canada (161,709)
Psychology (9,695)
PSYA01H3 (1,206)
Steve Joordens (1,058)
Chapter 6

PSYA01 chapter 6 notes

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Steve Joordens

Chapter 6 Perception Perception rapid, automatic, unconscious process by which we recognize what is represented by the information provided by our sense organs; not deliberateeffortful Sense organ provide information to guide behavior Brain Mechanisms of Visual Perception Often described as hierarchy of information processing Circuits o neurons analyze particular aspects of visual information and send the results of their analysis to another circuit Each step = more complex processing Higher levels of perceptual process interact with memories o Person recognizes familiar objects and learns the appearance of new, unfamiliar ones Primary Visual Cortex David Hubel and Torsten Wiesel inserted microelectrodes into various regions of the visual system of cats and monkeys to detect action potentials o Moved around stimulus on screen until they found a part where it had the largest effect on electrical activity o Conclusion: geography of the visual field is retained in the primary cortex Surface of retina is mapped on surface of cortex Module block of cortical tissue that receives information from the same group of receptor cells Cortex contains around 2500 modules Each module receives information from a small region of one retina o Receives information from a small region of the visual field (scene projected on retina) Receptive field portion of the visual field in which the presentation of visual stimuli will produce an alternation in the firing rate of a particular neuron o i.e. Circuits can detect presence, width, movement and direction of lines www.notesolution.com
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