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The PSE in the size of a center circle (CC) was measured by varying the size of the surrounding circle (SCs) through the method of limits. Four standard stimuli (SS:3 size ratio + 1 control stimulus) and one comparison stimulus (CS), displayed on two personal computers (NEC:9801XA) were presented to a subject located 114 cm away from the stimulus display (NEC: N-5923). The subject, male with norman vision and good experience in this type of experiment, was instructed to compare the apparent size of the CC of the SS presented randomly at the center of the one display with that of the CS (a single-circle) presented on the other display. Further, the subject was exposed to the SS in the lefthand side of the display and the CS in the righthand side. This study revealed the following four results: (1) The PSE s showed no significant variation with the prolonged observation (Fig.2A). 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  1. A100 文学部/人文学研究科・文学研究科・国際言語文化研究科
  2. A100b 紀要
  3. 名古屋大学文学部研究論集.哲学
  4. 39

Baldwin錯視の反復長時間連続観察に関する一考察

https://doi.org/10.18999/jouflp.39.93
https://doi.org/10.18999/jouflp.39.93
191f21ed-f145-40a6-9ff0-237224910529
名前 / ファイル ライセンス アクション
jouflp_39_93.pdf jouflp_39_93.pdf (782.4 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-05-29
タイトル
タイトル Baldwin錯視の反復長時間連続観察に関する一考察
その他のタイトル
その他のタイトル Effects on repeated and belonged observations in Baldwin illusion
著者 後藤, 倬男

× 後藤, 倬男

WEKO 23429

後藤, 倬男

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GOTO, Takuo

× GOTO, Takuo

WEKO 23430

GOTO, Takuo

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抄録
内容記述 This study presents results from the examination of what effects the repeated and prolonged observations produced on the response indices, such as magnitude of illusion(PSE), judgment frequency (FREQ), and judgment time (TIME), using Baldwin illusion similar to Ebbinghaus illusion as shown in Fig.1. The PSE in the size of a center circle (CC) was measured by varying the size of the surrounding circle (SCs) through the method of limits. Four standard stimuli (SS:3 size ratio + 1 control stimulus) and one comparison stimulus (CS), displayed on two personal computers (NEC:9801XA) were presented to a subject located 114 cm away from the stimulus display (NEC: N-5923). The subject, male with norman vision and good experience in this type of experiment, was instructed to compare the apparent size of the CC of the SS presented randomly at the center of the one display with that of the CS (a single-circle) presented on the other display. Further, the subject was exposed to the SS in the lefthand side of the display and the CS in the righthand side. This study revealed the following four results: (1) The PSE s showed no significant variation with the prolonged observation (Fig.2A). The PSEs of the three size ratios (1/2, 1/1, and 2/1) maintained almost an identical level in contrast either to the decrease (Coren & Girgus, 1974) or to the shift to overestimation (Day, 1962; Goto, 1987, 1990; Tanaka, 1989; Goto & Ohya, 1989). (2) The FREQs represented almost the same variations as those of the above PSEs as shown in Fig.2B. However, the TIMEs decreased as the observation was prolonged as shown in Fig.2C. (3)Both the PSEs and the FREQs decreased and then increased likewise as the experiment was repeated (Figs.3A and 3B). In contrast, the TIMEs variations were almost identical to those of the prolonged observation (Figs.2C and 3C). (4) With Baldwin illusion, the PSE produced the characteristic variation as a function of the size ratio between the SCs and the CC (Fig.4A). As we proved in our previous studies (Goto, 1978, 1980a, b, 1987, 1990, 1991; Goto & Ohya, 1989), this variation manifested a "size contrast" between the SCs and the CC. In conclusion, this study has verified again that Baldwin illusion is the "illusion of size contrast." Further, the PSEs and FREQs are almost unaffected by the prolonged observation, with the similar effect resulted from the repeated experiment. These results suggested that almost the stable PSEs are generated by the subject even under the quicker judgment throughout the prolonged and/or the repeated observation, and that the "size contrast" is processed mainly under the lower stages of perceptual judgment.
内容記述タイプ Abstract
出版者
出版者 名古屋大学文学部
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
ID登録
ID登録 10.18999/jouflp.39.93
ID登録タイプ JaLC
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 0469-4716
書誌情報 名古屋大学文学部研究論集 哲学

巻 39, p. 93-101, 発行日 1993-03
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/10060
識別子タイプ HDL
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