INTERACTIONS OF SPECTRAL, SPATIAL, AND TEMPORAL MECHANISMS IN THE HUMAN PATTERN VISUAL-EVOKED POTENTIAL

被引：13

作者：

KORTH, M ^{[1
]}

NGUYEN, NX ^{[1
]}

RIX, R ^{[1
]}

SEMBRITZKI, O ^{[1
]}

机构：

[1] SIEMENS AG, MED ENGN GRP, W-8520 ERLANGEN, GERMANY

来源：

VISION RESEARCH | 1993年 / 33卷 / 17期

关键词：

PATTERN VEP; COLOR MECHANISM; SPECTRAL SENSITIVITY; SPATIAL SELECTIVITY; TEMPORAL MECHANISM;

D O I：

10.1016/0042-6989(93)90118-G

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The human pattern onset-offset visual evoked potential (VEP) was studied with different colours and spatial frequencies presented on a steady homogeneous intensive yellow background. Under this condition a broad, late negative wave (N2) dominated by the blue-sensitive mechanism and a sharper earlier positive wave (P1) dominated by the red-green-sensitive mechanism can be observed. With a 460 nm pattern N2 shows a strong amplitude tuning at low-medium spatial frequencies. With 550 nm an early negative component (N1) is added showing an amplitude tuning at high spatial frequencies. Different spatial resolutions of the two colour mechanisms are thus indicated. With pattern-reversal stimuli the 550 nm stimulus shows a higher temporal resolution than the 460 nm stimulus.

引用

页码：2397 / 2411

页数：15

共 55 条

[1] SELECTIVE CHROMATIC ADAPTATION IN PRIMATE PHOTORECEPTORS [J].