Modulation of human extrastriate visual processing by selective attention to colours and words

被引:79
作者
Nobre, AC
Allison, T
McCarthy, G
机构
[1] Yale Univ, Sch Med, Neuropsychol Lab, W Haven Vet Affairs Med Ctr, New Haven, CT USA
[2] Yale Univ, Sch Med, Dept Neurosurg, New Haven, CT USA
[3] Yale Univ, Sch Med, Dept Neurol, New Haven, CT 06510 USA
关键词
visual selective attention; event-related potentials; extrastriate cortex; top-down modulation;
D O I
10.1093/brain/121.7.1357
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
The present study investigated the effect of visual selective attention upon neural processing within functionally specialized regions of the human extrastriate visual cortex. Field potentials were recorded directly from the inferior surface of the temporal lobes in subjects with epilepsy. The experimental task required subjects to focus attention on words from one of two competing texts. Words were presented individually and foveally. Texts were interleaved randomly and were distinguishable on the basis of word colour, Focal held potentials were evoked by words in the posterior part of the fusiform gyrus, Selective attention strongly modulated long-latency potentials evoked by words. The attention effect co-localized with word-related potentials in the posterior fusiform gyrus, and was independent of stimulus colour. The results demonstrated that stimuli receive differential processing within specialized regions of the extrastriate cortex as a function of attention. The late onset of the attention effect and its co-localization with letter string-related potentials but not with colour-related potentials recorded from nearby regions of the fusiform gyrus suggest that the attention effect is due to top-down influences from downstream regions involved in word processing.
引用
收藏
页码:1357 / 1368
页数:12
相关论文
共 61 条
  • [1] VISUAL EVENT-RELATED POTENTIALS TO COLORED PATTERNS AND COLOR NAMES - ATTENTION TO FEATURES AND DIMENSION
    AINE, CJ
    HARTER, MR
    [J]. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1986, 64 (03): : 228 - 245
  • [2] POTENTIALS-EVOKED IN HUMAN AND MONKEY CEREBRAL-CORTEX BY STIMULATION OF THE MEDIAN NERVE - A REVIEW OF SCALP AND INTRACRANIAL RECORDINGS
    ALLISON, T
    MCCARTHY, G
    WOOD, CC
    JONES, SJ
    [J]. BRAIN, 1991, 114 : 2465 - 2503
  • [3] ELECTROPHYSIOLOGICAL STUDIES OF COLOR PROCESSING IN HUMAN VISUAL-CORTEX
    ALLISON, T
    BEGLEITER, A
    MCCARTHY, G
    ROESSLER, E
    NOBRE, AC
    SPENCER, DD
    [J]. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1993, 88 (05): : 343 - 355
  • [4] HUMAN EXTRASTRIATE VISUAL-CORTEX AND THE PERCEPTION OF FACES, WORDS, NUMBERS, AND COLORS
    ALLISON, T
    MCCARTHY, G
    NOBRE, A
    PUCE, A
    BELGER, A
    [J]. CEREBRAL CORTEX, 1994, 4 (05) : 544 - 554
  • [5] FACE RECOGNITION IN HUMAN EXTRASTRIATE CORTEX
    ALLISON, T
    GINTER, H
    MCCARTHY, G
    NOBRE, AC
    PUCE, A
    LUBY, M
    SPENCER, DD
    [J]. JOURNAL OF NEUROPHYSIOLOGY, 1994, 71 (02) : 821 - 825
  • [6] HUMAN CORTICAL POTENTIALS-EVOKED BY STIMULATION OF THE MEDIAN NERVE .1. CYTOARCHITECTONIC AREAS GENERATING SHORT-LATENCY ACTIVITY
    ALLISON, T
    MCCARTHY, G
    WOOD, CC
    DARCEY, TM
    SPENCER, DD
    WILLIAMSON, PD
    [J]. JOURNAL OF NEUROPHYSIOLOGY, 1989, 62 (03) : 694 - 710
  • [7] Allison T., 1986, PSYCHOPHYSIOLOGY SYS, P5
  • [8] ALLISON T, 1986, NEUROIMAGE 2, V3, pS263
  • [9] SHIFTING ATTENTION IN VISUAL SPACE - THE EFFECTS OF PERIPHERAL CUEING ON BRAIN CORTICAL POTENTIALS
    ANLLOVENTO, L
    [J]. INTERNATIONAL JOURNAL OF NEUROSCIENCE, 1995, 80 (1-4) : 353 - 370
  • [10] SEMANTIC PROCESSING AND MEMORY FOR ATTENDED AND UNATTENDED WORDS IN DICHOTIC-LISTENING - BEHAVIORAL AND ELECTROPHYSIOLOGICAL EVIDENCE
    BENTIN, S
    KUTAS, M
    HILLYARD, SA
    [J]. JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 1995, 21 (01) : 54 - 67