@article{oai:soar-ir.repo.nii.ac.jp:00000589,
 author = {今井,  章 and 後藤,  倬男},
 journal = {人文科学論集. 人間情報学科編},
 month = {Mar},
 note = {We obtained the event-related potentials (ERPs) under the condition that four observers compared a single circle (comparison stimulus) to inner or outer circle of a concentric circle (Delboeuf illusion figure) and responded to apparent size of the single circle as large or small by a key pressing. The constant method was used, and the size of comparison stimulus was prepared separately for the inner and the outer circle. This comprised two variations of seven circle steps changlng from the same size of the inner or outer circle to larger and smaller size than the inner (±24.0 %) or the outer (±16.0 %) circle in diameter. The ERPs were obtained at four scalp sites of Fz, Cz, Pz, and Oz. The inner circle was overestimated for 0.05°, and the outer underestimated for 0.06°, with showing the occurrence of assimilation process. Although several components of the ERPs were emerged under the observation of Delboeuf illusion, only P3 amplitudes at Fz and Cz were prominently changed in response to the psychophysical function produced by the behavioral data. Results suggest that the P3 amplitude may covary with the psychophysical judgment process when observers see Delboeuf illusion, and that the assimilation process may be described by some electrophysiological indices such as P3 amplitude., Article, 人文科学論集. 人間情報学科編 43: 39-51(2009)},
 pages = {39--51},
 title = {事象関連電位によるデルブーフ錯視の検討 : 同化過程における脳の応答について},
 volume = {43},
 year = {2009}
}