“
TL;DR
In a single-session neurofeedback study, 30 adults learned to increase DL-PFC activity using fNIRS, with success rates depending on signal filtering and correction for physiological noise; half reported a subjective feeling of control.
PLOS ONE · 11 authors, 4 centres
This summary was generated by AI from a single paper. It has not been reviewed by a clinician and is not clinical advice. Verify against the source before acting on it.
In a single-session neurofeedback study, 30 adults learned to increase DL-PFC activity using fNIRS, with success rates depending on signal filtering and correction for physiological noise; half reported a subjective feeling of control.
This study investigated the feasibility of a single-session functional near-infrared spectroscopy (fNIRS) neurofeedback intervention targeting the bilateral dorsolateral prefrontal cortex (DL-PFC) in 30 human volunteers. Participants performed 15 trials to increase oxy-hemoglobin levels. The central result was that 18 participants (60%) showed successful DL-PFC activation without short-channel correction, but this number dropped to 13 participants (43%) when correcting for extra-cerebral physiological noise. Half the participants reported a subjective feeling of control, which correlated with objective activation. The study also found that a narrower band-pass filter (0.01–0.09 Hz) was more specific for cortical signals than a wider filter (0.01–0.2 Hz). Limitations include the single-session design, lack of a control group, and the small number of trials, which may have limited strategy exploration. The findings highlight the critical importance of accounting for physiological confounds in fNIRS neurofeedback to ensure signal specificity.