Magnetic source imaging of tactile input shows task-independent attention effects in SII

被引：67

作者：

Hoechstetter, K

Rupp, A

Meinck, HM

Weckesser, D

Bornfleth, H

Stippich, C

Berg, P

Scherg, M

机构：

[1] Univ Heidelberg Hosp, Dept Neurol, Sect Biomagnetism, D-69120 Heidelberg, Germany

[2] Univ Heidelberg Hosp, Dept Neuroradiol, D-69120 Heidelberg, Germany

[3] Univ Constance, Dept Psychol, D-7750 Constance, Germany

[4] MEGIS Software GmbH, Munich, Germany

来源：

NEUROREPORT | 2000年 / 11卷 / 11期

关键词：

attention; magnetoencephalography; somatosensory cortex; touch;

D O I：

10.1097/00001756-200008030-00024

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

We investigated whether attention to different stimulus attributes (location, intensity) has different effects on the activity of the secondary (SII) somatosensory cortex. Tactile stimuli were applied to the left index finger and somatosensory evoked fields (SEFs) were recorded using a whole-head magnetoencephalography (MEG) system. Two oddball paradigms with stimuli varying in location or intensity were performed in an ignore and an attend condition. Brain sources were estimated by magnetic source imaging. No attention effect was observed for the primary SI area. However, attention enhanced SII activity bilaterally from 55 to 130 ms by 52% in the spatial and 64% in the intensity discrimination task. SII attentional enhancement was very similar in both paradigms and occurred both for deviants and standards. NeuroReport 11:2461-2465 (C) 2000 Lippincott Williams & Wilkins.

引用

收藏

页码：2461 / 2465

页数：5

相关论文

共 25 条

[1] 122-CHANNEL SQUID INSTRUMENT FOR INVESTIGATING THE MAGNETIC SIGNALS FROM THE HUMAN BRAIN [J].

AHONEN, AI ;

HAMALAINEN, MS ;

KAJOLA, MJ ;

KNUUTILA, JET ;

LAINE, PP ;

LOUNASMAA, OV ;

PARKKONEN, LT ;

SIMOLA, JT ;

TESCHE, CD .

PHYSICA SCRIPTA, 1993, T49A :198-205

[2] Tactile attention tasks enhance activation in somatosensory regions of parietal cortex: A positron emission tomography study [J].

Burton, H ;

Abend, NS ;

MacLeod, AMK ;

Sinclair, RJ ;

Snyder, AZ ;

Raichle, ME .

CEREBRAL CORTEX, 1999, 9 (07) :662-674

[3] Tactile-spatial and cross-modal attention effects in the second somatosensory and 7b cortical areas of rhesus monkeys [J].

Burton, H ;

Sinclair, RJ ;

Hong, SY ;

Pruett, JR ;

Whang, KC .

SOMATOSENSORY AND MOTOR RESEARCH, 1997, 14 (04) :237-267

[4] MAPPING EARLY SOMATOSENSORY EVOKED-POTENTIALS IN SELECTIVE ATTENTION - CRITICAL-EVALUATION OF CONTROL CONDITIONS USED FOR TITRATING BY DIFFERENCE THE COGNITIVE P-30, P40, P100 AND N140 [J].

DESMEDT, JE ;

TOMBERG, C .

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1989, 74 (05) :321-346

[5]

Efron B., 1993, INTRO BOOTSTRAP, V1st ed., DOI DOI 10.1201/9780429246593

[6] MAPPING STUDY OF SOMATOSENSORY EVOKED-POTENTIALS DURING SELECTIVE SPATIAL ATTENTION [J].

GARCIALARREA, L ;

BASTUJI, H ;

MAUGUIERE, F .

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1991, 80 (03) :201-214

[7] HUMAN SOMATOSENSORY EVOKED-POTENTIALS TO MECHANICAL PULSES AND VIBRATION - CONTRIBUTIONS OF SI-SOMATOSENSORY AND SII-SOMATOSENSORY CORTICES TO P50-COMPONENTS AND P100-COMPONENTS [J].

HAMALAINEN, H ;

KEKONI, J ;

SAMS, M ;

REINIKAINEN, K ;

NAATANEN, R .

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1990, 75 (02) :13-21

[8] SEPARATE FINGER REPRESENTATIONS AT THE HUMAN 2ND SOMATOSENSORY CORTEX [J].

HARI, R ;

HAMALAINEN, H ;

HAMALAINEN, M ;

KEKONI, J ;

SAMS, M ;

TIIHONEN, J .

NEUROSCIENCE, 1990, 37 (01) :245-249

[9] SOMATOSENSORY EVOKED CEREBRAL MAGNETIC-FIELDS FROM SI AND SII IN MAN [J].

HARI, R ;

REINIKAINEN, K ;

KAUKORANTA, E ;

HAMALAINEN, M ;

ILMONIEMI, R ;

PENTTINEN, A ;

SALMINEN, J ;

TESZNER, D .

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1984, 57 (03) :254-263

[10] FUNCTIONAL-ORGANIZATION OF THE HUMAN 1ST AND 2ND SOMATOSENSORY CORTICES - A NEUROMAGNETIC STUDY [J].

HARI, R ;

KARHU, J ;

HAMALAINEN, M ;

KNUUTILA, J ;

SALONEN, O ;

SAMS, M ;

VILKMAN, V .

EUROPEAN JOURNAL OF NEUROSCIENCE, 1993, 5 (06) :724-734