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The Remapping of Time by Active Tool-Use.

Anelli F, Candini M, Cappelletti M, Oliveri M, Frassinetti F - PLoS ONE (2015)

Bottom Line: The remapping was not found when a passive tool-training was executed (Experiment 2) or when the active tool-training was performed with participants' left hand (Experiment 3).Taken together, our findings reveal that time processing is based on action-driven multiple representations.The dynamic nature of these representations is demonstrated by the remapping of time, which is action- and effector-dependent.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, University of Bologna, Bologna, Italy.

ABSTRACT
Multiple, action-based space representations are each based on the extent to which action is possible toward a specific sector of space, such as near/reachable and far/unreachable. Studies on tool-use revealed how the boundaries between these representations are dynamic. Space is not only multidimensional and dynamic, but it is also known for interacting with other dimensions of magnitude, such as time. However, whether time operates on similar action-driven multiple representations and whether it can be modulated by tool-use is yet unknown. To address these issues, healthy participants performed a time bisection task in two spatial positions (near and far space) before and after an active tool-use training, which consisted of performing goal-directed actions holding a tool with their right hand (Experiment 1). Before training, perceived stimuli duration was influenced by their spatial position defined by action. Hence, a dissociation emerged between near/reachable and far/unreachable space. Strikingly, this dissociation disappeared after the active tool-use training since temporal stimuli were now perceived as nearer. The remapping was not found when a passive tool-training was executed (Experiment 2) or when the active tool-training was performed with participants' left hand (Experiment 3). Moreover, no time remapping was observed following an equivalent active hand-training but without a tool (Experiment 4). Taken together, our findings reveal that time processing is based on action-driven multiple representations. The dynamic nature of these representations is demonstrated by the remapping of time, which is action- and effector-dependent.

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Related in: MedlinePlus

Stimuli used in the temporal bisection task.(a) Temporal structure of a representative trial. (b) Stimuli dimension depicted according to near and far space.
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pone.0146175.g001: Stimuli used in the temporal bisection task.(a) Temporal structure of a representative trial. (b) Stimuli dimension depicted according to near and far space.

Mentions: The experiment consisted of two phases. In the time encoding phase, a blue square was displayed on a black background for one of the following durations: 1600, 1800, 2000, 2200 or 2400 ms. In the time bisection phase, following a 500 ms-ISI a red square appeared on the monitor in the same position of the blue one; participants reproduced with a button press half of the duration of the blue square (Fig 1). No feedback was given. Inter-trial timing was fixed at 2000 ms.


The Remapping of Time by Active Tool-Use.

Anelli F, Candini M, Cappelletti M, Oliveri M, Frassinetti F - PLoS ONE (2015)

Stimuli used in the temporal bisection task.(a) Temporal structure of a representative trial. (b) Stimuli dimension depicted according to near and far space.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4696728&req=5

pone.0146175.g001: Stimuli used in the temporal bisection task.(a) Temporal structure of a representative trial. (b) Stimuli dimension depicted according to near and far space.
Mentions: The experiment consisted of two phases. In the time encoding phase, a blue square was displayed on a black background for one of the following durations: 1600, 1800, 2000, 2200 or 2400 ms. In the time bisection phase, following a 500 ms-ISI a red square appeared on the monitor in the same position of the blue one; participants reproduced with a button press half of the duration of the blue square (Fig 1). No feedback was given. Inter-trial timing was fixed at 2000 ms.

Bottom Line: The remapping was not found when a passive tool-training was executed (Experiment 2) or when the active tool-training was performed with participants' left hand (Experiment 3).Taken together, our findings reveal that time processing is based on action-driven multiple representations.The dynamic nature of these representations is demonstrated by the remapping of time, which is action- and effector-dependent.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, University of Bologna, Bologna, Italy.

ABSTRACT
Multiple, action-based space representations are each based on the extent to which action is possible toward a specific sector of space, such as near/reachable and far/unreachable. Studies on tool-use revealed how the boundaries between these representations are dynamic. Space is not only multidimensional and dynamic, but it is also known for interacting with other dimensions of magnitude, such as time. However, whether time operates on similar action-driven multiple representations and whether it can be modulated by tool-use is yet unknown. To address these issues, healthy participants performed a time bisection task in two spatial positions (near and far space) before and after an active tool-use training, which consisted of performing goal-directed actions holding a tool with their right hand (Experiment 1). Before training, perceived stimuli duration was influenced by their spatial position defined by action. Hence, a dissociation emerged between near/reachable and far/unreachable space. Strikingly, this dissociation disappeared after the active tool-use training since temporal stimuli were now perceived as nearer. The remapping was not found when a passive tool-training was executed (Experiment 2) or when the active tool-training was performed with participants' left hand (Experiment 3). Moreover, no time remapping was observed following an equivalent active hand-training but without a tool (Experiment 4). Taken together, our findings reveal that time processing is based on action-driven multiple representations. The dynamic nature of these representations is demonstrated by the remapping of time, which is action- and effector-dependent.

Show MeSH
Related in: MedlinePlus