Banca de QUALIFICAÇÃO: MAERCIO MAIA ALVES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : MAERCIO MAIA ALVES
DATE: 16/07/2024
TIME: 14:00
LOCAL: Virtual
TITLE:

Emotions elicited by dance: a replication study with functional near-infrared spectroscopy and transcranial magnetic stimulation

PAGES: 40
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

Understanding the neural underpinnings of aesthetic experiences, particularly in music and dance, remains a complex yet compelling area of research. Previous neuroimaging studies suggest the involvement of the right posterior parietal cortex (rPPC) in emotion perception judgments, but methodological limitations call some results into question. This study aimed to replicate the original findings through two different experiments: (1) using Functional Near-Infrared Spectroscopy (fNIRS) as the neuroimaging modality and (2) applying continuous theta burst stimulation (cTBS) over the rPPC. Eighteen participants were exposed to a video of a continuous contemporary dance sequence divided into 30-second blocks, each paired with one of three randomly assigned auditory conditions: classical music, techno music, and human breathing sounds. An emotion judgment rating task was included in both experiments, utilizing a vertical digital scale ranging from most negative to most positive emotion valence, visible alongside the video stimuli. Participants continuously rated their emotional experiences using the mouse. In experiment one, hemodynamic responses in the bilateral dorsolateral prefrontal and right parietal cortices were measured while participants engaged in emotion perception rating tasks. We examined the influence of the three auditory stimuli on emotion perception during a video-based dance performance, both in passive observation and during the emotion judgment task. In experiment two, cTBS was randomly applied over the rPPC and the vertex before the same task, with a short interval between them. We assessed the possible influence of stimulation sites on the emotion judgment task. Results from experiment one revealed significant activation in the frontoparietal network during aesthetic judgments, indicating robust cognitive and emotional processing. Differences among auditory stimuli were particularly evident in channels over the right posterior parietal and bilateral dorsolateral prefrontal cortices (p < 0.05), with pronounced distinctions in deoxyhemoglobin activity in both areas during the judgment process. Results from experiment two showed more positive judgments across all auditory conditions, with significant differences for classical stimuli. Additionally, the order’s stimulation site seems crucial for the responses, maybe characterizing carry-over effects that are not fully understood in cTBS paradigms. These findings underscore the critical role of the frontoparietal network in mediating aesthetic experiences involving music and dance, highlighting its importance in processing emotions and subjectively evaluating artistic stimuli. This study enhances our understanding of the neural mechanisms underlying aesthetic perception and elucidates the intricate interplay between cognitive and emotional processes in the context of artistic appreciation.

COMMITTEE MEMBERS:
Presidente - Interno ao Programa - 2139904 - CLAUDINEI EDUARDO BIAZOLI JUNIOR
Membro Titular - Examinador(a) Interno ao Programa - 1640243 - ALEXANDRE HIDEKI OKANO
Membro Titular - Examinador(a) Externo à Instituição - ANA PAULA PORT LOURENÇO
Membro Suplente - Examinador(a) Interno ao Programa - 1674604 - YOSSI ZANA