Temporal Haemodynamic Measures of Mood and Work Load Effects on Working Memory Performance

Neuroimaging studies show that mood affects working memory performance (WMP) through changes in haemodynamic activity (HA) in the prefrontal cortex (PFC). However, it is unknown how WMP and HA is modulated by increasing working memory load (WML) under different mood states. We investigate the intera...

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Bibliographic Details
Published in:	2018 International Conference on Intelligent and Advanced System (ICIAS) pp. 1 - 5
Main Authors:	Feng, Ying Xing, Ung, Wei Chun, Dass, Sarat Chandra, Mohd Hani, Ahmad Fadzil, Tang, Tong Boon, Wei Ho, Eric Tatt
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-08-2018
Subjects:	Blood flow fNIRS Functional magnetic resonance imaging mental stress Modulation Mood n-back task neuroergonomics Neuroimaging optical topography Stress Task analysis working memory
Online Access:	Get full text
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Summary:	Neuroimaging studies show that mood affects working memory performance (WMP) through changes in haemodynamic activity (HA) in the prefrontal cortex (PFC). However, it is unknown how WMP and HA is modulated by increasing working memory load (WML) under different mood states. We investigate the interactive effects of mood state (psychological factor) and WML (difficulty factor) on WMP and HA with N-back task using functional near-infrared spectroscopy (fNIRS) neuroimaging of the PFC in 31 healthy subjects (HS). Our study reveals distinct mood-dependent modulations of HA with increasing WML which correlate with decreasing WMP. The influence of mood on performance is greatest at high WML.
DOI:	10.1109/ICIAS.2018.8540612