The effect of environmental stimulation on brain weight in previously undernourished rats

1980 ◽  
Vol 1 (5) ◽  
pp. 445-449 ◽  
Author(s):  
Hillary B. Katz ◽  
Christine A. Davies ◽  
John Dobbing
1981 ◽  
Vol 3 (3) ◽  
pp. 411-415 ◽  
Author(s):  
Patricia McConnell ◽  
Harry B.M. Uylings ◽  
Heidi H. Swanson ◽  
Ronald W.H. Verwer

1983 ◽  
Vol 4 (2) ◽  
pp. 90-115 ◽  
Author(s):  
Sydney S. Zentall

A theoretical integration of research concerned with environmental variables and their effects on students’ behavior and performance is presented. The impact of classroom stimuli, such as novelty, color, noise, proximity to teacher and peers on both normal and exceptional children is reviewed. The relation between these sources of classroom stimulation and information sources (i.e., type of task and access to material, person, and role resources) is also discussed. Large deviations from optimal levels of environmental stimulation, which more often occur for exceptional than for normal children, will produce attentional and activity disruptions sufficient to interfere with classroom performance and social interaction.


1998 ◽  
Vol 38 (4) ◽  
pp. 367-373
Author(s):  
Tohru SONODA ◽  
Keiichiro KONO ◽  
Naoya ITOKAZU ◽  
Tohru SUGIMOTO

Author(s):  
I. Champernowne

“Occupational therapy in psychiatry is a particularly fine art. Emphasis should be placed on constructive projects to awaken new interests and skills, and these must be adapted to the patient's individual needs. The patient emerging from a manic phase requires limited diversional activities, as it may only increase his responsiveness to environmental stimulation. The depressive patient responds better to easy tasks, as complex activities will increase his feelings of inadequacy. The emphasis here should be placed on diversion, which may take the patient out of himself. The schizophrenic requires activities symbolising reality, the neurotic with pent-up tension should be occupied with activities that give him an opportunity for energy release. Many patients will release more energy witnessing an international football match and by concentrating attention upon public affairs than in actual physical work. The patient identifies himself with his favourite player or team of players, political party or leader, etc. and, by projecting himself in real or imaginary actions, he secures a release of tension. Tension is a sympton of unreleased energy. In the properly selected work and recreations, the psychiatric finds an opportunity to release his unreleased tension, and this is the task of the psychiatric occupational therapist. It goes back to 1913 when the American Psychiatric Association adopted a resolution, namely ‘that occupational therapy marks the standing of a psychiatric organisation, and neglected or omitted the patients are not receiving the adequate care and treatment to which they are entitled.’ After all, occupational therapy is applied physical treatment.— Dr. Z. Wechsler on ‘Physical Therapies in Psychiatry’ in the Australian Association O.T. Bulletin, October, 1951.


2002 ◽  
Vol 90 (1) ◽  
pp. 236-238 ◽  
Author(s):  
Jože Balažic ◽  
Andrej Marušič

In 2000 we tested previously reported findings by Salib and Tadros that brain weight of fatal self-harm victims is higher than of those who died of natural causes. Our results were based on data from 15 suicides and 15 deaths of other causes. Data included matching variables of age, sex, time between death and postmortem examination, and temperature of the surrounding environment. The exploratory variables were brain weight and method of death. No significant difference was found between the brain weights of suicides and others. On the other hand, some differences were obtained for different suicide methods, which also differed in the temperature of the environment, this being lower for the group of suicides that occurred outdoors (around or below 0°C). Once we excluded all the outdoor cases and controls, a significantly higher brain weight was obtained for suicide cases. These and previous results are intriguing and require explanation. Respirator brain syndrome as described by Moseley, Molinari, and Walker in 1976 may provide only a partial explanation. Another possible suggestion is that higher brain weight in suicide victims may be related to previously demonstrated increased amygdala blood flow and subsequent amygdala enlargement due to the increased processing of emotional information.


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