Biomedical subjects

E Osato

Publications and source records attributed to E Osato.

3 recordsLinked to original sources

PubMed1995

Relations among heart rate, immediate memory, and time estimation under two different instructions.

The present study was done to elucidate the relations among heart rate, digit memory, and time estimation under two different instructions, standard and evaluative. 60 women heard and recalled 8 digits. Subjects reproduced 4-, 8-, and 16-sec. durations of a buzzer and also estimated the durations. Data were discussed in terms of the hypothesis of an inverted U-shaped relationship between arousal and performance. These data suggest relations among the three variables which were influenced by two different instructions.

Adolescent↗

PubMed1983

[Effects competition and cooperation between two participants on a third one's heart rate, problem solving, and cognitive responses in triad].

Forty-two women's junior college students, healthy and aged 19 to 20 years, were divided into two (competitive or cooperative) groups, each consisting of seven triads. A problem solving task was given to each triad with two ("paired") participants instructed to be either competitive or cooperative. Mean heart rate during problem solving increased in both groups, but the degree of the heart rate increment showed significant differences as a function of group condition and position within triad. The heart rate of competitive participants increased more than the third ("isolated") one, while that of cooperative participants increased less. Analyses of the task performance and cognitive responses suggested that hyperarousal was induced in the isolated participant under the cooperative situation.

Adult↗

PubMedDate not supplied

Effects of antianxiety drug and personality on stress-inducing psychomotor performance test.

The present study was carried out to clarify the effects of an antianxiety drug and of personality characteristics on a psychomotor performance test. Forty-eight healthy women college students were chosen from 64 volunteers as having either high or low levels of trait anxiety, neuroticism, or extroversion. Subjects with high trait anxiety and/or neuroticism tended to show a decrease in both speed and accuracy of the mirror drawing test (MDT) in the initial nondrug trials. Bromazepam, 5 mg, a benzodiazepine derivative, decreased this decrement in highly anxious subjects but worsened the speed in less anxious subjects. The personality traits of subjects, as well as the degree to which a performance test will induce stress, must be considered when evaluating the effects of antianxiety drugs on the performance of normal volunteers. The clinical anxiety-reducing efficacy of drugs may be predicted by using the MDT in subjects with high levels of anxiety and/or neuroticism.

Adolescent↗