Warren J Stewart
Biographic Data
| ID | 7118030 |
|---|---|
| NAME | Warren J Stewart |
| GIVEN NAMES | Warren J |
| FAMILY NAME | Stewart |
| SIGNATURE | STEWART W J |
| AFFILIATIONS | University of Newcastle Australia |
| VERIFIED | No |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 5 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1975 |
| LATEST PUBLICATION YEAR | 1977 |
| H-INDEX | 0 |
Habituation Should Be Measured Directly
The effect of 0.1 and 0.25 mg/kg physostigmine on the rate of habituation of ambulation, rearing and grooming in rats tested in a 36- × 36-in. open field was investigated. While physostigmine decreased all responses, it did not facilitate their rate of habituation. The need to measure habituation directly is discussed
Effects of Experience in the Test Environment on Scopolamine-Induced Changes in Activity in an Exploration Box
Saline and 0.25-mg/kg scopolamine-treated rats (6 groups of 8) were tested under three conditions of experience in an exploration box. Prior exposure affected scopolamine-induced changes in ambulation, rearing and grooming
Assessing Interactions of Environment × Drug
Size of the Environment as a Determiner of Effects of Scopolamine
64 rats were injected with either saline or 0.25 mg/kg scopolamine and tested in one of four different-sized open fields. There was a positive correlation between increasing field size and increased ambulation in undrugged animals. Scopolamine increased ambulation in rats in the 2 smaller fields but not in the larger 2 fields; and it did not attenuate the rate of habituation. Rearing and grooming were not affected so much by field size, but groom…
Hippocampal Lesions and Performance on a Geometric Progressive Ratio Schedule
Previous research has frequently reported that hippocampally lesioned rats perseverate. On a geometric progressive ratio schedule, in which reinforcement contingencies became gradually more adverse, rats with dorsal or ventral hippocampal lesions did not perseverate more than cortically lesioned or unoperated controls ( ns = 7, 8). There was a significant reduction in the number of responses per session over the 10 experimental days, for all grou…
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Size of the Environment as a Determiner of Effects of Scopolamine
64 rats were injected with either saline or 0.25 mg/kg scopolamine and tested in one of four different-sized open fields. There was a positive correlation between increasing field size and increased ambulation in undrugged animals. Scopolamine increased ambulation in rats in the 2 smaller fields but not in the larger 2 fields; and it did not attenuate the rate of habituation. Rearing and grooming were not affected so much by field size, but groom…
Hippocampal Lesions and Performance on a Geometric Progressive Ratio Schedule
Previous research has frequently reported that hippocampally lesioned rats perseverate. On a geometric progressive ratio schedule, in which reinforcement contingencies became gradually more adverse, rats with dorsal or ventral hippocampal lesions did not perseverate more than cortically lesioned or unoperated controls ( ns = 7, 8). There was a significant reduction in the number of responses per session over the 10 experimental days, for all grou…
Assessing Interactions of Environment × Drug
Habituation Should Be Measured Directly
The effect of 0.1 and 0.25 mg/kg physostigmine on the rate of habituation of ambulation, rearing and grooming in rats tested in a 36- × 36-in. open field was investigated. While physostigmine decreased all responses, it did not facilitate their rate of habituation. The need to measure habituation directly is discussed
Effects of Experience in the Test Environment on Scopolamine-Induced Changes in Activity in an Exploration Box
Saline and 0.25-mg/kg scopolamine-treated rats (6 groups of 8) were tested under three conditions of experience in an exploration box. Prior exposure affected scopolamine-induced changes in ambulation, rearing and grooming
Psychology (5 works) · Developmental psychology (4 works) · Medicine (4 works) · Anesthesia (3 works) · Neuroendocrine regulation and behavior (3 works) · Neuroscience (3 works) · Audiology (2 works) · Habituation (2 works) · Open field (2 works) · Psychiatry (2 works)