TY - GEN
T1 - Assessment of cognitive neural correlates for a functional near infrared-based brain computer interface system
AU - Ayaz, Hasan
AU - Shewokis, Patricia A.
AU - Bunce, Scott
AU - Schultheis, Maria
AU - Onaral, Banu
PY - 2009
Y1 - 2009
N2 - Functional Near Infrared Spectroscopy (fNIR) is a promising brain imaging technology that relies on optical techniques to detect changes of hemodynamic responses within the prefrontal cortex in response to sensory, motor, or cognitive activation. fNIR is safe, non-invasive, affordable, and highly portable. The objective of this study is to determine if biomarkers of neural activity generated by intentional cognitive activity, as measured by fNIR, can be used to communicate directly from the brain to a computer. A bar-size-control task based on a closed-loop system was designed and tested with 5 healthy subjects across two days. Comparisons of the average task and rest period oxygenation changes are significantly different (p<0.01). The average task completion time (reaching +90%) decreases with practice: day1 (mean 52.3 sec) and day2 (mean 39.1 sec). These preliminary results suggest that a closed-loop fNIR-based BCI can allow for a human-computer interaction with a mind switch task.
AB - Functional Near Infrared Spectroscopy (fNIR) is a promising brain imaging technology that relies on optical techniques to detect changes of hemodynamic responses within the prefrontal cortex in response to sensory, motor, or cognitive activation. fNIR is safe, non-invasive, affordable, and highly portable. The objective of this study is to determine if biomarkers of neural activity generated by intentional cognitive activity, as measured by fNIR, can be used to communicate directly from the brain to a computer. A bar-size-control task based on a closed-loop system was designed and tested with 5 healthy subjects across two days. Comparisons of the average task and rest period oxygenation changes are significantly different (p<0.01). The average task completion time (reaching +90%) decreases with practice: day1 (mean 52.3 sec) and day2 (mean 39.1 sec). These preliminary results suggest that a closed-loop fNIR-based BCI can allow for a human-computer interaction with a mind switch task.
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U2 - 10.1007/978-3-642-02812-0_79
DO - 10.1007/978-3-642-02812-0_79
M3 - Conference contribution
AN - SCOPUS:77951993822
SN - 364202811X
SN - 9783642028113
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 699
EP - 708
BT - Foundations of Augmented Cognition
T2 - 5th International Conference on Foundations of Augmented Cognition, FAC 2009, Held as Part of HCI International 2009
Y2 - 19 July 2009 through 24 July 2009
ER -
