Poster Session 04 Program Schedule
02/15/2024
12:00 pm - 01:15 pm
Room: Majestic Complex (Posters 61-120)
Poster Session 04: Neuroimaging | Neurostimulation/Neuromodulation | Teleneuropsychology/Technology
Final Abstract #71
Assessing attentional task-related electroencephalogram signal variations by using mobile electroencephalogram technology
Moemi Matsuo, Nishikyushu University, Kanzaki, Japan
Takashi Higuchi, Osaka University of Human Sciences, Settsu, Japan
Category: Neuroimaging
Keyword 1: attention
Keyword 2: brain function
Keyword 3: electroencephalography
Objective:
In this study, we aimed to evaluate cerebral activities during attentional tasks by using mobile electroencephalography, identifying the types of attentional components and brain waves.
Participants and Methods:
We enrolled 12 healthy young adults. The attentional tasks comprised parts A and B of the Trail-Making Test. Nineteen electroencephalography electrodes were placed over various brain regions. The Wilcoxon signed-rank test was used to examine the differences in power levels between the rest and Trail-Making Test conditions.
Results:
During Trail-Making Test part A, the electroencephalography power level of the delta waves was significantly higher in the right frontal, left central, left occipital, left inferior frontal, right mid-temporal, right posterior temporal, and middle parietal areas (P<.05) than those during the resting state; that of the alpha waves was significantly lower in the left posterior temporal area (P=.006); and that of the high gamma waves was significantly lower in the left parietal (P=.05) and left occipital (P=.002) areas. During Trail-Making Test part B, the electroencephalography power level of the beta waves was significantly higher in the right frontal area (P=.041) than that during the resting state, and that of the low gamma waves was significantly higher in the left frontal pole, right frontal, and right inferior frontal areas (P<.05).
Conclusions:
During the focused attentional task, the power level of the delta waves increased and that of the alpha waves decreased, and during the alternating attentional task, those of both the beta and gamma waves increased. The delta waves were related to the whole brain, the alpha and high gamma waves to the left posterior lobe, and the beta and low gamma waves to both frontal lobes. This study contributes to the basic knowledge necessary to develop new attentional assessment methods for clinical situations.
| 
