Short term light deprivation increases tactile spatial acuity in humans

被引:64
作者
Facchini, S
Aglioti, SM
机构
[1] Univ Roma La Sapienza, Dipartimento Psicol, I-00185 Rome, Italy
[2] Univ Verona, Dipartimento Sci Neurol Vis, Sezione Fisiol Umana, Rome, Italy
[3] Fdn St Lucia, Ctr Ric Neuropsicol, IRCCS, I-00185 Rome, Italy
关键词
D O I
10.1212/01.WNL.0000068026.15208.D0
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
The effect of short-term light deprivation on tactile spatial acuity was evaluated by asking 28 adult humans to perform a grating orientation task. The 14 subjects who were kept for 90 minutes in complete dark showed, immediately after deprivation, a reversible improvement of tactile spatial acuity. No acuity change was observed in the 14 nondeprived subjects. Results indicate that even a short-term visual deprivation may disclose highly dynamic plastic interactions between visual and tactile systems.
引用
收藏
页码:1998 / 1999
页数:2
相关论文
共 10 条
[1]   Enhanced excitability of the human visual cortex induced by short-term light deprivation [J].
Boroojerdi, B ;
Bushara, KO ;
Corwell, B ;
Immisch, I ;
Battaglia, F ;
Muellbacher, W ;
Cohen, LG .
CEREBRAL CORTEX, 2000, 10 (05) :529-534
[2]   Functional relevance of cross-modal plasticity in blind humans [J].
Cohen, LG ;
Celnik, P ;
PascualLeone, A ;
Corwell, B ;
Faiz, L ;
Dambrosia, J ;
Honda, M ;
Sadato, N ;
Gerloff, C ;
Catala, MD ;
Hallett, M .
NATURE, 1997, 389 (6647) :180-183
[3]   TACTILE SPATIAL-RESOLUTION .1. 2-POINT DISCRIMINATION, GAP DETECTION, GRATING RESOLUTION, AND LETTER RECOGNITION [J].
JOHNSON, KO ;
PHILLIPS, JR .
JOURNAL OF NEUROPHYSIOLOGY, 1981, 46 (06) :1177-1191
[4]   Braille character discrimination in blindfolded human subjects [J].
Kauffman, T ;
Théoret, H ;
Pascual-Leone, A .
NEUROREPORT, 2002, 13 (05) :571-574
[5]   Sensory modalities are not separate modalities: plasticity and interactions [J].
Shimojo, S ;
Shams, L .
CURRENT OPINION IN NEUROBIOLOGY, 2001, 11 (04) :505-509
[6]   ON THE FUNCTIONALITY OF THE VISUALLY DEPRIVED OCCIPITAL CORTEX IN EARLY BLIND PERSONS [J].
UHL, F ;
FRANZEN, P ;
LINDINGER, G ;
LANG, W ;
DEECKE, L .
NEUROSCIENCE LETTERS, 1991, 124 (02) :256-259
[7]  
Van Boven RW, 2000, NEUROLOGY, V54, P2230
[8]   SA1 and RA receptive fields, response variability, and population responses mapped with a probe array [J].
Vega-Bermudez, F ;
Johnson, KO .
JOURNAL OF NEUROPHYSIOLOGY, 1999, 81 (06) :2701-2710
[9]  
VONBOVEN RW, 1994, BRAIN 1, V117, P149
[10]   Enhanced tactile spatial acuity and cortical processing during acute hand deafferentation [J].
Werhahn, KJ ;
Mortensen, J ;
Van Boven, RW ;
Zeuner, KE ;
Cohen, LG .
NATURE NEUROSCIENCE, 2002, 5 (10) :936-938