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Recognition of dance-like actions: memory for static posture or dynamic movement?
Staci A Vicary1, Rachel A Robbins, Beatriz Calvo-Merino
1MARCS Institute, University of Western Sydney, Sydney, New South Wales, Australia, s.vicary@uws.edu.au.
Memory & Cognition
|February 21, 2014
Summary
Visual working memory (VWM) distinguishes between static body posture and dynamic body movement. Memory for movement is impaired by motion tasks, but not form tasks, indicating distinct VWM representations.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Dance-like actions are complex visual stimuli involving dynamic body movement and static body posture.
- Previous research shows distinct processing for dynamic movement versus static posture in perception.
- It remains unclear if this dissociation extends to visual working memory (VWM).
Purpose of the Study:
- To investigate whether body movement and body posture are differentially retained in VWM.
- To test if posture and movement are separable in VWM, analogous to form and motion items.
- To examine interference effects from intervening tasks on the recognition of body movement and posture.
Main Methods:
- Two experiments were conducted to examine VWM for body movement and posture.
- Experiment 1: Tested recognition of postures and movements with matched and mismatched study/test stimulus formats.
- Experiment 2: Compared recognition of postures and movements after intervening form and motion tasks.
Main Results:
- Recognition of movement based solely on posture was possible but significantly poorer than recognition of full movement.
- Form-based interference did not impair memory for movements.
- Motion-based interference significantly impaired memory for movements.
Conclusions:
- Static posture information is encoded during observation of dance-like actions.
- Body movement and body posture are distinct in visual working memory.
- These findings suggest separable representations for movement and posture within VWM.
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