Jul 2026· International Conference on Signal Processing and Communications· pp. 1-5· 0 citations· 15 references
Abstract
Functional near-infrared spectroscopy (fNIRS) is often considered temporally limited due to the delayed peak of the hemodynamic response. This study investigates whether meaningful, stimulus-related information can be extracted from the early post-stimulus interval (0-2.5 s) during vibrotactile stimulation. Data from 13 participants across multiple stimulation locations and frequencies were analyzed using time-locked averaging, spectral validation, and linear mixed-effects modeling. Results show that early hemodynamic responses are reproducible, stimulus-locked, and spatially specific. While mean amplitude did not significantly differentiate conditions, maximum amplitude revealed significant stimulus- and location-dependent effects, and the slope of the response captured spatial organization consistent with somatosensory mapping. Control analyses confirmed that these effects are not driven by systemic noise or stimulation artifacts. These findings demonstrate that fNIRS contains usable and physiologically meaningful information earlier than traditionally assumed, supporting its potential for rapid detection of cortical activity in real-time applications.
The aperiodic, 1/f-like component of electrophysiological activity is increasingly recognized as a meaningful feature of neural function rather than background noise. Meanwhile, many EEG studies interpret transient post-stimulus changes in oscillatory power as signatures of attention, salience, or cognitive control. Su...
T. Vanneau, M. Quiquempoix, Bradley Voytek et al.· Journal of Neuroscience· 0 citations
Abstract. Significance Most neuroimaging studies rely on group-level analyses, yet many clinical and translational applications require reliable inference at the level of individual participants. Aim We evaluated whether functional near-infrared spectroscopy (fNIRS) can detect expected speech network related activation...
Carlotta Koch, A. Abdalmalak, J. Orpella et al.· Neurophotonics· 0 citations
P300-based brain–computer interface (BCI) systems have been widely investigated for assistive communication and neurotechnology applications. However, most existing studies primarily emphasize classification performance within individual stimulation paradigms, providing limited understanding of whether electrophysiolog...
T. Akinci, Muhammad Sana Ullah· IEEE Access· 0 citations
Interbrain synchrony (IBS), also referred to as interpersonal neural synchrony (INS), has become a central construct in social neuroscience and beyond. It describes the temporal alignment of neural activity across individuals and has been studied in a range of paradigms, including sequential interactions, shared-stim...
Katarina Lodrant, D. Van de Ville, F. Scharnowski et al.· Imaging Neuroscience· 0 citations
Objective This study aimed to use functional near-infrared spectroscopy to investigate abnormalities in cortical activity and dynamic network mechanisms associated with proprioceptive processing after stroke. We integrated conventional hemodynamic features, latent-state organization, directed connectivity, and recovery...
Hui Sun, Qiu-Yuan Fu, Yi-Chen Jiang et al.· Frontiers in Neurology· 0 citations
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