Adaptive tuning of perceptual timing to whole body motion.

Details

Serval ID
serval:BIB_E1AD71D8F1D4
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Adaptive tuning of perceptual timing to whole body motion.
Journal
Neuropsychologia
Author(s)
Binetti N., Siegler I.A., Bueti D., Doricchi F.
ISSN
1873-3514 (Electronic)
ISSN-L
0028-3932
Publication state
Published
Issued date
2013
Volume
51
Number
2
Pages
197-210
Language
english
Notes
Publication types: Journal ArticlePublication Status: ppublish
Abstract
In a previous work we have shown that sinusoidal whole-body rotations producing continuous vestibular stimulation, affected the timing of motor responses as assessed with a paced finger tapping (PFT) task (Binetti et al. (2010). Neuropsychologia, 48(6), 1842-1852). Here, in two new psychophysical experiments, one purely perceptual and one with both sensory and motor components, we explored the relationship between body motion/vestibular stimulation and perceived timing of acoustic events. In experiment 1, participants were required to discriminate sequences of acoustic tones endowed with different degrees of acceleration or deceleration. In this experiment we found that a tone sequence presented during acceleratory whole-body rotations required a progressive increase in rate in order to be considered temporally regular, consistent with the idea of an increase in "clock" frequency and of an overestimation of time. In experiment 2 participants produced self-paced taps, which entailed an acoustic feedback. We found that tapping frequency in this task was affected by periodic motion by means of anticipatory and congruent (in-phase) fluctuations irrespective of the self-generated sensory feedback. On the other hand, synchronizing taps to an external rhythm determined a completely opposite modulation (delayed/counter-phase). Overall this study shows that body displacements "remap" our metric of time, affecting not only motor output but also sensory input.
Pubmed
Web of science
Create date
12/04/2013 18:00
Last modification date
20/08/2019 16:05
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