TY - GEN
T1 - Implementation of fNIRS for monitoring levels of expertise and mental workload
AU - Bunce, Scott C.
AU - Izzetoglu, Kurtulus
AU - Ayaz, Hasan
AU - Shewokis, Patricia
AU - Izzetoglu, Meltem
AU - Pourrezaei, Kambiz
AU - Onaral, Banu
PY - 2011
Y1 - 2011
N2 - An accurate measure of mental workload would help improve operational safety and efficacy in many environments that involve multitasking or sustained vigilance. The current study utilized functional near-infrared spectroscopy (fNIRs) to examine the relationship of the hemodynamic response in dorsolateral prefrontal cortex (DLPFC) as it related to mental workload, level of expertise, and task performance. DLPFC responses were monitored with fNIRs while 8 participants (4 with high practice, 4 novices) completed a quasirealistic computerized Warship Commander Task with various levels of difficulty. The results show that greater expertise was associated with relatively lower oxygenation (less neural activity) at low to moderate levels of taskload, but higher oxygenation and better performance at high levels of taskload. For novices, oxygenation was higher at moderate levels of taskload, but dropped precipitously at higher levels of taskload, along with performance, consistent with disengaging from the task. Results are interpreted within a "scaffoldingstorage" framework.
AB - An accurate measure of mental workload would help improve operational safety and efficacy in many environments that involve multitasking or sustained vigilance. The current study utilized functional near-infrared spectroscopy (fNIRs) to examine the relationship of the hemodynamic response in dorsolateral prefrontal cortex (DLPFC) as it related to mental workload, level of expertise, and task performance. DLPFC responses were monitored with fNIRs while 8 participants (4 with high practice, 4 novices) completed a quasirealistic computerized Warship Commander Task with various levels of difficulty. The results show that greater expertise was associated with relatively lower oxygenation (less neural activity) at low to moderate levels of taskload, but higher oxygenation and better performance at high levels of taskload. For novices, oxygenation was higher at moderate levels of taskload, but dropped precipitously at higher levels of taskload, along with performance, consistent with disengaging from the task. Results are interpreted within a "scaffoldingstorage" framework.
UR - http://www.scopus.com/inward/record.url?scp=79960323571&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960323571&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-21852-1_2
DO - 10.1007/978-3-642-21852-1_2
M3 - Conference contribution
AN - SCOPUS:79960323571
SN - 9783642218514
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 13
EP - 22
BT - Foundations of Augmented Cognition
T2 - 6th International Conference on Foundations of Augmented Cognition, FAC 2011, Held as Part of HCI International 2011
Y2 - 9 July 2011 through 14 July 2011
ER -