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Fore-period effect and stop-signal reaction time
Chiang-Shan Ray Li1, John H Krystal, Daniel H Mathalon
1Connecticut Mental Health Center, S103 Department of Psychiatry, Yale University, 34 Park Street, New Haven, 06519, USA. chiang-shan.li@yale.edu
Experimental Brain Research
|September 15, 2005
Summary
Response readiness, or how prepared you are to act, impacts your ability to stop an action. Higher readiness correlates with slower stop-signal reaction time (SSRT), affecting response inhibition.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Behavior
Background:
- The stop-signal task is a key paradigm for studying response inhibition.
- Understanding factors influencing response inhibition is crucial for various cognitive and clinical applications.
Purpose of the Study:
- To investigate the influence of response readiness on stop-signal reaction time (SSRT).
- To determine if the fore-period effect, a measure of response readiness, impacts the ability to inhibit a response.
Main Methods:
- Utilized a stop-signal task with a staircase procedure to adjust stop-signal delay.
- Calculated SSRT using a horse-race model.
- Quantified the fore-period effect to assess response readiness.
Main Results:
- A significant positive correlation was found between the fore-period effect and SSRT.
- This indicates that greater response readiness is associated with longer SSRTs.
Conclusions:
- Response prepotency, reflected by the fore-period effect, plays a significant role in stop-signal processing.
- Response readiness must be considered when evaluating response inhibition within the stop-signal task framework.