?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F8861%2F&rft.title=Investigation+of+Unintentional+Movement+in+People+with+Cerebral+Palsy+to+Improve+Computer+Target+Aquisition&rft.creator=Sibenaller%2C+Sara+Marie&rft.description=People+with+Cerebral+Palsy+(CP)+have+difficulty+using+computer+pointing+devices+due+to+unintentional+movement+in+their+upper+extremities.+Fifty+percent+of+people+with+CP+have+impaired+arm-hand+function+which+limits+their+ability+to+interface+with+pointing+devices+and+effectively+control+cursor+movement+on+the+computer+screen.+This+thesis+involves+two+studies+which+utilize+an+Isometric+Joystick+in+order+to+access+the+computer+and+complete+target+acquisition+tasks.+The+first+study+titled+%22Quantification+of+Cursor+Movement+of+People+with+Athetoid+and+Spastic+Cerebral+Palsy+to+Improve+Target+Acquisition%2C%22+aims+to+guide+real-time+digital+filter+development+for+people+with+athetoid+and+spastic+CP+for+target+acquisition+tasks.+By+investigating+the+cursor+movement+measures+throughout+the+target+acquisition+trajectory+we+gained+a+better+insight+as+to+when+and+how+to+compensate+for+unintentional+movement+in+people+with+CP.+Results+showed+that+both+people+with+athetoid+CP+and+spastic+CP+have+more+difficulty+hovering+over+the+target+than+they+did+moving+to+the+target%2C+indicating+that+filter+development+should+focus+on+the+hovering+portion+of+the+target+acquisition+task+in+order+to+improve+target+acquisition+time.+The+second+study+titled+%22Customized+Control+for+People+with+Athetosis+and+Dystonia+to+Improve+Computer+Access%2C%22+aims+to+develop+a+method+to+prescribe+appropriate+switch%2Fscanning+control+for+people+with+athetosis+and+dystonia+as+well+as+to+determine+if+customized+switch%2Fscanning+control+is+more+effective+in+completing+icon+selection+tasks+than+the+proportional+isometric+control.+Results+of+this+study+suggest+that+switch%2Fscanning+control+could+be+useful+in+moving+on+the+most+direct+path+to+the+target+as+shown+by+a+significantly+smaller+percent+distance+error+for+customized+control+as+compared+to+proportional+isometric+control+(F(1%2C6)+%3D+361.2%2C+p+%3C+0.01).&rft.date=2008-09-08&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F8861%2F1%2FSibenallerThesis2008.pdf&rft.identifier=++Sibenaller%2C+Sara+Marie++(2008)+Investigation+of+Unintentional+Movement+in+People+with+Cerebral+Palsy+to+Improve+Computer+Target+Aquisition.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++