Analysis of Differences in Cortical Activation Areas and Functional Connectivity During Speech in Young People Under Different Cognitive Loads
10.3969/j.issn.1006-7299.2025.01.008
- VernacularTitle:不同认知负荷下年轻人言语过程中大脑皮质激活区域和功能连接性的差异分析
- Author:
Zihui JIANG
1
;
Xiuen CHEN
;
Jiejiao ZHENG
;
Yongjun ZHENG
;
Yunyun ZHANG
;
Xiangyun LIU
;
Liwen QIU
;
Chenchen ZHANG
;
Zhichao NING
Author Information
1. 复旦大学附属华东医院(上海 200040);上海体育大学
- Publication Type:Journal Article
- Keywords:
Cognitive load;
Functional near-infrared spectroscopy(fNIRS);
Cortical activation;
Func-tional connectivity
- From:
Journal of Audiology and Speech Pathology
2025;33(1):40-45
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the differences in cortical activation and functional connectivity during speech under different cognitive loads in young individuals.Methods Twenty-one participants(mean age 21.9±1.33 years)were instructed to read short sentences embedded with color words under both congruent(where the color words matched the font color)and incongruent(where the color words did not match the font color)condi-tions.The color words required reading the font color instead of the word itself.Functional near-infrared spectros-copy(fNIRS)was utilized to analyze differences in cortical activation(changes in HbO concentration)and functional connectivity(Pearson correlation of HbO between brain regions)in the dorsolateral prefrontal cortex(DLPFC)and supplementary motor area(SMA)bilaterally.Results The fNIRS results revealed significant increase in HbO con-centration changes in the RDLPFC(t=3.4,P=0.003),LDLPFC(t=2.58,P=0.019),RSMA(t=3.59,P=0.002),and LSMA(t=4.06,P=0.001)under the incongruent condition compared to the congruent condition.Additionally,there was a significant enhancement in the correlation between RDLPFC and LDLPFC(t=2.44,P=0.025).However,the differences in correlation between left and right SMA,as well as between SMA and DLPFC,were not statistically significant(P＞0.05).Conclusion These findings suggest that during speech under incongru-ent conditions,increased cognitive load leads to elevated cortical activation in the DLPFC and SMA,along with in-creased functional connectivity between the left and right DLPFC.
