Banca de DEFESA: MATEUS GONÇALVES NOGUEIRA DOS SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MATEUS GONÇALVES NOGUEIRA DOS SANTOS
DATA : 06/02/2020
HORA: 13:00
LOCAL: sala S17, Térreo, Bloco Delta, Campus SBC da Fundação Universidade Federal do ABC, localizada na Alameda da Universidade, s/n, Bairro Anchieta - São Bernardo do Campo, SP.
TÍTULO:

Neural correlates of sustained attention: a fNIRS study

PÁGINAS: 50
GRANDE ÁREA: Outra
ÁREA: Multidisciplinar
RESUMO:

Attention is a basic human function underlying every other cognitive process. Its neural correlates have been studied with the use of tools such as electroencephalography and functional magnetic resonance (fMRI). Yet, those techniques do not allow for tracking attention variation on naturalistic settings. Functional near infrared spectroscopy (fNIRS) is a promising alternative on this matter. The present work aimed to investigate the suitability of fNIRS as a tool to track attention variation. We evaluated if there are differences on neurophysiological activity measured by fNIRS between attentive and inattentive conditions. On the first study we compared differences on hemodynamic responses to stimuli between conditions as shown in activation maps. On the second study we compared differences on pre stimulus activity between conditions as shown in oxy and deoxyhemoglobin concentration variation.

Regarding brain responses to stimuli, we found that during attentive conditions there are more areas showing activation than during inattentive condition. Specifically, inferior parietal region shows more activation during attentive condition. Regarding pre stimulus activity, we found that higher levels of oxyhemoglobin concentration changes before attentive responses when compared to inattentive responses on medial prefrontal cortex and inferior parietal cortex. Our study brings evidence showing it is possible to differentiate attentional state with fNIRS. It also allows for replication of fMRI data, indicating relationship between frontoparietal activity and attention. Beyond the possibility of application on naturalistic setting, our data point out that fNIRS is an important tool for assessing temporal characteristics of hemodynamic response.

MEMBROS DA BANCA:
Presidente - Interno ao Programa - 1653406 - ABRAHAO FONTES BAPTISTA
Membro Titular - Examinador(a) Interno ao Programa - 1714632 - PETER MAURICE ERNA CLAESSENS
Membro Titular - Examinador(a) Externo à Instituição - RICKSON COELHO DE MESQUITA - UNICAMP
Membro Suplente - Examinador(a) Interno ao Programa - 1954058 - MARCELO SALVADOR CAETANO
Membro Suplente - Examinador(a) Externo à Instituição - PAULO BOGGIO - UPM