PSYC 221 Lecture Notes - Lecture 3: George Sperling, University Of Manchester, Saccade
8 Mar 2016
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Document Summary
Sensation: the reception of stimulation from the environment and the initial encoding of that stimulation into the nervous system. Perception: the process of interpreting and understanding sensory information. Saccade: the quick movement of the eyes from one location to another. Saccades vary in duration (in part as a function of length) but often take about 25-100 msec. Fixation: the brief period when the eyes stop moving and press the visual scene. Fixations also vary in duration (e. g. , in reading) but typically last 200 msec or less. Introduced the concept of iconic memory as a sensory store. He replicated the standard perceptual span limitation of 4. 5 items, as long as the display was less than an eye fixation (10-200 msec) Permits brief display and rapid switch between displays. Whole report: trying to report everything that was presented (i. e. perceptual span) Partial report: trying to report only that portion of the display that is cued.
