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Published on: April 19, 2019
Does temporal preparation increase the rate of sensory information accumulation?
Verena C Seibold1, Karin M Bausenhart, Bettina Rolke
1Department of Psychology, University of Tübingen, Germany. verena.seibold@uni-tuebingen.de
Acta Psychologica
|March 29, 2011
Summary
Temporal preparation enhances perception by initiating sensory information accumulation earlier. This study clarifies that preparation affects the timing, not the speed, of information processing for improved performance.
Area of Science:
- Cognitive Neuroscience
- Perception Psychology
Background:
- Temporal preparation, the ability to anticipate stimuli, enhances perceptual processing.
- The precise neural mechanisms driving this perceptual benefit remain debated.
- Accumulation models propose preparation may alter information accumulation onset or rate.
Purpose of the Study:
- To investigate whether temporal preparation influences the onset or the rate of sensory information accumulation.
- To differentiate between these two potential mechanisms using decision criterion manipulations.
Main Methods:
- Three experiments were conducted manipulating participants' decision criteria.
- Decision criterion changes were implemented via catch trial and nogo trial proportions.
- Reaction time (RT) data were analyzed for interactions with criterion manipulation.
Main Results:
- Additive effects on RT were observed regardless of the decision criterion manipulation method.
- These additive effects indicate that temporal preparation does not interact with decision criterion changes.
- This pattern is inconsistent with changes in the information accumulation rate.
Conclusions:
- Temporal preparation enhances perceptual processing by advancing the onset of sensory information accumulation.
- The rate of sensory information accumulation is not affected by temporal preparation.
- Findings support models where preparation optimizes the timing of information processing stages.
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