Publications (5)0 Total impact
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Article: 聴覚的エゴセンターの位置に及ぼす音源方向の効果
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ABSTRACT: The present study estimated the location of the origin of spatial coordinates in the human auditory localization system, which is called the auditory egocenter. A standard sound was presented from one of eight loudspeakers located at 30, 60, 120 and 150 degrees around the head. A loudspeaker for a comparison sound was moved by the experimenter on the arc at one of three distances of 30, 45 and 60cm from the head center, and the comparison sound was presented after the standard sound. Subjects' task was to answer whether the perceived direction of the comparison sound was frontward or backward with respect to that of the standard sound. The results showed that: (a) when the standard sound was presented within the central visual field, the estimated auditory egocenter was very near the midpoint of the interocular axis, and (b) when the standard sound was presented in the peripheral or out of the visual field, it was very near the head center. The results indicate that location of the auditory egocenter is variable along the head median plane, depending on the direction of target sound with respect to the head. -
Article: パターンランダムネスが時間知覚に及ぼす影響
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ABSTRACT: The present study examined how pattern randomness influences time perception. Randomness was defined as the amount of pattern entropy. The stimuli were random-dot patterns with low or high amounts of entropy. We used a time-reproduction task in which observers matched the duration of high- and low-random dot patterns to that of a dot matrix presented previously. The results from 10 observers showed that the reproduced durations of high-randomness patterns were longer than those of low-randomness patterns, indicating that the pattern randomness is one of the critical factors in time encoding. We discussed that the unequal allocation of attention to spatial patterns and to time leads to differences in perceived durations. -
Article: 児童期の感動体験が自己効力感・自己肯定意識に及ぼす影響
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ABSTRACT: When we read books or see noble sights, our states are emotionally moved (Tokaji, 2004). Japanese people call these states as "kandoh". The previous works have suggested the experiences of kandoh in youth or adulthood influenced self-efficacy. However, it is unclear that the experiences of kandoh in childhood influence self-consciousness of children. The purpose of this study was to examine factors which compose of the experiences of kandoh in childhood and how those factors influence on self-efficacy and self-esteem. We administered questionnaire to 389 children on the relationship between the experiences of kandoh and self-efficacy or self-esteem. Our results showed that: (a) the experiences of kandoh was constructed by one factor, (b) the experiences of kandoh had a positive effect on self-efficacy, and (c) the experiences of kandoh had a positive effect on self-esteem. These results suggest that the experiences of kandoh in childhood is effective for self-consciousness of children. -
Article: 心理学における陰影知覚研究の動向と展望
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ABSTRACT: Progress and issues of the study on the shading perception are reviewed. Shading is the gradual change of the luminous intensity which is often generated on an object when the light souce (e.g. the Sun) illuminates it. Our visual system is able in recover three dimensional world by using the shading information as a depth cue. It has been considered that the shading information is processed in the higher-order visual process. However, recent studics suggest that the information can be also extracted in the lower-order visual process and these proposals are supported by some neurophysiological evidences. This review is organized as follows: (1) two constraints in the shading perception, (2) the research method to investigate the shading perception. (3) the processing of the shading information in the higher and lower-order vision. (4) the predominance of the left light source, (5) the shading perception in animal and infant vision, and (6) neurophysiological evidence of the shading perception. -
Article: Audiovisual tau effect
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ABSTRACT: This study investigated how spatial intervals between successive visual flashes are influenced by the temporal intervals between auditory pure tones presented concurrently with the flashes. Three successive visual flashes defined two spatial intervals with different extents as well as two equal temporal intervals. The onsets of the first and third tones were temporally aligned with those of the first and third flashes, while the onset of the second tone was temporally offset to that of the second visual flash, resulting in shorter or longer temporal intervals between pairs of tones. Observers judged which of the first or second spatial intervals between flashes was shorter. The results showed that the shorter temporal interval between tones caused underestimation of the spatial interval between flashes. On the other hand, stimuli without the first and third tones did not result in underestimation of spatial intervals between flashes. These results indicate an audiovisual tau effect, which is triggered by a constant velocity assumption applied to moving objects defined by more than one modality.
