Dependence of reaction times on movement patterns in patients with Parkinson's disease and those with cerebellar degeneration.

Nakamura, Ryuichi; Taniguchi, Reiji

doi:10.1620/tjem.132.153

Cited by 18 publications

(4 citation statements)

References 10 publications

(9 reference statements)

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“…In previous studies involving males and females, the median electromyography reaction time for the sEMG signal of the right arm biceps brachii was faster than that of the left arm by 3-4 per cent (Nakamura and Saito, 1974;Nakamura and Taniguchi, 1980). Because supination of the left arm rather than the right arm would add a negligible increase to the steering response time, it was expected that there would be a correspondingly negligible effect on path-following accuracy.…”

Section: Adaptation To a Driving Simulatormentioning

confidence: 96%

A surface electromyography controlled steering assistance interface

Nacpil

Zheng

Kaizuka

et al. 2019

JICV

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Purpose Two-handed automobile steering at low vehicle speeds may lead to reduced steering ability at large steering wheel angles and shoulder injury at high steering wheel rates (SWRs). As a first step toward solving these problems, this study aims, firstly, to design a surface electromyography (sEMG) controlled steering assistance interface that enables hands-free steering wheel rotation and, secondly, to validate the effect of this rotation on path-following accuracy. Design/methodology/approach A total of 24 drivers used biceps brachii sEMG signals to control the steering assistance interface at a maximized SWR in three driving simulator scenarios: U-turn, 90º turn and 45º turn. For comparison, the scenarios were repeated with a slower SWR and a game steering wheel in place of the steering assistance interface. The path-following accuracy of the steering assistance interface would be validated if it was at least comparable to that of the game steering wheel. Findings Overall, the steering assistance interface with a maximized SWR was comparable to a game steering wheel. For the U-turn, 90º turn and 45º turn, the sEMG-based human–machine interface (HMI) had median lateral errors of 0.55, 0.3 and 0.2 m, respectively, whereas the game steering wheel, respectively, had median lateral errors of 0.7, 0.4 and 0.3 m. The higher accuracy of the sEMG-based HMI was statistically significant in the case of the U-turn. Originality/value Although production automobiles do not use sEMG-based HMIs, and few studies have proposed sEMG controlled steering, the results of the current study warrant further development of a sEMG-based HMI for an actual automobile.

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Section: Adaptation To a Driving Simulatormentioning

confidence: 96%

A surface electromyography controlled steering assistance interface

Nacpil

Zheng

Kaizuka

et al. 2019

JICV

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“…Measurement of reaction time (RT) for limb movements using RT tasks is frequently performed in represented by concepts such as motor preparation and motor program. Regarding patients with disorders in the central nervous system, examinations of RT using RT tasks are reported [1][2][3] . In recent years, it has been reported that during RT tasks requiring movements of the limbs, body trunk and jaw in humans, changes in the specific muscular discharge patterns such as frequency change, increase/decrease in amplitude and rhythmic movements are observed from the time a warning stimulus that notifies the start of a task is presented to the time an instruction stimulus is presented 7,8) .…”

Section: Introductionmentioning

confidence: 99%

Relationship between reaction time for mandibular movement and the level of muscular discharge of the masticatory muscles in a reaction time task in patients with cerebral palsy

Uchida

Yoshida

Araki

et al. 2008

Pediatric Dental Journal

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“…Some of the kinesiological and physiological studies of motor functions in patients with spinocerebellar degenerations (SCD) have quantitatively analyzed this phenomenon ; for instance, prolonged electromyographic reaction time (EMG-RT) of the biceps brachii muscle for elbow flexion and forearm supination (Nakamura and Taniguchi 1980), and prolongation of the initial biceps EMG bursts in ballistic elbow flexion task (Hallett et al 1975). Reduced velocity or decreased rate of tension development in fast muscular contraction has commonly found in other neurological disorders such as spastic hemiparesis (Angel 1975;Tsuji and Nakamura 1987), and amyotrophic lateral sclerosis (Hallett 1979).…”

mentioning

confidence: 99%

Characteristics of the fastest isometric knee extension in patients with spinocerebellar degenerations.

Fujita

Nakamura

1989

Tohoku J. Exp. Med.

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The force output of the knee extensor muscles and its time course were measured in nine patients with spinocerebellar degenerations and age-matched 10 normal subjects during the fastest and strongest isometric contraction. The time from the rise of tension to its maximum, FTmax, was definitely long in the SCD compared to the normal group, whereas the peak tension was not different between the two groups. FTmax of the SCD group was not related to the rate of tension development and the maximum tension nor to the degree of ataxia, suggesting that the prolongation of FTmax was a characteristic feature of cerebellar lesions. spinocerebellar degenerations ; fast isometric contraction ; knee extension

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Dependence of reaction times on movement patterns in patients with Parkinson's disease and those with cerebellar degeneration.

Cited by 18 publications

References 10 publications

A surface electromyography controlled steering assistance interface

A surface electromyography controlled steering assistance interface

Relationship between reaction time for mandibular movement and the level of muscular discharge of the masticatory muscles in a reaction time task in patients with cerebral palsy

Characteristics of the fastest isometric knee extension in patients with spinocerebellar degenerations.

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