Banca de QUALIFICAÇÃO: BRENO TERCIO SANTOS CARNEIRO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : BRENO TERCIO SANTOS CARNEIRO
DATA : 11/05/2017
HORA: 09:00
LOCAL: Sala de Aula da Psicobiologia
TÍTULO:
PALAVRAS-CHAVES:

Food anticipatory activity; Food-entrained oscillator; Odor; Olfactory stimulation.

PÁGINAS: 55
GRANDE ÁREA: Ciências Humanas
ÁREA: Psicologia
RESUMO:

Rhythmicity presents itself as a common aspect in living beings, the light-dark cycle of 24h being its most obvious environmental synchronizer. The availability of food constitutes an environmental synchronizer, which is evidenced in many species. In mammals, the main characteristic of the rhythms synchronized by food is its anticipatory feature, characterized by the increase of locomotion, wakefulness and body temperature in the hours that precede the feeding schedule. Convincing evidence shows that this anticipation is controlled by a true circadian oscillation system, although its physical structure is not known. The search for the physical substrate of the food-entrained oscillator has always been the main focus of the research in this area, and recent evidence shows that several brain regions seem to be involved in the synchronization by food. In recent years, in addition to the search for the neural substrate of such a system, attention has been paid to its possible mechanisms of synchronization. In other words, what would be the signals responsible for the synchronization of the system. In this work, the objective was to investigate the effect of olfactory stimulation on the induction of the anticipatory activity in Wistar rats. The animals were kept in a light-dark cycle of 14h light and 10h dark with continuous recording of motor activity. The experimental group received food odor stimulation (duration of one hour) in the third hour of the light phase for 19 days, and feeding (duration of one hour) in the twelfth hour of the light phase. Our results showed that the animals submitted to daily stimulation with food odor present moderate anticipation to the stimulation schedule. In addition, during the stimulation, the odor group presented greater response in motor activity than the control group. However, these results are restricted to the first 10 days of the protocol. This result suggests that the odor is capable of promoting anticipation, but weakly. In addition, there seems to be habituation to olfactory stimulation over the course of days. Therefore, studies investigating central nervous system activation in response to this type of stimulation will be of great relevance in the future.

MEMBROS DA BANCA:
Externo ao Programa - 1110960 - JANE CARLA DE SOUZA
Presidente - 1216466 - JOHN FONTENELE ARAUJO
Interno - 2998660 - MARIO ANDRE LEOCADIO MIGUEL