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Biomedical subjects

N J Bregman

Publications and source records attributed to N J Bregman.

8 recordsLinked to original sources
PubMed1985

Role of suggestions in digital skin temperature: implications for temperature biofeedback research.

The purpose of the present experiment was to explore the role suggestions and assessment procedures play in affecting digital skin temperature. Four different types of suggestions were given subjects (warm, cool, pseudo (electronic terms), and no suggestions). Twenty-five subjects were randomly assigned to the four experimental conditions. The data were analyzed by three popular assessment procedures typically found in the literature. As predicted, subjects displayed significant decreases in skin temperature each day regardless of the training condition they were in. The assessment procedures produced differential results.

Biofeedback, Psychology↗
PubMed1983

Voluntary control of skin temperature: role of experimenter presence versus absence.

The purpose of the present experiment was to determine whether the physical presence of an experimenter affects biofeedback performance according to social facilitation predictions. A 2(experimenter: presence vs. absence) X 2(task directionality: increase vs. decrease) design was employed. It was hypothesized that the presence of an experimenter would hinder the acquiring of skin temperature control in a biofeedback task. Fifty-three subjects were randomly assigned to the four experimental conditions. The results were compatible with social facilitation predictions, i.e., experimenter presence hindered performance.

Biofeedback, Psychology↗
PubMed1983

Constraints on the Yerkes-Dodson law in skin temperature biofeedback.

The purpose of the present experiment was to explore the relationship between motivation and task difficulty during temperature biofeedback. A 2 (task difficulty: decreasing vs. increasing) X 3 (motivation: 0 vs. 25 vs. 50 payment) design was employed. It was hypothesized that a curvilinear function would be obtained in the decrease groups following the Yerkes-Dodson law. Sixty-five subjects were randomly assigned to the six experimental conditions and were trained to increase or decrease their finger temperature. Motivation was manipulated by paying subjects 0, 25, or 50 for every 0.1 degree F they increased their finger temperature over baseline for three days. As predicted, the results are quite compatible with the Yerkes-Dodson law on day one in the decrease conditions. However, as training continued the motivational variable no longer played a significant role in influencing performance, although the curvilinear function was still obtained graphically. It would appear that motivation can play a significant role in a subject's ability to control skin temperature.

Biofeedback, Psychology↗
PubMed1983

Skin temperature biofeedback: evaluation of positive and negative monetary incentives.

The purpose of the present experiment was to evaluate how training procedure and monetary incentive affect skin temperature biofeedback: A 3 (training procedure) X 3 (monetary incentive) design was employed. It was hypothesized that positive and negative monetary feedback would enhance temperature control. Motivation was manipulated by paying subjects 1 cent, 10 cents, or 20 cents for every 0.1 degree F they decreased their finger temperature over baseline for three days. Results revealed a significant monetary effect only during the first training day.

Biofeedback, Psychology↗