Kinesiology 1080A/B Chapter Notes - Chapter 1: Startle Response
23 Jan 2018
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Study purpose: study 1: effect of startle on task performance, study 2: effect of pre-pulse to startle and its influence on performance. Ase: startle (visual or auditory) causes speeded responses to a target stimulus (visual) Ppi: startle effect on proceeding target stimulus is modified by a pre-pulse stimulus presentation. Response inhibition: being able to select appropriate as opposed to inappropriate responses. Go/no-go tasks: response to certain stimuli while avoiding response to others. Covert error: emg activity above baseline but not at response level. Pre-pulse (only presented in study 2): 50ms low auditory noise. Emg from the eye blink and hand. Covert error: (premotor activity in no-go trial), emg activity greater than baseline that does not produce a button press. Response time decreased with startle presentation (ase) Startle magnitude decreased with pre-pulse presentation (ppi) Response time fastest in prepulse-startle go trials (ase) Note* even with the pre-pulse, the startle made the response time faster. Startle increases when accompanied by visual stimuli.
