A fast-moving target in the Valpar assembly task improved unimanual and bimanual movements in patients with schizophrenia

Wang, Shu Mei; Kuo, Li-Chieh; Ouyang, Wen; Hsu, Hsiao Man; Ing, Hui

doi:10.3109/09638288.2012.748837

Cited by 5 publications

(11 citation statements)

References 36 publications

(67 reference statements)

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“…Indeed, earlier research has anticipated lower reliability of mechanical instruments for measuring facial movement problems than hand ones (18). The motion capture system was more sensitive to detecting differences in bradykinesia and dyskinesia between patients and healthy people than the clinical rating scales, which is consistent with earlier evidence that hand instrumental measures are more sensitive than rating scales (12,15,16,19,25,26). This study further showed that the motion capture system was also more sensitive than the rating scales in terms of detecting differences in facial bradykinesia and dyskinesia between patients and healthy people.…”

Section: Discussionsupporting

confidence: 82%

“…Two reflective markers were placed on the ulnar styloid process (representing the wrist) and the thumbnail of the right hand and additional two markers on the object (Figure 2). This right-hand task was adapted based on the tasks in previous studies that detected movement abnormalities in schizophrenia patients (25)(26)(27).…”

Section: The Right-hand Taskmentioning

confidence: 99%

Section: Definitions Of Kinematic Variables Detecting Bradykinesia An...mentioning

confidence: 99%

“…For the right-hand task, timing of the movement onset was defined as when the velocity of the wrist marker reached 5% of its peak velocity (20,22,23,(25)(26)(27). Timing of the movement end was defined as when the velocity of the thumb marker decreased to 0 mm/s and the aimed object kept stationary (25)(26)(27). For the facial task, timing of the movement onset and end was defined as when the velocity of the eyebrow marker reached 5% of its peak velocity (20,22,23,(25)(26)(27) and when its velocity dropped to 5% of its peak velocity (20,23), respectively.…”

Section: Definitions Of Kinematic Variables Detecting Bradykinesia An...mentioning

confidence: 99%

“…By recording movement trajectories of markers/sensors attached to the patient's body parts, motion capture systems make it possible to calculate kinematic variables that objectively and directly reflect movement speed and quality for each body part in the patient. Existing studies have applied motion capture systems to measuring hand movements in patients with schizophrenia (25)(26)(27). Nevertheless, to date, little has been known about whether motion capture systems reliably measured hand and facial bradykinesia and dyskinesia in schizophrenia patients.…”

Section: Introductionmentioning

confidence: 99%

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An Instrumental Measure of Hand and Facial Movement Abnormalities in Patients With Schizophrenia

et al. 2022

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IntroductionMovement disorders have been suggested to be a cardinal component of schizophrenia. With increased research interests in this area, instrumental measures are needed. This study was to examine if the motion capture system was reliable in measuring hand and facial bradykinesia and dyskinesia and more sensitive to detecting movement differences between schizophrenia patients and healthy people than traditional rating scales.MethodsSixteen schizophrenia patients and 20 control subjects were recruited. Hand and facial bradykinesia and dyskinesia were measured using the motion capture system and rated using the Extrapyramidal Symptom Rating Scale and the Abnormal Involuntary Movement Scale.ResultsThe system showed strong test–retest reliability and generated larger effect sizes of group differences than did the rating scales.ConclusionsThe results may support researchers and clinical practitioners to apply the system to sensitively measuring the hand and facial movement symptoms in schizophrenia patients, which contributes to gaining a deep understanding of movement issues in schizophrenia.

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Section: Discussionsupporting

confidence: 82%

Section: The Right-hand Taskmentioning

confidence: 99%

Section: Definitions Of Kinematic Variables Detecting Bradykinesia An...mentioning

confidence: 99%

Section: Definitions Of Kinematic Variables Detecting Bradykinesia An...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Instrumental Measure of Hand and Facial Movement Abnormalities in Patients With Schizophrenia

et al. 2022

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Effects of rhythmic auditory stimulation on upper-limb movement speed in patients with schizophrenia spectrum disorders

Wang

Lin

Tse³

et al. 2020

Eur Arch Psychiatry Clin Neurosci

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Facial and upper-limb movement abnormalities in individuals with psychotic-like experiences: a motion analysis study

Wang

Lam

Kuo

et al. 2022

Eur Arch Psychiatry Clin Neurosci

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Slow movements and irregular muscle contraction have been reported separately in different studies targeting individuals with psychotic-like experiences (PLEs). To date, it remains unknown whether these two movement abnormalities, possibly associated with hypo-and hyperdopaminergia respectively, co-existed in one sample with PLEs and interrelated in the early stage of psychotic progression. Therefore, this study was to examine if facial and upper-limb slow movements and irregular muscle contraction co-existed in individuals with PLEs, interrelated, and were associated with PLEs. A total of 26 individuals with PLEs, who were identified using the 16-item Prodromal Questionnaire, and 26 age-and gender-matched healthy controls received the facial and upper-limb movement measurement. A motion capture system was used to record the movement procedure and thus calculate kinematic variables that represented severity of slow movements and irregular muscle contraction. Results showed that facial and upper-limb slow movements and facial irregular muscle contraction existed in individuals with PLEs. For the total sample, slower facial movements were associated with less regular facial muscle contraction; slower upper-limb movements were associated with less regular upper-limb muscle contraction.Slower and less regular facial and upper-limb movements were associated with more severe PLEs. Compensatory changes in dopaminergic neural pathways in response to elevated dopamine might explain connection between slow movements and irregular muscle contraction.Because of the ability to detect facial and upper-limb movement abnormalities objectively and sensitively, motion analysis has great applicability to sensorimotor studies for people in the psychosis continuum.

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A fast-moving target in the Valpar assembly task improved unimanual and bimanual movements in patients with schizophrenia

Cited by 5 publications

References 36 publications

An Instrumental Measure of Hand and Facial Movement Abnormalities in Patients With Schizophrenia

An Instrumental Measure of Hand and Facial Movement Abnormalities in Patients With Schizophrenia

Effects of rhythmic auditory stimulation on upper-limb movement speed in patients with schizophrenia spectrum disorders

Facial and upper-limb movement abnormalities in individuals with psychotic-like experiences: a motion analysis study

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