Disordered sensorimotor transformations for reaching following posterior cortical lesions

被引:16
作者
Darling, WG [1 ]
Rizzo, M
Butler, AJ
机构
[1] Univ Iowa, Dept Exercise Sci, Iowa City, IA 52241 USA
[2] Univ Iowa, Program Neurosci, Iowa City, IA 52241 USA
[3] Univ Iowa, Program Phys Therapy, Iowa City, IA 52241 USA
[4] Univ Iowa, Dept Neurol, Iowa City, IA 52241 USA
关键词
motel; vision; kinesthesia;
D O I
10.1016/S0028-3932(00)00113-5
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Preparation for reaches to visual targets depends on sensorimotor transformations (SMT) between target and limb coordinate systems. To examine neural substrates for SMT, we studied 19 individuals with focal lesions of the visual association cortices and white matter and 11 control subjects without brain lesions. SMT were assessed by measuring accuracy of reaches to remembered locations of visually presented targets. Results showed abnormally large SMT errors in all individuals with inferior parietal lobule (IPL) lesions and some subjects with lesions of the temporo-occipital regions and in occipital area 19. Types of abnormal errors (direction or distance) varied between subjects with similar lesions, e.g. IPL. patterns of abnormality included dissociations of distance and direction errors and of constant and variable errors. These findings are compatible with the hypothesis of different systems for guiding distance and direction of reaches distributed among structures in superior and inferior visual association cortex. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:237 / 254
页数:18
相关论文
共 41 条
[1]   ENCODING OF INTENTION AND SPATIAL LOCATION IN THE POSTERIOR PARIETAL CORTEX [J].
ANDERSEN, RA .
CEREBRAL CORTEX, 1995, 5 (05) :457-469
[2]   2 PARADOXES OF POINTING [J].
BERKINBLIT, M ;
FOOKSON, O ;
ADOMOVICH, S ;
POIZNER, H .
BEHAVIORAL AND BRAIN SCIENCES, 1992, 15 (02) :324-325
[3]   2 BASIC PROPERTIES OF SPACE REPRESENTATION IN THE BRAIN - EVIDENCE FROM UNILATERAL NEGLECT [J].
BISIACH, E ;
CAPITANI, E ;
PORTA, E .
JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY, 1985, 48 (02) :141-144
[4]  
BUTTNER U, 1988, NEUROANATOMY OCULOMO, V2
[5]   3-DIMENSIONAL INVIVO MAPPING OF BRAIN-LESIONS IN HUMANS [J].
DAMASIO, H ;
FRANK, R .
ARCHIVES OF NEUROLOGY, 1992, 49 (02) :137-143
[6]  
Damasio H., 1989, Lesion analysis in neuropsychology
[7]  
Darling W. G., 1995, Society for Neuroscience Abstracts, V21, P415
[8]  
DARLING WG, 1993, EXP BRAIN RES, V93, P534
[9]   EFFECTS OF POSTERIOR PARIETAL LESIONS ON VISUALLY GUIDED BEHAVIOR IN MONKEYS [J].
FAUGIERGRIMAUD, S ;
FRENOIS, C ;
STEIN, DG .
NEUROPSYCHOLOGIA, 1978, 16 (02) :151-&
[10]   EARLY STAGES IN A SENSORIMOTOR TRANSFORMATION [J].
FLANDERS, M ;
TILLERY, SIH ;
SOECHTING, JF .
BEHAVIORAL AND BRAIN SCIENCES, 1992, 15 (02) :309-320