PMID- 22742662 OWN - NLM STAT- MEDLINE DCOM- 20130319 LR - 20121010 IS - 1873-6297 (Electronic) IS - 0001-6918 (Linking) VI - 141 IP - 2 DP - 2012 Oct TI - Visuo-somatosensory reorganization in perceptual adaptation to reversed vision. PG - 231-42 LID - S0001-6918(12)00090-X [pii] LID - 10.1016/j.actpsy.2012.05.011 [doi] AB - Humans can adapt to reversal of the visual field after long-term wear of reversing prism spectacles. Among various aspects of adaptation to reversed vision, adjustment of visually-guided behavior has been consistently found. On the other hand, there is relatively little quantitative evidence for 'perceptual adaptation', for example, restoration of perceptual harmony between the visual and tactile world. To elucidate perceptual adaptation to reversed vision, we conducted long-term experiments with continuous wear of reversing spectacles. Four human adult participants wore left-right reversing spectacles for 37 or 32days. Perceptual adaptation was examined by spatial left-right judgment tasks for visual, auditory, and somatosensory stimuli. In the visuo-motor (VM) and somato-visual (SV) tasks, correct responses disappeared completely at the beginning of prism wearing, but gradually restored, first in the VM task, and subsequently in the SV task. Moreover, the VM and SV tasks revealed aftereffects (incorrect responses) upon removal of the reversing prisms after the long adaptation period. In the auditory-motor (AM) task, responses were mostly correct irrespective of the reversed vision, but incorrect responses transiently appeared approximately when the adaptive change was first observed in the SV task. Moreover, starting from the period when these changes in the SV and AM tasks emerged, an adaptive sign of interhemispheric interaction was revealed by functional Magnetic Resonance Imaging. These results indicate that perceptual adaptation to reversed vision does occur, and that it proceeds to visuo-somatosensory reorganization, which seems to transiently accompany global cross-modal interactions. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Sekiyama, Kaoru AU - Sekiyama K AD - Neuroscience Research Institute, National Institute of Advanced Industrial Science and Technology, 1497-1, Teragu Hakusan, Tsukuba, Japan. sekiyama@kumamoto-u.ac.jp FAU - Hashimoto, Kouki AU - Hashimoto K FAU - Sugita, Yoichi AU - Sugita Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120626 PL - Netherlands TA - Acta Psychol (Amst) JT - Acta psychologica JID - 0370366 SB - IM MH - Adaptation, Physiological/*physiology MH - Adult MH - Auditory Perception/physiology MH - Brain/*physiology MH - Female MH - Functional Laterality/physiology MH - Functional Neuroimaging MH - Humans MH - Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Photic Stimulation MH - Space Perception/*physiology MH - Touch Perception/*physiology MH - Visual Perception/*physiology EDAT- 2012/06/30 06:00 MHDA- 2013/03/21 06:00 CRDT- 2012/06/30 06:00 PHST- 2011/06/17 00:00 [received] PHST- 2012/03/08 00:00 [revised] PHST- 2012/05/30 00:00 [accepted] PHST- 2012/06/30 06:00 [entrez] PHST- 2012/06/30 06:00 [pubmed] PHST- 2013/03/21 06:00 [medline] AID - S0001-6918(12)00090-X [pii] AID - 10.1016/j.actpsy.2012.05.011 [doi] PST - ppublish SO - Acta Psychol (Amst). 2012 Oct;141(2):231-42. doi: 10.1016/j.actpsy.2012.05.011. Epub 2012 Jun 26.