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Biomedical subjects

G G Ball

Publications and source records attributed to G G Ball.

10 recordsLinked to original sources

Modifying the behavior of the violent patient.

Different behavioral techniques are briefly described for treating the violent patient in a hospital setting. Emphasis is placed on doing a careful assessment of the situation and behavior before attempting a behavioral intervention. It is also emphasized that all staff members involved be adequately trained, otherwise the procedures tend to fail. Techniques include strategies for changing the environment, as well as using relaxation procedures, systematic desensitization, differential reinforcement schedules, token economies, response cost, time out, and social skills training. Multi-component programs are also briefly mentioned. The paper emphasizes that violent behavior can be greatly reduced if approached in a systematic way, using procedures based on sound research methodology.

Behavior Therapy↗

Vagotomy: effect on electrically elicited eating and self-stimulation in the lateral hypothalamus.

A subdiaphragmatic vagotomy markedly inhibits eating and self-stimulation produced in rats by lateral hypothalamic stimulation. The stomach is known to be affected by hypothalamic stimulation via the vagus, and afferents from the stomach can influence the hypothalamus via the same nerve. Consequently, this result suggests that eating and self-stimulation may be partly controlled by hypothalamic influences on the stomach which, in turn, affects hypothalamic sensitivity.

Animals↗

Histamine: effect on self-stimulation.

When injected discretely into the lateral hypothalamus of rats, histamine inhibited electrical self-stimulation at the injection site without affecting self-stimulation in the contralateral lateral hypothalamus. This effect was blocked by prior treatment with antihistaminics. Histidine, the amino acid precursor of histamine, produced a similar effect after a delay of 6 to 10 minutes.

Animals↗

Self-stimulation in the ventromedial hypothalamus.

Male Sprague-Dawley rats pressed a bar for electrical stimulation of the ventromedial hypothalamus. The threshold for such behavior correlated positively with the threshold to stop feeding and the threshold to escape from prolonged stimulation at the same electrode site. The results again open the question of the role that the ventromedial area is playing in positively reinforcing and punishment systems.

Animals↗

Frequency-specific relation between hippocampal theta rhythm, behavior, and amobarbital action.

The frequency of the hippocampal theta rhythm in freely moving rats varies predictably in relation to behavior in a simple learning situation. The theta rhythm may be driven by electrical stimulation of the medial septal area at frequencies within the theta range. The threshold for septal driving is lowest at that frequency which the rat displays in response to frustrative nonreward; the driving threshold is selectively raised at this frequency by sodium amobarbital. It is suggested that the behavioral effects of amobarbital are due to a disruption of the theta frequency normally displayed in response to nonreward.

Amobarbital↗