PubMed Health⌕ Search

Biomedical subjects

M Nakaseko

Publications and source records attributed to M Nakaseko.

7 recordsLinked to original sources
PubMed1992

Hand differences on a sensory test using tactual stimuli.

To examine hand differences in the sensory feeling of texture, 35 subjects made sensory evaluations with the left and the right hands to a tactile stimulus (sponge rubber) and also marked on a 5-point Likert scale 50 adjectives which represented various tactual feelings. Factor analyses, applied to the data of 35 subjects, showed that the left hand related more to a keen and sharp dimension while the right hand related more to a mild and soft dimension of the tactile stimulus. Possible relations of these hand differences in sensitivity to hemisphere functioning were discussed.

Adult↗
PubMed1990

[Comparison of muscular load between normal handwriting and constrained writing forced by optical character reader (OCR) cards].

Optical character readers (OCR) were introduced into an office as input devices for a computer system. In order to input data in to the system, workers of this office had to write down the data on sheets of specially formatted paper, called OCR cards. Some workers engaged in this task complained of symptoms of occupational cervicobrachial disorders (OCD). Observation suggested that the constrained motion of writing on OCR cards may cause such symptoms. Therefore, in order to prevent OCD, the writing motion was analyzed. The electromyogram of the upper extremities and shoulders was also compared between normal handwriting and constrained writing on the OCR cards in laboratory studies. The results were as follows. 1. Writing time per letter for the OCR cards was longer than that for normal handwriting. 2. Discharge of muscles observed through electromyogram was larger per letter for the OCR cards than for the normal handwriting. 3. Discharge from the trapezius per unit time for the OCR cards was rather large. This phenomenon showed that the workload of constrained writing was heavier than that of normal handwriting. The results suggests that more careful preventive measures for OCD should be promoted in comparison with ordinary clerical tasks.

Adult↗