Memory-driven processing in human medial occipital cortex: An event-related optical signal (EROS) study

被引：34

作者：

Gratton, G ^{[1
]}

Fabiani, M ^{[1
]}

Goodman-Wood, MR ^{[1
]}

Desoto, MC ^{[1
]}

机构：

[1] Univ Missouri, Dept Psychol, Columbia, MO 65211 USA

来源：

PSYCHOPHYSIOLOGY | 1998年 / 35卷 / 03期

关键词：

medial occipital cortex; area VI; event-related optical signal (EROS); memory-driven processing; pattern recognition; hemispheric organization;

D O I：

10.1017/S0048577298001292

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

Memory-driven processing in medial occipital areas (Area V1 and immediately adjacent structures) was investigated noninvasively using the event-related optical signal (EROS). Subjects viewed two letter stimuli presented in the left and right hemifields, respectively. They then viewed a centrally presented lest letter and had to indicate whether this letter was the same as either of the letters presented earlier. The initial EROS response to the test stimulus in medial occipital areas (latency: 50-150 ms) was unilaterally suppressed in the hemisphere previously exposed to the same stimulus. This finding suggests that medial occipital cortex activity is modulated by a rapidly adapting hemispheric-specific pattern recognition mechanism.

引用

页码：348 / 351

页数：4

共 24 条

[1] Spatial selective attention affects early extrastriate but not striate components of the visual evoked potential [J].