著者

吉本 早苗

出版者

日本基礎心理学会

雑誌

基礎心理学研究 (ISSN:02877651)

巻号頁・発行日

vol.36, no.1, pp.75-84, 2017-09-30 (Released:2017-12-07)

参考文献数

74

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Time-varying patterns such as flickering lights can cause discomfort and induce seizures in photosensitive observers. An understanding of the temporal characteristics of visual discomfort is therefore important from both scientific and practical viewpoints. The purpose of this paper is to review existing studies on the impact of temporal characteristics on discomfort. Two related factors have been suggested as predictors of discomfort caused by time-varying patterns: (1) excessive contrast energy at the medium temporal frequencies to which the visual system is generally most sensitive, and (2) temporal deviations from the natural (1/f ) statistical characteristic. These effects mirror the visual discomfort caused by spatial patterns, in some ways but not all. The interaction between spatial and temporal parameters needs to be investigated to clarify the factors underlying visual discomfort.

著者

吉本 早苗 竹内 龍人

出版者

日本基礎心理学会

雑誌

基礎心理学研究 (ISSN:02877651)

巻号頁・発行日

vol.33, no.1, pp.19-27, 2014-09-30 (Released:2014-11-26)

参考文献数

38

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It is known that the perceived direction of a directionally ambiguous test stimulus is influenced by the moving direction of a preceding priming stimulus. To examine the spatial property of motion priming, we manipulated the spatial distance between the priming and test stimuli. Subjects judged the perceived direction of 180-deg phaseshifted sine-wave gratings (test stimulus) displayed immediately after the offset of a priming stimulus. We found that a brief priming stimulus induced negative motion priming when it was spatially distant from the test stimulus. We also found that positive motion priming was observed when both priming stimulus and test stimulus were presented at the peripheral retina. Negative motion priming was observed regardless of the position of the stimuli when the duration of the priming stimulus was longer. We conclude that the effect of spatial distance on the visual motion priming could be explained by the activation of a center-surround antagonistic motion detecting mechanism when a brief priming stimulus was used.

著者

吉本 早苗

出版者

日本女子大学大学院人間社会研究科

雑誌

日本女子大学大学院 人間社会研究科 紀要 = Japan Women's University Journal The Graduate School of Integrated Arts and Social Sciences (ISSN:13459805)

巻号頁・発行日

no.21, pp.105-118, 2015-03-12

著者

吉本 早苗

出版者

日本基礎心理学会

雑誌

基礎心理学研究 (ISSN:02877651)

巻号頁・発行日

pp.36.1, (Released:2017-05-11)

参考文献数

74

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Time-varying patterns such as flickering lights can cause discomfort and induce seizures in photosensitive observers. An understanding of the temporal characteristics of visual discomfort is therefore important from both scientific and practical viewpoints. The purpose of this paper is to review existing studies on the impact of temporal characteristics on discomfort. Two related factors have been suggested as predictors of discomfort caused by time-varying patterns: (1) excessive contrast energy at the medium temporal frequencies to which the visual system is generally most sensitive, and (2) temporal deviations from the natural (1/f) statistical characteristic. These effects mirror the visual discomfort caused by spatial patterns, in some ways but not all. The interaction between spatial and temporal parameters needs to be investigated to clarify the factors underlying visual discomfort.

著者

吉本 早苗 竹内 龍人

出版者

The Japanese Psychological Association

雑誌

心理学研究 (ISSN:00215236)

巻号頁・発行日

vol.83, no.4, pp.357-362, 2012

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It is known that a directionally ambiguous test stimulus is perceived to move in the same direction as a brief preceding priming stimulus when both stimuli are presented at the same retinal location (visual motion priming). To examine the spatial properties of visual motion priming under different retinal illuminance, we manipulated the distance between the priming and test stimuli. Participants judged the perceived direction of 180 deg phase-shifted, thus directionally ambiguous, sine-wave gratings (test stimulus) displayed immediately after the offset of a smoothly drifting priming stimulus. The distance between priming and test stimuli was varied from 0 to 10 deg in visual angle. Since the spatial summation area broadens under low retinal illuminance, we predicted that visual motion priming would be more conspicuous under mesopic vision than under photopic vision. Contrary to this prediction, as the retinal illuminance decreased and the distance between the primer and the test stimulus increased, the test stimulus was perceived to move in the direction opposite to the priming stimulus. We speculate that different motion integration systems are functioning depending on the retinal illuminance.