Effects of retinal eccentricity and acuity on global-motion processing.
Effects of retinal eccentricity and acuity on global-motion processing.
复制标题
视网膜偏心率和敏锐度对全球运动处理的影响。
DOI:
10.3758/s13414-012-0283-2
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发表时间:
2012-07
期刊:
影响因子:
--
通讯作者:
Andersen GJ
中科院分区:
文献类型:
--
作者:
Bower JD;Bian Z;Andersen GJ
The present study assessed direction discrimination of moving random dot cinematograms (RDCs) at retinal eccentricities of 0, 8, 22 and 40 deg. In addition, Landolt C acuity was assessed at these eccentricities to determine whether changes in motion discrimination performance covaried with acuity in the retinal periphery. The results of the experiment indicated that discrimination thresholds increased with retinal eccentricity and directional variance (noise) independent of acuity. Psychophysical modeling indicated that the results of eccentricity and noise could be explained by an increase in channel bandwidth and an increase in internal multiplicative noise.
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