Suppressing Systemic Interference in fNIRS Monitoring of the Hemodynamic Cortical Response to Motor Execution and Imagery

Frontiers in Human Neuroscience

Jun Li¹  Lantian Gao¹  Shijing Wu¹  Sailing He¹  Changshui Chen² 

[1] Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Center for Optical and Electromagnetic Research, South China Academy of Advanced Optoelectronics, South China Normal University (SCNU), Guangzhou, China;School of Information and Optoelectronic Science and Engineering, South China Normal University (SCNU), Guangzhou, China;

关键词: fNIRS;    motor execution;    motor imagery;    systemic physiological interference;    data preprocessing algorithm;   

DOI  :  10.3389/fnhum.2018.00085

来源: DOAJ

【 摘 要 】

Hemodynamic response to motor execution (ME) and motor imagery (MI) was investigated using functional near-infrared spectroscopy (fNIRS). We used a 31 channel fNIRS system which allows non-invasive monitoring of cerebral oxygenation changes induced by cortical activation. Sixteen healthy subjects (mean-age 24.5 yeas) were recruited and the changes in concentration of hemoglobin were examined during right and left hand finger tapping tasks and kinesthetic MI. To suppress the systemic physiological interference, we developed a preprocessing procedure which prevents over-activated reporting in NIRS-SPM. In the condition of ME, more activation was observed in the anterior part of the motor cortex including the pre-motor and supplementary motor area (pre-motor and SMA), primary motor cortex (M1) and somatosensory motor cortex (SMC; t(15) > 2.27), however, in the condition of MI, more activation was found in the posterior part of motor cortex including SMC (t(15) > 1.81), which is in line with previous observations with functional magnetic resonance imaging (fMRI).

【 授权许可】

Unknown