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Scientific article
English

Dynamic changes in brain activity during prism adaptation

Contributors

Luaute, Jacques; Schwartz, Sophie; Rossetti, Yves; Spiridon, Mona; Rode, Gilles; Boisson, Dominique; Vuilleumier, Patrik

Published in

The Journal of neuroscience, vol. 29, no. 1, p. 169-178

Publication date

2009

Abstract

Prism adaptation does not only induce short-term sensorimotor plasticity, but also longer-term reorganization in the neural representation of space. We used event-related fMRI to study dynamic changes in brain activity during both early and prolonged exposure to visual prisms. Participants performed a pointing task before, during, and after prism exposure. Measures of trial-by-trial pointing errors and corrections allowed parametric analyses of brain activity as a function of performance. We show that during the earliest phase of prism exposure, anterior intraparietal sulcus was primarily implicated in error detection, whereas parieto-occipital sulcus was implicated in error correction. Cerebellum activity showed progressive increases during prism exposure, in accordance with a key role for spatial realignment. This time course further suggests that the cerebellum might promote neural changes in superior temporal cortex, which was selectively activated during the later phase of prism exposure and could mediate the effects of prism adaptation on cognitive spatial representations.

Keywords

  • Adaptation, Physiological/ physiology
  • Adult
  • Brain/anatomy & histology/blood supply/ physiology
  • Brain Mapping
  • Female
  • Functional Laterality
  • Humans
  • Image Processing, Computer-Assisted/methods
  • Lenses
  • Magnetic Resonance Imaging/methods
  • Male
  • Nonlinear Dynamics
  • Oxygen/blood
  • Photic Stimulation/methods
  • Psychomotor Performance/physiology
  • Time Factors
  • Visual Perception/physiology
  • Young Adult

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

LUAUTE, Jacques et al. Dynamic changes in brain activity during prism adaptation. In: The Journal of neuroscience, 2009, vol. 29, n° 1, p. 169–178. doi: 10.1523/JNEUROSCI.3054-08.2009

Main files (1)

Article

Identifiers

Additional URL for this publication

http://www.jneurosci.org/cgi/reprint/29/1/169.pdf

Journal ISSN

0270-6474
717views
1downloads

Technical informations

Creation

06/08/2010 13:47:05

First validation

06/08/2010 13:47:05

Update

14/03/2023 15:58:53

Status update

14/03/2023 15:58:53

Last indexation

08/11/2024 11:11:52
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