title: Evaluation of a modified Fitts law brain-computer interface target acquisition task in able and motor disabled individuals.
abstract: A brain-computer interface (BCI) is a communication system that takes recorded brain signals and translates them into real-time actions, in this case movement of a cursor on a computer screen. This work applied Fitts' law to the evaluation of performance on a target acquisition task during sensorimotor rhythm-based BCI training. Fitts' law, which has been used as a predictor of movement time in studies of human movement, was used here to determine the information transfer rate, which was based on target acquisition time and target difficulty. The information transfer rate was used to make comparisons between control modalities and subject groups on the same task. Data were analyzed from eight able-bodied and five motor disabled participants who wore an electrode cap that recorded and translated their electroencephalogram (EEG) signals into computer cursor movements. Direct comparisons were made between able-bodied and disabled subjects, and between EEG and joystick cursor control in able-bodied subjects. Fitts' law aptly described the relationship between movement time and index of difficulty for each task movement direction when evaluated separately and averaged together. This study showed that Fitts' law can be successfully applied to computer cursor movement controlled by neural signals.
authors.affiliation: Department of Biomedical Engineering, University of Wisconsin-Madison, 53706, USA.
authors.forename: E A
authors.initials: EA
authors.lastname: Felton
authors.forename: R G
authors.initials: RG
authors.lastname: Radwin
authors.forename: J A
authors.initials: JA
authors.lastname: Wilson
authors.forename: J C
authors.initials: JC
authors.lastname: Williams
mesh_terms: D000328:Adult; D000368:Aged; D000465:Algorithms; D001921:Brain / Q000503:physiopathology*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement; D009069:Movement Disorders / Q000175:diagnosis / Q000503:physiopathology*; D011597:Psychomotor Performance; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
references.citation: Neuropsychologia. 2007 Mar 2;45(4):853-9
references.pmid: 17046033
references.citation: J Neurosurg. 2007 Mar;106(3):495-500
references.pmid: 17367076
references.citation: Nature. 2001 Oct 25;413(6858):793
references.pmid: 11677592
references.citation: Brain Topogr. 2000 Spring;12(3):177-86
references.pmid: 10791681
references.citation: Clin Neurophysiol. 2002 Jun;113(6):767-91
references.pmid: 12048038
references.citation: IEEE Trans Biomed Eng. 2004 Jun;51(6):1034-43
references.pmid: 15188875
references.citation: Brain Cogn. 2003 Apr;51(3):326-36
references.pmid: 12727187
references.citation: J Neurosci. 1996 Dec 1;16(23):7688-98
references.pmid: 8922425
references.citation: Behav Brain Res. 1996 May;77(1-2):45-52
references.pmid: 8762158
references.citation: J Exp Psychol. 1954 Jun;47(6):381-91
references.pmid: 13174710
references.citation: J Clin Neurophysiol. 1991 Apr;8(2):200-2
references.pmid: 2050819
references.citation: Proc Natl Acad Sci U S A. 2004 Dec 21;101(51):17849-54
references.pmid: 15585584
references.citation: Science. 1996 Sep 13;273(5281):1564-8
references.pmid: 8703221
references.citation: Neuroreport. 1995 May 9;6(7):997-1001
references.pmid: 7632907
references.citation: Brain Res Cogn Brain Res. 2005 Dec;25(3):668-77
references.pmid: 16236487
references.citation: Behav Brain Res. 1995 Dec 14;72(1-2):127-34
references.pmid: 8788865
references.citation: Nature. 2006 Jul 13;442(7099):164-71
references.pmid: 16838014
references.citation: IEEE Trans Rehabil Eng. 2000 Jun;8(2):198-202
references.pmid: 10896186
references.citation: NeuroRehabilitation. 1997;9(1):71-87
references.pmid: 24526092
references.citation: Neurology. 2005 May 24;64(10):1775-7
references.pmid: 15911809
references.citation: J Neurophysiol. 1992 May;67(5):1114-23
references.pmid: 1597701
references.citation: IEEE Trans Neural Syst Rehabil Eng. 2001 Jun;9(2):154-60
references.pmid: 11474968
references.citation: Hum Factors. 1990 Aug;32(4):423-38
references.pmid: 2150065
references.citation: J Mot Behav. 1985 Mar;17(1):77-95
references.pmid: 15140699
references.citation: J Neural Eng. 2004 Jun;1(2):63-71
references.pmid: 15876624
references.citation: Neuropsychologia. 1995 Jun;33(6):727-41
references.pmid: 7675164
references.citation: IEEE Trans Rehabil Eng. 1998 Mar;6(1):7-11
references.pmid: 9535518
references.citation: IEEE Trans Rehabil Eng. 2000 Jun;8(2):164-73
references.pmid: 10896178
references.citation: Neurosci Lett. 2003 Jul 17;345(2):89-92
references.pmid: 12821178