Banca de QUALIFICAÇÃO: IARA BEATRIZ SILVA FERRE

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : IARA BEATRIZ SILVA FERRE
DATA : 11/03/2019
HORA: 15:00
LOCAL: Sala Sagui
TÍTULO:

Dynamics of cortical neural activity during pedaling: modulation by visual stimuli

PALAVRAS-CHAVES:

Parkinson; Bike; Electroencephalogram (EEG); Pedaling

PÁGINAS: 37
GRANDE ÁREA: Ciências Humanas
ÁREA: Psicologia
RESUMO:

The use of cycling as a therapeutic tool for patients with Parkinson's disease, especially for the purpose of motor rehabilitation, has been justified by several clinical studies. In people with this disease, the act of pedaling promotes both an improvement in motor symptoms and a reduction in tremors, bradykinesia and cognition. The neurophysiological mechanisms involved in these effects are poorly understood. It is known that pedaling causes suppression of cortical neural activity and subthalamic nuclei, especially in the frequency and power of the beta band (13-35 Hz). It is suggested that this effect is due to the activation of cortical neural circuits by the sensorial feedback of the lower limbs during the pedaling movement, which is simpler than walking since the pedal connects the two legs and makes movement more simplified when compared to walking. An open question is whether this effect is influenced by other sensory modalities, and the effect on healthy people is not known. Therefore, this project aims to study the neural dynamics through electroencephalogram technique during pedaling in volunteers with and without the presence of visual stimulation. The strategy of blindfolding and depriving them of the main human sensory activity allow a change in neural activity, with the appearance of spontaneous cortical patterns, that is, generated endogenously and that may reflect various aspects of cortical function. For this purpose, we will perform an experiment on healthy subjects, who will be submitted to the pedaling movement, performed on a horizontal ergometric bicycle in two different conditions: with the presence of visual stimulation and with the reduction of visual stimulation. In addition, the subject will also go through a resting step so that we can compare the cortical patterns that arise during pedaling with the resting step. This pedaling movement will be performed at a fixed cadence of approximately 40 pedals per minute. The sample will be composed of 30 undergraduate students of the Federal University of Rio Grande do Norte (UFRN), of both sexes. Hopefully, our results will provide further insights into the neurophysiological mechanisms related to pedaling. Thus, we expect bicycle use to become a more efficient tool for the treatment of the reduction of motor and non-motor symptoms in patients with Parkinson's disease.

MEMBROS DA BANCA:
Interno - 1696755 - BRUNO LOBAO SOARES
Presidente - 1216466 - JOHN FONTENELE ARAUJO