PSY270H1 Lecture Notes - Lecture 3: Smooth Pursuit, Attentional Shift, Donald Broadbent
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Attention: early vs. late selection: why do we have selective attention, protects from overload i. e. asd patients have heightened sensory sensitivity. Short-term memory: late filter: sensory memory extraction of simple, physical properties extraction of all properties filter short-term memory. Attentional pre-cueing paradigm (posner: assesses an individual"s ability to perform an attentional shift. Task: while fixating on a central point in the screen, press a button when target light flashes. Results: valid trials had the fastest rt. Invalid trials had slowest rt compared to valid and neutral trials. Target on same vs. different object rt (egly, driver, rafal) Task: press button as soon as black square appears. There are three trial types: valid trial: target follows cue presented. Invalid trials: same object: target appears on same object but other side, different object: target appears on different object. Results: valid trial had fastest rt, rt was still fast for same object condition (same-object advantage, slow rt for different object condition.
