Studying hemispheric lateralization during a Stroop task by near-infrared spectroscopy

被引：1

作者：

Zhang, Lei ^{[1
]}

Sun, Jinyan ^{[1
]}

Sun, Bailei ^{[1
]}

Luo, Qingming ^{[1
]}

Gong, Hui ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Britton Chance Ctr Biomed Photon, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

来源：

OPTICAL TECHNIQUES IN NEUROSURGERY, NEUROPHOTONICS, AND OPTOGENETICS | 2014年 / 8928卷

关键词：

near-infrared spectroscopy; Stroop task; hemispheric lateralization; functional connectivity; COHERENCE; CONFLICT;

D O I：

10.1117/12.2039712

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

We measured hemodynamic activity of the prefrontal cortex (PFC) during a Chinese color-word matching Stroop task using a homemade continuous-wave NIRS system. Two probes were placed separately over the left and the right PFC. Wavelet transform coherence (WTC) analysis was employed to calculate coherences between all channels of the same probe pairwise to obtain the intrahemispheric functional connectivity for each side of the PFC. The intrahemispheric functional connectivities in both sides of PFC were stronger during the incongruent task compared to that of the neutral task, but only the left intrahemispheric functional connectivity showed a significant Stroop effect. In addition to the Stroop effect, for the incongruent or the neutral task, there was also a leftward lateralization. The results indicate that, compared with traditional activation, NIRS-based connectivity is more sensitive for identifying hemispheric lateralization.

引用

页数：6

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