Brief reportKinematic analysis of handwriting movements in Schizophrenic patients
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Cited by (33)
Schizotypal traits and forearm motor control against self-other produced action in a bimanual unloading task
2018, NeuropsychologiaCitation Excerpt :In addition to the predictive dysfunction, we expected a certain degree of decline in postural control in an imposed unloading condition for individuals with high schizotypy, since some motor deficits have been reported relevant to schizophrenic symptoms. Previous studies found deteriorations in motor planning or execution in individuals with schizophrenic symptoms (Blyler et al., 1997; Carnahan et al., 1997; Gallucci et al., 1997), in relatives of patients (Erlenmeyer-Kimling et al., 2000), and in individuals with high schizotypal traits (Asai et al., 2008; Kaczorowski et al., 2009; Lenzenweger and Maher, 2002; Neumann and Walker, 1999; Roché et al., 2015). Although this reduced motor performance may be partially explained by the predictive dysfunction of self-produced action, the mechanism and associating factors are still unclear.
Quantification of handwriting performance: Development of a force acquisition pen for measuring hand-grip and pen tip forces
2013, Measurement: Journal of the International Measurement ConfederationCitation Excerpt :People with one or more deficiencies in these functions are said to have dysgraphia. Numerous methods have been proposed for the quantitative and qualitative evaluation of handwriting performance [4,5,7,9,14,15,27,35,36,38–51]. Teachers and parents are mainly concerned with the legibility or quality of writing.
A computational model of Parkinsonian handwriting that highlights the role of the indirect pathway in the basal ganglia
2009, Human Movement ScienceCitation Excerpt :Handwriting has been gaining attention as a source of diagnostic information (Cobbah & Fairhurst, 2000; Kuenstler, Juhnhold, Knapp, & Gertz, 1999; van Gemmert, Teulings, Contreras-Vidal, & Stelmach, 1999), for a variety of neurological disorders including Parkinson’s disease (PD) (van Gemmert et al., 1999; Teulings, Contreras-Vidal, Stelmach, & Adler, 2002), schizophrenia (Gallucci, Phillips, Bradshaw, Vaddadi, & Pantelis, 1997), obsessive–compulsive disorder (OCD) (Mavrogiorgou et al., 2001), Huntington’s disease (Phillips, Bradshaw, Chiu, & Bradshaw, 1994), and more.
Language as gesture
2009, Human Movement ScienceCitation Excerpt :Both speech and signing carry the imprint of individual identity, and can vary within individuals depending on mood or pathological states. The same is true of handwriting, which has been shown to be sensitive to depression (Mergl et al., 2004), aging (Slavin, Phillips, & Bradshaw, 1996), schizophrenia (Gallucci, Phillips, Bradshaw, Vaddadi, & Pantelis, 1997), degenerative disorders (Slavin, Phillips, Bradshaw, Hall, & Presnell, 1999), and the chewing of nicotine gum (Tucha & Lange, 2004)! I have argued in this paper that language has its origins in manual gesture rather than in animal calls.
Handwriting movement analyses for monitoring drug-induced motor side effects in schizophrenia patients treated with risperidone
2009, Human Movement ScienceCitation Excerpt :The purpose of the present study was to evaluate our new approach to assessing EPS based on quantifying handwriting movements. The use of handwriting to assess EPS was first reported by Haase (1961, 1978) and was adopted in more recent psychopharmacological studies (Gallucci, Phillips, Bradshaw, Vaddadi, & Pantelis, 1997; Gerken, Wetzel, & Benkert, 1991; Kuenstler, Juhnhold, Knapp, & Gertz, 1999). Gerken et al. (1991) expressed movement size as the area encompassed by handwriting in schizophrenic patients.