Vibrissal sense is not the main sensory modality in rat exploratory behavior in the elevated plus-maze
| Autor: | Silvio Morato, Marisol R. Lamprea, Fernando P. Cardenas |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Male
medicine.medical_specialty Elevated plus maze animal structures Thigmotaxis Sensation Sensory system Anxiety Audiology Rats Developmental psychology Behavioral Neuroscience Investigation methods Stimulus modality Vibrissae Exploratory Behavior medicine Animals Sensory deprivation Rats Wistar Psychology Relevant information |
| Zdroj: | Behavioural Brain Research. 122:169-174 |
| ISSN: | 0166-4328 |
| Popis: | Four groups of male Wistar rats were submitted to acute bilateral removal of mystacial vibrissae at different lengths from the follicle. Each group was divided into two subgroups, tested under high (150 Lux) and low environmental illumination (2 Lux). All the subjects were allowed to freely explore an elevated plus-maze for 5 min. Results indicated that rats tested under low illumination tended to explore the open arms more frequently and longer then rats tested under high illumination. When tested under low illumination, rats in the group that suffered whole vibrissa removal stayed longer in the open arms than those in the other groups but did not differ in the number of entries. The average increase in the length of open arm entries, rather than a decrease in aversion to the open arms, may be due to the need of more time to obtain information about the environment since there is no light and the vibrissae were removed. This effect was not seen with rats tested under high illumination, possibly because vision could be used to obtain relevant information. |
| Databáze: | OpenAIRE |
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