EMG patterns in abnormal involuntary movements induced by neuroleptics.

Bathien, N; Koutlidis, R M; Rondot, Pierre

doi:10.1136/jnnp.47.9.1002

Cited by 13 publications

(5 citation statements)

References 7 publications

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“…Parkinsonian hypokinesia, unlike other NIMD or PsA, shows less movements (overall activity count) in actometric recordings, which we have presented previously [ 34 ]. In our study, the frequencies of rhythmic activity in NIP were much lower (median below 1 Hz), than reported by previous studies (above 4 Hz) [ 29 , 33 ]. One possible explanation is that by measuring lower limb activity in a sitting position we could not detect the high frequency NIP tremor, which in previous studies was measured from upper limbs by actometry [ 33 ].…”

Section: Discussioncontrasting

confidence: 84%

“…NIP has been studied by EMG [ 29 , 30 ] and force transducers [ 14 , 17 , 31 ], and NIP tremor has been studied by accelerometry [ 32 - 34 ]. NIP tremor occurred in the range of 5–7 Hz when recorded from a pair of antagonist muscles in EMG studies, and was distinguishable from the activity of TD [ 29 , 30 ]. Mean tremor frequency measured by accelerometry was over 5 Hz [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

“…TD has been studied instrumentally by EMG [ 29 , 30 ], force transducers [ 14 , 16 , 17 , 31 , 35 ], and accelerometers [ 35 - 37 ]. EMG studies described the movement pattern as irregular bursts below 3 Hz, but almost all TD patients had activity in limbs – 15 of 16 [ 29 , 30 ]. Instrumental measurement has been used in TD to estimate current status and treatment efficacy [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

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Neuroleptic-induced movement disorders in a naturalistic schizophrenia population: diagnostic value of actometric movement patterns

Janno

Holi

Tuisku³

et al. 2008

BMC Neurol

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Section: Discussioncontrasting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Neuroleptic-induced movement disorders in a naturalistic schizophrenia population: diagnostic value of actometric movement patterns

Janno

Holi

Tuisku³

et al. 2008

BMC Neurol

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“…Early techniques included laboratory-based invasive needle electromyogrpahy (EMG) and surface EMG that quantified PD tremors, gait, and bradykinesia. [ 19 20 21 ] Less invasive potentiometer was developed to map multiple PD symptoms. [ 22 ] The creation of inertial measurement units (IMUs) in the form of accelerometers and gyroscopes enabled accurate identification, classification, and characterization of the aforementioned PD symptoms.…”

Section: Pd and T Echnologymentioning

confidence: 99%

Parkinson's Disease and Wearable Technology

Bagrodia

Holla

Kamble

et al. 2022

Annals of Indian Academy of Neurology

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Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder. In India, an accurate number of PD patients remains uncertain owing to the unawareness of PD symptoms in the geriatric population and the large discrepancy between the number of PD patients and trained neurologists. Constructing additional neurological care centers along with using technology and integrating it into digital healthcare platforms will help reduce this burden. Use of technology in PD diagnosis and monitoring started in 1980s with invasive techniques performed in laboratories. Over the last five decades, PD technology has significantly evolved where now patients can track symptoms using their smartphones or wearable sensors. However, the use of such technology within the Indian population is non-existent primarily due to the cost of digital devices and limited technological capabilities of geriatric patients especially in rural areas. Other reasons include secure data transfers from patients to physicians and the general lack of awareness of wearables devices. Thus, creating a simple, cost-effective and inconspicuous wearable device would yield the highest compliance within the Indian PD patient population. Implementation of such technology will provide neurologists with wider outreach to patients in rural locations, remote monitoring and empirical data to titrate medication.

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“…44 Bathien et al studied patients with levodopa-induced dyskinesia and tardive dyskinesia and reported that tonic-type bursts were related to "athetoid" movements, whereas a shorter "anarchistic" burst pattern coincided with chorea. 45,46 Two small studies emphasized the constant change and unpredictability of the EMG pattern in patients with HD. 47,48 They both recorded many abrupt, brief bursts reminiscent of myoclonus and long-lasting contractions similar to those in torsion dystonia, and there was continuous change from one muscle to another and from one type of movement within an individual muscle to another.…”

Section: Objective Assessmentmentioning

confidence: 99%

A review of the assessment of dyskinesias

1999

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Dyskinesias are most prevalent in patients with Huntington's disease (HD), patients with Parkinson's disease (PD) who have received chronic levodopa therapy, and in patients who have been treated with neuroleptics (tardive dyskinesia [TD]). Recent therapeutic developments have fueled a growing interest in the clinimetrics of dyskinesias. For dyskinesias in HD, few rating scales are available, but data on validity, reliability, and responsiveness are scarce. Only the interrater reliability of facial dyskinesias has been evaluated and found to be low. Many subjective rating scales for dyskinesias in PD exist, but only the Dyskinesia Rating Scale has undergone sufficient clinimetric evaluation. For TD, numerous rating scales are available, many of them with ample data on reliability and validity. Objective assessment of dyskinesias has been attempted with a number of techniques. All these methods require a laboratory setting, rendering them susceptible to influence of stress. Moreover, they provide only a momentary assessment of dyskinesia severity and fail to take into account diurnal fluctuations. In view of the methodologic shortcomings in the assessment of dyskinesias, more effort needs to be put into strengthening currently available modes of assessment or designing new ones. In the future ambulatory accelerometry might prove to be of value in this field.

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EMG patterns in abnormal involuntary movements induced by neuroleptics.

Cited by 13 publications

References 7 publications

Neuroleptic-induced movement disorders in a naturalistic schizophrenia population: diagnostic value of actometric movement patterns

Neuroleptic-induced movement disorders in a naturalistic schizophrenia population: diagnostic value of actometric movement patterns

Parkinson's Disease and Wearable Technology

A review of the assessment of dyskinesias

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