APA 2120 Lecture Notes - Lecture 3: Chronometry, Stimulus Modality, Direct Current
4 Apr 2016
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Document Summary
Decision making for movement (time input to output- action performed) Reaction (rt) time: main measure of the duration of information. Reaction time sprinters reaction to gun iring (what is happened in the brain and the muscles during that short time: measurement: mental chronometry. Mental chronometry is the use of response time in perceptual-motor tasks to infer the content, duration, and temporal sequencing of cognitive operations. Studied using the measuring of reaction time (rt) Reaction time: is the elapsed time between the presentation of a sensory stimulus and the subsequent behavioural response: how fast the thinker can execute the mental operations needed by the task at hand. In turn, speed of processing is considered an index of processing eiciency. The behavioural response is typically a button press but can also be an eye movement, a vocal response, or some other observable behaviour. Some movements are relexes rather than reaction.
