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Temporal Predictions in Space: Isochronous Rhythms Promote Forward Projections of the Body
Laura Ferreri1, Rémy Versace1, Camille Victor1
1Laboratoire d'Étude des Mécanismes Cognitifs, Université Lumière Lyon 2, Lyon, France.
Frontiers in Psychology
|May 23, 2022
Summary
Regular rhythmic auditory stimulation, specifically isochronous rhythms, enhances our ability to project ourselves forward in space. This temporal prediction is linked to our perception-action system, integrating time and space.
Area of Science:
- Cognitive Neuroscience
- Auditory Perception
- Spatial Cognition
Background:
- Rhythmic stimulation influences temporal anticipation and motor control.
- Temporal concepts are often mapped onto spatial dimensions (e.g., future-ahead).
- The effect of rhythmic stimulation on forward-body projections in peri-personal space is not well understood.
Purpose of the Study:
- To investigate if regular rhythmic stimulation promotes forward-body projections.
- To test the hypothesis that isochronous rhythms enhance future-oriented spatial perception.
Main Methods:
- Participants (N=24) performed a Visual Approach/Avoidance by the Self Task (VAAST).
- Auditory stimuli included isochronous and non-isochronous rhythms.
- Perceptual judgments on a visual scene (metronome) were made after rhythmic exposure.
- Response-triggered visual flow simulated forward or backward self-movement.
Main Results:
- A significant interaction was found between rhythmic stimulation type and movement projection direction (p < 0.001).
- Participants responded faster to forward-body projections after isochronous rhythms.
- This effect was not observed for backward-body projections or non-isochronous rhythms.
Conclusions:
- Isochronous rhythms are strongly linked to enhanced forward-body projections.
- Temporal predictions from rhythmic auditory stimuli are grounded in integrated perception-action systems.
- This study supports the integration of temporal and spatial information in perception and action.
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