Banca de QUALIFICAÇÃO: LUANA ADALICE BORGES DE ARAUJO LIMA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LUANA ADALICE BORGES DE ARAUJO LIMA
DATE: 11/09/2023
TIME: 15:15
LOCAL: https://meet.google.com/cxs-krta-dry
TITLE:

KEY WORDS:

Menstrual cycle, motor inhibition, motor processing, go/no-go, EEG, alpha, beta, reaction time, accuracy, decision making.

PAGES: 67
BIG AREA: Ciências Biológicas
AREA: Fisiologia
SUMMARY:

There is evidence that female sex hormones influence neurotransmission in the central nervous system, affecting the quality of performance in motor tasks, highlighting the importance of inhibition and motor control in human behavior. The present study investigated whether cortical activity and behavioral measures are presented differently in menstrual cycle phases (menstrual, follicular and luteal) in 30 women during the Go/No-Go Protocol. This test includes pairs of auditory stimuli that were grouped into two general types: centered on S1 and centered on S2. In the task centered on S1, the decision is made after S1 and the motor execution/inhibition occurs after S2. In tasks centered on S2, decision-making and execution or inhibition occur only after S2. Cortical activity was recorded using electroencephalography (EEG) and alpha (8-13Hz), beta (15-30Hz) and beta 1 (15-23Hz) rhythms were analyzed for the medial frontal (Fz) and left central regions ( C3). Behavioral response analysis revealed a significant difference in reaction time and accuracy between the S1 and S2 centered protocols, but without any interaction between menstrual cycle phases. Changes in brain activity were demonstrated, with reductions in alpha and beta rhythms after the decision to proceed with the movement (go condition) and beta 1 synchronization after the decision to inhibit the movement (no-go condition). The generation of ERS beta during the initiation of movement in the medial frontal region indicates a possible control of motor inhibition and this communication seems to result from the low levels of HSFs as it occurs in the menstrual phase. Furthermore, beta and alpha oscillations in the central left region seem to be modulated by variations in sex hormones, being more pronounced in the follicular and luteal phases. This suggests a positive influence of estradiol and progesterone on the processing and execution of motor tasks. In summary, this pioneering study shows variations in motor cognition throughout the menstrual cycle in Go/No-Go tasks, which may have implications for optimizing motor performance and rehabilitation of women during the reproductive period, providing an important basis for future research. and clinical interventions.

COMMITTEE MEMBERS:
Interno - 1243905 - DRAULIO BARROS DE ARAUJO
Interna - 1871878 - KERSTIN ERIKA SCHMIDT
Presidente - 6346130 - MARIA BERNARDETE CORDEIRO DE SOUSA