[Tachistoscope and dichotic listening test of the subject after the transection of the posterior part of the corpus callosum].
The authors made neuropsychological studies by the tachistoscope and the dichotic listening test on a subject who had undergone the transection of the posterior part of the corpus callosum. As to the tachistoscopic recognition, stimulus material was composed with the various Japanese letters (Katakana, Hiragana, Kanji), various faces (variations of the eyebrow form and the mouth form) and various slopes of line. Table 1 shows results of the cases (the subject was the present case, subjects 1 and subject 2 were past cases). It was seen that the performance of the subject on Japanese letters tasks showed greater right visual field superiority than the one of subject 1 and subject 2. As to the auditory recognition, the tasks used for the dichotic listening test were the following (Table 2, 3, 4). Different digits (three pairs) of the subject showed greater right ear superiority (right ear: 61.1, left ear 5.9) than the ones of subject 1 and subject 2.
D001932:Brain Neoplasms / Q000503:physiopathology* / Q000601:surgery; D003337:Corpus Callosum / Q000503:physiopathology / Q000601:surgery*; D004007:Dichotic Listening Tests; D005260:Female; D006320:Hearing Tests; D006801:Humans; D008875:Middle Aged; D014794:Visual Fields; D014796:Visual Perception / Q000502:physiology*