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What Does Electroencephalography Coherence Tell Us about Memory Encoding in Adolescents at High Risk of Suicide?
Yujin Kim1, Jeongeun Kwon2, Atcharat Yongtawee2
1Exercise Rehabilitation Convergence Institute, Gachon University, Incheon, Republic of Korea.
Background:
Suicide is known to be closely related to depression, which is accompanied by cognitive decline.
Objective:
This study examined whether memory performance and cortical networking differ between high suicide risk and control groups depending on task difficulty.
Methods:
The participants were 28 high school students consisting of 14 suicide risk and 14 control subjects. Real-time electroencephalography signals were collected during a working memory task. Inter- and intrahemispheric coherences were analyzed.
Results:
Higher cortical networking during memory encoding was found in suicide risk adolescents compared to the control group. An increase in task difficulty heightened interhemispheric coherence.
Conclusions:
Higher cortical networking in suicide risk adolescents seems to reflect activation of compensatory mechanisms in an attempt to minimize behavioral decline.
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