The effect of aging on brain signal variability in visual-audio dual tasks
10.16066/j.1672-7002.2025.02.003
- VernacularTitle:衰老对视听双任务大脑信号变异性的影响
- Author:
Nuonan KOU
1
;
Songjian WANG
;
Yi LIU
;
Xiaoying ZHAO
;
Tong LIU
;
Yuan WANG
;
Shuo WANG
Author Information
1. 首都医科大学附属北京同仁医院耳鼻咽喉头颈外科,耳鼻咽喉头颈科学教育部重点实验室(首都医科大学),北京市耳鼻咽喉科研究所,北京 100730
- Keywords:
Aging;
Oxyhemoglobins;
selective attention;
brain signal variability;
functional near-infrared spectroscopy
- From:
Chinese Archives of Otolaryngology-Head and Neck Surgery
2025;32(2):76-81
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE Exploring the specific changes in brain signal variability during healthy aging using functional near-infrared spectroscopy technology.METHODS Twenty-eight young adults and 30 elderly adults were included,and functional near-infrared spectroscopy was used to record the changes in brain blood oxygen and calculate the brain signal variability during the execution of visual-audio dual tasks.RESULTS The brain signal variability of the elderly group was significantly reduced when performing visual-audio dual tasks,especially in the bilateral dorsolateral prefrontal cortex,right Broca,bilateral primary somatosensory cortex,bilateral Wernicke area,bilateral frontopolar area,bilateral primary motor cortex,bilateral somatosensory association cortex,bilateral orbitofrontal area,bilateral pre-motor and supplementary motor cortex.The brain signal variability in the left primary somatosensory cortex(r=-0.385,P=0.043)and right primary somatosensory cortex(r=-0.386,P=0.042)of young adults was negatively correlated with visual reaction time;The brain signal variability in the right somatosensory association cortex(r=-0.371,P=0.044),left pre-motor and supplementary motor cortex(r=-0.393,P=0.032)of elderly adults was negatively correlated with visual reaction time.CONCLUSION Elderly individuals exhibit a significant reduction in neural signal variability within the prefrontal cortex and sensory related cortex,resulting in diminished neural dynamic adaptability that compromises behavioral performance during visual-audio dual tasks.
