Timing Dysfunctions in Schizophrenia as Measured by a Repetitive Finger Tapping Task

Autor/inn/en	Carroll, Christine A.; O'Donnell, Brian F.; Shekhar, Anantha; Hetrick, William P.
Titel	Timing Dysfunctions in Schizophrenia as Measured by a Repetitive Finger Tapping Task
Quelle	In: Brain and Cognition, 71 (2009) 3, S.345-353 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0278-2626
DOI	10.1016/j.bandc.2009.06.009
Schlagwörter	Schizophrenia; Symptoms (Individual Disorders); Brain; Cognitive Processes; Task Analysis; Time Perspective; Motor Reactions; Perception Tests; Control Groups; Intonation; Intervals; Mathematical Models; Perceptual Impairments + Suchen Sie Ihr Suchwort? Schizophrenie; Psychiatrische Symptomatik; Gehirn; Cognitive process; Kognitiver Prozess; Aufgabenanalyse; Zeitbezug; Mathematical model; Mathematisches Modell; Perceptual handicaps; Wahrnehmungsstörung
Abstract	Schizophrenia may be associated with a fundamental disturbance in the temporal coordination of information processing in the brain, leading to classic symptoms of schizophrenia such as thought disorder and disorganized and contextually inappropriate behavior. Although a variety of behavioral studies have provided strong evidence for perceptual timing deficits in schizophrenia, no study to date has directly examined overt temporal performance in schizophrenia using a task that differentially engages perceptual and motor-based timing processes. The present study aimed to isolate perceptual and motor-based temporal performance in individuals diagnosed with schizophrenia using a repetitive finger-tapping task that has previously been shown to differentially engage brain regions associated with perceptual and motor-related timing behavior. Thirty-two individuals with schizophrenia and 31 non-psychiatric control participants completed the repetitive finger-tapping task, which required participants to first tap in time with computer-generated tones separated by a fixed intertone interval (tone-paced tapping), after which the tones were discontinued and participants were required to continue tapping at the established pace (self-paced tapping). Participants with schizophrenia displayed significantly faster tapping rates for both tone- and self-paced portions of the task compared to the non-psychiatric group. Individuals diagnosed with schizophrenia also displayed greater tapping variability during both tone- and self-paced portions of the task. The application of a mathematical timing model further indicated that group differences were primarily attributable to increased timing--as opposed to task implementation--difficulties in the schizophrenia group, which is noteworthy given the broad range of impairments typically associated with the disorder. These findings support the contention that schizophrenia is associated with a broad range of timing difficulties, including those associated with time perception as well as time production. (Contains 2 tables and 3 figures.) (As Provided).
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Update	2017/4/10