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The asynchronous discrete coding model: further tests with single-attribute stimuli
1University of Otago, Dunedin, New Zealand.
Perception & Psychophysics
|December 29, 1998
Summary
Partial stimulus size information influences response processes early on. This suggests the perceptual system sends incomplete attribute data to the response system, challenging existing models.
Area of Science:
- Cognitive Psychology
- Perception Science
- Human Response Dynamics
Background:
- Investigating the timing and nature of information transfer from sensory perception to motor response execution.
- Examining the role of stimulus attributes, such as size, in modulating response preparation.
- Challenging established models of perceptual-motor integration.
Purpose of the Study:
- To determine if partial stimulus information can affect response processes.
- To test the predictions of the asynchronous discrete coding model.
- To explore the mechanisms of selective response preparation.
Main Methods:
- Utilizing a probe-reaction time (RT) paradigm across two experiments.
- Manipulating the availability of partial stimulus size information.
- Analyzing the influence of partial information on response initiation.
Main Results:
- Partial stimulus size information was found to influence response processes.
- Response modulation occurred even before complete size information was available.
- Findings contradict the asynchronous discrete coding model's predictions.
Conclusions:
- The perceptual system can transmit partially specified stimulus attribute information to the response system.
- This challenges the notion that only fully specified information influences responses.
- Evidence suggests at least two distinct forms of selective response preparation exist.