Banca de DEFESA: Eunice Dias da Rocha Rodrigues

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : Eunice Dias da Rocha Rodrigues
DATE: 01/08/2022
TIME: 08:30
LOCAL: Plataforma Microsoft Teams
TITLE:

Effects of tDCS on rhythmic-musical perception and production in elderly individuals with musical training: a randomized, controlled, double-blind study

KEY WORDS:

musical rhythm, tDCS, executive function, sensorimotor synchronization in the elderly

PAGES: 100
BIG AREA: Ciências da Saúde
AREA: Medicina
SUMMARY:

Music can be considered one of the most complex and multi-domain stimuli for the brain. Among the elements that constitute music, rhythm is a central and indispensable structure, as it orders the movement of musical patterns in time and provides support to other musical structures. Studies using neuromodulation techniques such as transcranial direct current stimulation (tDCS) have demonstrated changes in perceptual, cognitive and behavioral functions. Studies with musicians indicate that musical performance can be improved with the application of tDCS on regions such as the motor area and cerebellum. It is also inferred that tDCS may help to reduce the effects of age on cognition and brain activity. Considering these aspects, the objective of the present study was to investigate the effects of tDCS on the perception and rhythmic-musical production in elderly people with musical training. The study included 48 elderly people aged between 60 and 86 years, divided into two groups, 25 with musical training and 23 without musical training. Of the participants with musical training, 10 (40%) underwent stimulation by anodic tDCS in the cerebellum and 15 (60%) in the motor area (M1). Among the participants without musical training, 10 (43.48%) received stimulation in the cerebellar area and 13 (56.52%) in the motor area. The instrument used to identify the rhythmic nuances of the research subjects was the H-BAT test (Harward Beat Assessment Test). The following instruments were used to verify executive functions: MoCA, STROOP test, CANTAB battery tests - Cambridge Neuropsychological Test Automated Battery: MOT (Motor Screening Task) SWN (Spatial Working Memory), PAL (Paired Associates Learning). The SEQTAP (Sequential Finger Tapping Task) was used to track motor capacity/performance. The STROOP, SEQTAP and H-BAT tests were performed in two sessions, separated by a period of one week. Within each session, a pre and post-tDCS test of all tests was performed, with the exception of the MoCA, MOT, SWM and PAL tests. The tests were performed before and after stimulation by tDCS, applied for 20 minutes in the cerebellum and in the left motor area (M1). The results of the study revealed, in relation to executive functions, a mild cognitive impairment in most of the sample. Few benefits of tDCS were found in cognitive tests. Significant differences were concentrated in the group of individuals without musical training. Stimulation in the motor area apparently produced more significant differences compared to the cerebellar area. Regarding sensorimotor synchronization, the results suggest that tDCS produced a significant effect on the consistency and accuracy of synchronization rates verified from the MTT test, both for individuals with training and for participants without musical training. The possible effects were verified mainly in the motor area (M1). Regarding the rhythmic-musical perception, probable effects of stimulation by tDCS were observed in the two stimulated areas, and the effects resulting from cerebellar stimulation were mainly concentrated among participants without musical training. In comparison with the cerebellum, the motor area showed more satisfactory results from neuromodulation. Finally, regarding the learning of the motor typing task, the findings related to the SEQTAP test, the probable significant effects were verified mainly in individuals with musical training, with greater effect of stimulation in the motor area (M1). Future research with longitudinal profiles may represent an important format to increase data regarding the effects of stimulation by tDCS in the motor areas (M1) and cerebellum on the perception and rhythmic-musical production of elderly individuals.

BANKING MEMBERS:
Presidente - 1122557 - MARIA CLOTILDE HENRIQUES TAVARES
Interno - 1225317 - EDGAR MERCHAN HAMANN
Externo à Instituição - JOAQUIM PEREIRA BRASIL NETO
Externa à Instituição - TEREZA RAQUEL ALCÂNTARA
Externa à Instituição - THENILLE BRAUN JANZEN