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Biomedical subjects

T Hatta

Publications and source records attributed to T Hatta.

At least 127 records · Page 7Linked to original sources
PubMed1990

[Intrapleural minocycline for postoperative air leakage and control of malignant pleural effusion].

Minocycline pleurodesis with intrapleural pretreatment of lidocaine (150 mg) was performed on 19 patients. Minocycline was instilled into the pleural space for postoperative air leakage in 12 patients and control of malignant pleural effusion in 7 patients. Postoperative air leakage persisted longer than seven days was indicated instillation of minocycline (300 mg) with thoracostomy drainage. Satisfactory results were obtained in 11 of the 12 patients (92%) treated with this method. In 7 patients to control malignant pleural effusion, only one of these patients had recurrence of pleural effusion. Seventeen patients of all 19 subjects were free of pain following pleurodesis. None of these patients had a side effect of lidocaine. In conclusion of instillation, minocycline with thoracostomy drainage is a safe and an effective technique.

Adult↗
PubMed1989

Learning effects of piano playing on tactile recognition of sequential stimuli.

To examine the effect of learning experiences of piano playing on a tactile sequential recognition task, two experiments were conducted. In the first experiment, pianists and control subjects were given sequential tactile stimuli and were asked to report the simulated fingers and the order. The pianists showed a left hand superiority and performed better than the control group. In the second experiment, the skilled pianists and the control subjects were given both sequential tactile stimuli and auditory stimuli (unrelated melodies) simultaneously. The sequential stimuli recognition of the skilled pianists was interfered with by the presentation of the unrelated melody, and this tendency was more prominent in their left hand, while the performance of the control subjects was not affected by the presentation of the melody. These results suggest that pianists employed a special strategy, such as transforming tactile stimuli into something like a melody to improve their performance. Based upon these results, effects of learning experiences on hemisphere function were discussed.

Adult↗
PubMed1988

Hemispheric specialization of abacus experts in mental calculation: evidence from the results of time-sharing tasks.

Hemispheric specialization for mental calculation and verbal tasks in abacus (Soroban in Japanese) experts and control subjects was tested using time-sharing tasks. In Experiment 1, the effects of auditorily presented mental calculation and news-listening tasks on sequential finger tappings were examined. The results revealed that in the mental calculation condition, abacus experts showed greater interference effects on left hand tapping, whereas control subjects showed greater interference effects on right hand tapping (as compared to left hand). In the news-listening condition, abacus experts showed no hand difference while the controls showed greater interference effects on the right hand. In Experiment 2, the effects of visually presented mental calculation and word-reading tasks on sequential finger tapping were examined. The results revealed that in the mental calculation condition, abacus experts showed a non-significant tendency towards greater interference in the left hand whereas the controls showed no hand difference. In the word-reading condition, both abacus experts and controls showed greater interference in the right hand than in the left hand. In Experiment 3, intermediate and upper-rank abacus experts performed a similar task to Experiment 1 under two instruction conditions. The results of this control experiment confirmed that a greater left hand reduction in calculation of abacus experts is not due to subject's cognitive mode but due to the amount of abacus learning experience. These data suggest that (1) learning experiences can affect the pattern of cerebral specialization through the change of approaches to perform cognitive tasks, and (2) the right hemisphere engages in mental calculation for the abacus experts whereas the left hemisphere contributes to mental calculation in ordinary people having no experience of abacus learning.

Adult↗
PubMed1987

Shift of visual field advantage by learning experience of foreign words.

Effects of Hebrew words learning on visual field advantage were examined with Japanese subjects. Subjects who showed no visual field advantage to Hebrew words in the first testing were assigned randomly into four experimental groups; learn pronunciation only, learn meaning only, learn both pronunciation and meaning, and learn nothing. After then, subjects were re-tested for Hebrew words discrimination. A right visual field advantage appeared in both pronunciation only and pronunciation plus meaning groups. These results suggest that mastery of pronunciation seems to be a crucial factor in producing a shift of visual field advantage.

Female↗
PubMed1986

Hemispheric asymmetries in a tactile bisection task: effects of hemispace of presentation.

The validity of Bowers and Heilman's hemispace hypothesis (Neuropsychologia 18, 491-498, 1980) that "laterality effects depend upon the spatial condition in which a stimulus is presented" was examined in two tactile bisection experiments (one with adults and the other with kindergarten children). Three indices: absolute error, constant error and directional error were employed to measure the accuracy of the two hands and hemispaces. The results did not support the hemispace hypothesis, though weak spatial condition effects appeared for female subjects.

Child↗
PubMed1985

Reading disabilities in Japan: evidence against the myth of rarity.

The incidence of the reading disabilities among 250 Japanese children (8.5-13.4 years old) was measured by a standardized reading ability test which had recently been developed. It was found that 16.4% of the children tested have a one year delay, and 15.2% of the children have a two year delay. The results show that Makita's (1968) claim concerning the rarity of the incidence of reading disabilities in Japan is incorrect.

Adolescent↗
PubMed1985

Behavior disorders and laterality of cerebral function.

A dichotic listening test was employed to test the hypothesis that behavior disorders might have an abnormal laterality patterns of cerebral function. Eighteen behavior disorder out-patients of the psychiatry department at an university hospital and seventeen normal subjects were requested to recall dichotically presented words. The results showed that compared with the normal controls, the subjects with behavior disorders yielded less prominent right ear advantage, lesser response ear alternations, but better overall performances. The results do not support the hypothesis of the left hemisphere dysfunction in behavior disorders but suggest the possibility of the right hemisphere dysfunction.

Adolescent↗
PubMed1984

Differences in face touching by Japanese and British people.

The face touching behavior of Japanese and British subjects was compared under three different conditions, viz. listening to a lecture, listening to music and without a specially assigned task. The results showed that (1) British people did more frequent face touching than Japanese people and left hand usage was more prominent, while the Japanese did not show a hand difference in either the lecture listening or the no-task condition, (2) the duration of face touching did not differ between Japanese and British and (3) British people touched their chin and mouth frequently while Japanese touched their nose and eyes frequently. From these results the hypothesis of cross-cultural difference of cerebral functioning between the Japanese and the British was examined.

Adult↗