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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Keep away from danger: dangerous objects in dynamic and static situations.

Filomena Anelli1, Roberto Nicoletti, Roberto Bolzani

  • 1Department of Philosophy and Communication, University of Bologna , Bologna , Italy ; Department of Education Sciences, University of Bologna , Bologna , Italy.

Frontiers in Human Neuroscience
|July 13, 2013
PubMed
Summary
This summary is machine-generated.

Observing dangerous objects influences motor responses differently than neutral objects, especially in dynamic situations. Dangerous objects trigger avoidance, while neutral objects elicit action possibilities based on movement.

Keywords:
affordancesconceptual developmentdangerous objectsdynamic affordance effectdynamic and static presentationescaping/avoidance effectmotor systemspace

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Area of Science:

  • Cognitive Neuroscience
  • Motor Control
  • Perception

Background:

  • Object observation typically evokes action possibilities (affordances) and motor responses.
  • Dangerous objects can also modulate the motor system, eliciting aversive affordances.
  • Previous research primarily focused on pain, with limited exploration of dangerous object affordances.

Purpose of the Study:

  • To investigate how object dangerousness (neutral vs. dangerous) and presentation (static vs. dynamic) affect motor responses.
  • To examine the time-course of processing for dangerous objects.
  • To determine if object movement direction influences motor responses to dangerous and neutral objects.

Main Methods:

  • Three experiments manipulated object dangerousness, category, manual response type, and presentation (static/dynamic).
  • Experiment 1 used dynamic stimuli with movement toward or away from participants.
  • Experiments 2 and 3 used static stimuli and varied object size.

Main Results:

  • In static situations, neutral objects facilitated responses more than dangerous objects (affordance effect).
  • In dynamic situations, neutral objects showed a facilitation effect when moving toward participants.
  • Dangerous objects in dynamic situations elicited an escape-avoidance effect, processed faster when moving away.

Conclusions:

  • Object observation modulates motor responses, with distinct effects for neutral and dangerous items.
  • Dynamic affordance and escape-avoidance effects emerge based on object dangerousness and movement.
  • Motor responses are influenced by both static and dynamic properties of observed objects.