Single-trial reconstruction of finger-pinch forces from human motor-cortical activation measured by near-infrared spectroscopy (NIRS)

Assessment of the cerebral cortex during motor task behaviours in adults: A systematic review of functional near infrared spectroscopy (fNIRS) studies

“…However, typical patterns of haemodynamic change have also been described over the ipsilateral SMC. For example, in the study by Colier et al, 1997;Durduran et al, 2004;Franceschini et al, 2003Franceschini et al, , 2006Hirth et al, 1996Hirth et al, , 1997Hoge et al, 2005;Horovitz et al, 2003;Huppert et al, 2006;Kleinschmidt et al, 1996;Li et al, 2005;Mackert et al, 2008;Maki et al, 1995;Nambu et al, 2009;Obrig et Shibuya et al, 2006; Nambu et al, 2009Obrig et al, 1996aObrig et al, ,199b, 199, 2000Shibuya et al, 2006;Watanabe et al, al., 1996aWatanabe et al, , 1996bWatanabe et al, , 997, 2000Sander et al, 2007b Hand grasping / clenching Obrig et al (1996a), the cortical oxygenation response to ipsilateral finger opposition was found to be half that of contralateral stimulation (2.27 μM cm versus 4.98 μM cm respectively). More recent data suggests that the ipsilateral oxygenation response is delayed versus the contralateral response (Shibuya et al, 2008) and that responses from the contralateral M1 (versus ipsilateral) are the most valuable for motor force reconstruction (Nambu et al, 2009).…”

Movement-related cortical activation with voluntary pinch task: simultaneous monitoring of near-infrared spectroscopy signals and movement-related cortical potentials

“…1,2 Recently, several researchers [3][4][5] have assessed whether NIRS can detect the actual cortical hemodynamic changes associated with neural activation in response to tasks by using NIRS in combination with other methods, such as magnetoencephalography (MEG), transcranial magnetic stimulation (TMS), and electroencephalograms (EEG). Although the results of these studies showed good concordance between NIRS data and those of other modalities, most did not show either short-time or intrinsic (without stimulation) neurohemodynamic processes.…”

Partial Least Squares-discriminant Analysis for the Prediction of Hemodynamic Changes Using Near Infrared Spectroscopy

“…It is well known that the strength of the finger tapping significantly affects the degree of the hemodynamic changes [31]. Therefore, each model used for prediction of the participant's intention using NIRS has to be individually calibrated.…”