Prolonged temporal interaction for peripheral visual processing in schizophrenia: evidence from a three-flash illusion.
Prolonged temporal interaction for peripheral visual processing in schizophrenia: evidence from a three-flash illusion.
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DOI：
10.1016/j.schres.2014.04.018
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发表时间：
2014-07
影响因子：
4.5
通讯作者：
Stromeyer C 3rd
中科院分区：
文献类型：
--
作者：
Chen Y;Norton D;Stromeyer C 3rd
Coherent perception of the visual world requires orderly processing of spatially and temporally distributed visual information across the visual field. The organization of this visual information is impaired in schizophrenia. We previously found that visual temporal integration in patients is prolonged, using flashes presented to the central fovea. In this study, we investigated this temporal interaction in both the fovea and fairly far out in the peripheral visual field. We used a ‘three-flash’ illusion paradigm in which two spatially-coincident light pulses (of 1 msec each) are perceived by healthy individuals as one, two or three flashes depending on the time interval between the pulses. In each trial, two light pulses were presented in the fovea or 34° out in the right visual field. The inter-stimulus pulse interval (ISI) ranged from 30 to 310 msec. The task for patients (n=28) and controls (n=26) was to indicate the number of flashes (one, two or three) perceived after each two-pulse presentation. For the controls, the peak of three-flash illusion were shifted to longer ISIs (150 msec) in the periphery compared to the fovea (110 msec). For the patients, the three-flash illusion was greater and occurred at longer ISIs (270 msec in the periphery and 190 msec at the fovea). Compared to central visual field, the range of temporal interactions in the periphery is prolonged to a greater extent in schizophrenia. This exacerbated temporal expansion in peripheral vision suggests a coarse temporal resolution for visual and cognitive organization in this mental disorder.
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影响因子：
10.6
作者：
Butler PD;Silverstein SM;Dakin SC
通讯作者：
Dakin SC
DOI：
10.1073/pnas.96.8.4724
发表时间：
1999-04-13
影响因子：
11.1
作者：
Chen, Y;Nakayama, K;Holzman, PS
通讯作者：
Holzman, PS
影响因子：
2.5
作者：
CONNOLLY, M;VANESSEN, D
通讯作者：
VANESSEN, D
影响因子：
1.8
作者：
ALLEN, D;HESS, RF
通讯作者：
HESS, RF
影响因子：
1.8
作者：
BOWEN, RW
通讯作者：
BOWEN, RW