Hierarchical processing of tactile shape in the human brain

被引：204

作者：

Bodegård, A

Geyer, S

Grefkes, C

Zilles, K

Roland, PE ^{[1
]}

机构：

[1] Karolinska Inst, Dept Neurosci, Div Human Brain Res, S-17177 Stockholm, Sweden

[2] Univ Dusseldorf, C&O Vogt Brain Res Inst, D-40001 Dusseldorf, Germany

[3] Univ Dusseldorf, Dept Neuroanat, D-40001 Dusseldorf, Germany

[4] Res Ctr Julich, Inst Med, D-52425 Julich, Germany

来源：

NEURON | 2001年 / 31卷 / 02期

基金：

英国医学研究理事会;

关键词：

D O I：

10.1016/S0896-6273(01)00362-2

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

It is not known exactly which cortical areas compute somatosensory representations of shape. This was investigated using positron emission tomography and cytoarchitectonic mapping. Volunteers discriminated shapes by passive or active touch, brush velocity, edge length, curvature, and roughness. Discrimination of shape by active touch, as opposed to passive touch, activated the right anterior lobe of cerebellum only. Areas 3b and 1 were activated by all stimuli. Area 2 was activated with preference for surface curvature changes and shape stimuli. The anterior part of the supramarginal gyrus (ASM) and the cortex lining the intraparietal sulcus (IPA) were activated by active and passive shape discrimination but not by other mechanical stimuli. We suggest, based on these findings, that somatosensory representations of shape are computed by areas 3b, 1, 2, IPA, and ASM in this hierarchical fashion.

引用

页码：317 / 328

页数：12

共 72 条

[1]

Amunts K, 1999, J COMP NEUROL, V412, P319, DOI 10.1002/(SICI)1096-9861(19990920)412:2<319::AID-CNE10>3.0.CO

[2]

2-7

[3]

[Anonymous], 1967, ATLAS ANATOMIE STERE

[4] Functional MR imaging of the human sensorimotor cortex during haptic discrimination [J].