中文|CAS

logo
banner

Journals & Publications

Journals Publications Papers

Papers

Correlation between electrical and hemodynamic responses during visual stimulation with graded contrasts
Dec 16, 2016Author：
PrintText Size A A

Title: Correlation between electrical and hemodynamic responses during visual stimulation with graded contrasts
Authors: Si, JN; Zhang, X; Li, YJ; Zhang, YJ; Zuo, NM; Jiang, TZ
Author Full Names: Si, Juanning; Zhang, Xin; Li, Yuejun; Zhang, Yujin; Zuo, Nianming; Jiang, Tianzi
Source: JOURNAL OF BIOMEDICAL OPTICS, 21 (9):10.1117/1.JBO.21.9.091315 SEP 2016
Language: English
Abstract: Brain functional activity involves complex cellular, metabolic, and vascular chain reactions, making it difficult to comprehend. Electroencephalography (EEG) and functional near infrared spectroscopy (fNIRS) have been combined into a multimodal neuroimaging method that captures both electrophysiological and hemo-dynamic information to explore the spatiotemporal characteristics of brain activity. Because of the significance of visually evoked functional activity in clinical applications, numerous studies have explored the amplitude of the visual evoked potential (VEP) to clarify its relationship with the hemodynamic response. However, relatively few studies have investigated the influence of latency, which has been frequently used to diagnose visual diseases, on the hemodynamic response. Moreover, because the latency and the amplitude of VEPs have different roles in coding visual information, investigating the relationship between latency and the hemodynamic response should be helpful. In this study, checkerboard reversal tasks with graded contrasts were used to evoke visual functional activity. Both EEG and fNIRS were employed to investigate the relationship between neuronal electrophysiological activities and the hemodynamic responses. The VEP amplitudes were linearly correlated with the hemodynamic response, but the VEP latency showed a negative linear correlation with the hemodynamic response. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
ISSN: 1083-3668
eISSN: 1560-2281
Article Number: 091315
IDS Number: EC5YH
Unique ID: WOS:000388
*Click Here to View Full Record