Scalable, modular continuous wave functional near-infrared spectroscopy system (Spotlight).
J Biomed Opt
; 28(6): 065003, 2023 06.
Article
em En
| MEDLINE
| ID: mdl-37325190
ABSTRACT
Significance:
We present a fiberless, portable, and modular continuous wave-functional near-infrared spectroscopy system, Spotlight, consisting of multiple palm-sized modules-each containing high-density light-emitting diode and silicon photomultiplier detector arrays embedded in a flexible membrane that facilitates optode coupling to scalp curvature.Aim:
Spotlight's goal is to be a more portable, accessible, and powerful functional near-infrared spectroscopy (fNIRS) device for neuroscience and brain-computer interface (BCI) applications. We hope that the Spotlight designs we share here can spur more advances in fNIRS technology and better enable future non-invasive neuroscience and BCI research.Approach:
We report sensor characteristics in system validation on phantoms and motor cortical hemodynamic responses in a human finger-tapping experiment, where subjects wore custom 3D-printed caps with two sensor modules.Results:
The task conditions can be decoded offline with a median accuracy of 69.6%, reaching 94.7% for the best subject, and at a comparable accuracy in real time for a subset of subjects. We quantified how well the custom caps fitted to each subject and observed that better fit leads to more observed task-dependent hemodynamic response and better decoding accuracy.Conclusions:
The advances presented here should serve to make fNIRS more accessible for BCI applications.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Espectroscopia de Luz Próxima ao Infravermelho
/
Hemodinâmica
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article