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The Time Course of Response Activation with Dangerous Objects
1Baoji University of Arts and Sciences (China).
The Spanish Journal of Psychology
|July 31, 2018
Summary
Dangerous objects trigger automatic motor responses, influencing actions even when irrelevant. This study reveals these aversive affordances have a prolonged effect on response activation over time.
Area of Science:
- Cognitive Neuroscience
- Motor Control
- Perception-Action Coupling
Background:
- Object affordances, or action possibilities, are intrinsically linked to mental representations.
- Dangerous objects can elicit aversive affordances, modulating the motor system.
- The temporal dynamics of response activation by dangerous objects are not well understood.
Purpose of the Study:
- To investigate the time course of response activation generated by dangerous objects.
- To determine how long aversive affordances influence motor responses.
- To explore the temporal interplay between object perception and motor preparation.
Main Methods:
- Utilized a priming paradigm with varying stimulus-onset asynchrony (SOA).
- Participants performed a symbol judgment task after viewing a dangerous object prime.
- Measured congruency effects between object affordance and required response.
Main Results:
- A significant congruency effect was observed between object affordance and response at SOAs of 800 ms and 1,200 ms.
- This indicates that the motor system is influenced by the affordances of perceived objects.
- The effect suggests a delayed but significant impact of dangerous object affordances.
Conclusions:
- Response activation by dangerous objects exhibits a relatively long-lasting time course.
- Aversive affordances can exert a sustained influence on motor preparation and execution.
- Understanding these temporal dynamics is crucial for comprehending threat perception and avoidance behaviors.
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