Biomedical subjects

D C Hatton

Publications and source records attributed to D C Hatton.

58 records · Page 4Linked to original sources

PubMed1975

Hippocampal ablation prolongs immobility response in rabbits (Oryctolagus cuniculus).

The present study was performed to test the hypothesis that damage to the hippocampus reduces tonic immobility in rabbits. Two measures were used: the number of successful inductions of tonic immobility in a test session and the duration of each successful immobilization. Both of these measures were found to increase in rabbits with hippocampal lesions rather than to decrease as expected. It is suggested that the hippocampus may act to suppress any ongoing dominant or prepotent response, whether the response involves movement or cessation of movement.

Analysis of Variance↗

PubMed1975

Cholinergic modulation of tonic immobility in the rabbit (Oryctolagus cuniculus).

The present study was performed to determine the effects of the anticholinergic agent scopolamine and the cholinergic agent physostigmine on tonic immobility in rabbits. Recordings of the electroencephalographic (EEG) activity from cortex and hippocampus were also made before, during, and after each test session. Scopolamine significantly prolonged the response and produced large amplitude slow wave activity in the EEG of both cortex and hippocampus. Physostigmine significantly shortened the duration of immobility and increased rhythmic slow activity in the frequency range of 5.5-9.1 Hz in the hippocampus while producing a desynchronized cortical rhythm. It is suggested that the cortex and hippocampus play a role in modulating tonic immobility duration by inhibiting the brain-stem structures thought to control this response.

Animals↗

PubMedDate not supplied

Effects of a participative intervention on high school students' image and valuation of nursing.

In this pretest, posttest, control group study, high school biology students (N = 451) were actively engaged in a dialogue with an investigator/change agent regarding specific nursing situations in which the image dimensions of caring, useful, scientifically knowledgeable, and autonomous were highlighted. The effects of this involvement and participation on students' image and valuation of nursing were assessed. The process was found to be highly effective in expanding students' image of nursing and moderately effective in increasing their valuation of nursing.

Adolescent↗

PubMedDate not supplied

Strategies for managing health problems among homeless women: three case studies.

The purpose of this article is to illustrate through case examples how homeless women experience coexisting health problems, and how they may conceal these stigmatizing health problems from others, including health professionals and shelter staff. The article will also address how nurse case managers can interact with these women so that together they can develop strategies about how to manage these complex health problems.

Adult↗