Partial correlation-based functional connectivity analysis for functional near-infrared spectroscopy signals
Partial correlation-based functional connectivity analysis for functional near-infrared spectroscopy signals
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Tarih
2017-01-01
Yazarlar
Akin, Ata
Süreli Yayın başlığı
Süreli Yayın ISSN
Cilt Başlığı
Yayınevi
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
Dergi Adı
JOURNAL OF BIOMEDICAL OPTICS
Özet
A theoretical framework, a partial correlation-based functional connectivity (PC-FC) analysis to functional near-infrared spectroscopy (fNIRS) data, is proposed. This is based on generating a common background signal from a high passed version of fNIRS data averaged over all channels as the regressor in computing the PC between pairs of channels. This approach has been employed to real data collected during a Stroop task. The results show a strong significance in the global efficiency (GE) metric computed by the PC-FC analysis for neutral, congruent, and incongruent stimuli (NS, CS, IcS
GE(N) = 0.10 +/- 0.009, GE(C) = 0.11 +/- 0.01, GE(IC) = 0.13 +/- 0.015, p = 0.0073). A positive correlation (r = 0.729 and p = 0.0259) is observed between the interference of reaction times (incongruent-neutral) and interference of GE values (GE(IC)-GE(N)) computed from {[}HbO] Signals. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
GE(N) = 0.10 +/- 0.009, GE(C) = 0.11 +/- 0.01, GE(IC) = 0.13 +/- 0.015, p = 0.0073). A positive correlation (r = 0.729 and p = 0.0259) is observed between the interference of reaction times (incongruent-neutral) and interference of GE values (GE(IC)-GE(N)) computed from {[}HbO] Signals. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Açıklama
Anahtar kelimeler
functional near, infrared spectroscopy, partial correlation, functional connectivity, global efficiency, Stroop task