Handwriting process variables discriminating mild Alzheimer's disease and mild cognitive impairment.
This study's aims were (a) to examine kinematically the handwriting process of persons with mild cognitive impairment (MCI), compared with those with mild Alzheimer's disease and healthy controls; (b) to assess the importance of these measures for the differentiation of the groups; and (c) to assess characteristics of the handwriting process across different functional tasks. Thirty-one persons with MCI, 22 with mild Alzheimer's disease, and 41 healthy controls performed functional tasks while using a computerized system. We found significant differences between the groups in almost all measures, with the MCI group assuming a position between the other groups. Temporal measures were higher and pressure was lower in more cognitively deteriorated groups. Information gathered about kinematic measures, together with cognitive functioning, allowed us to classify 69% to 72% of the participants correctly, although the classification for the MCI group was relatively poor.
Werner
Perla
P
Department of Gerontology, University of Haifa, Mt. Carmel, Haifa 31905, Israel. werner@research.haifa.ac.il
Rosenblum
Sara
S
Bar-On
Gady
G
Heinik
Jeremia
J
Korczyn
Amos
A
D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000175:diagnosis* / Q000453:epidemiology*; D001696:Biomechanical Phenomena; D003072:Cognition Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D003937:Diagnosis, Differential; D042241:Early Diagnosis; D005260:Female; D006236:Handwriting; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D011596:Psychomotor Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D012720:Severity of Illness Index