Electrophysiologic characteristics of tremor in Parkinson?s disease and essential tremor

Arquivos de Neuro-Psiquiatria

Ederson Cichaczewski¹  Renato P. Munhoz¹  Joaquim M. Maia¹  Percy Nohama¹  Edison M. Nóvak¹  Helio A. Teive¹ 

关键词: Parkinson?s disease;    essential tremor;    tremor;    doença de Parkinson;    tremor essencial;    tremor;   

DOI  :  10.1590/0004-282X20140006

来源: SciELO

【 摘 要 】

Tremor in essential tremor (ET) and Parkinson’s disease (PD) usually present specific electrophysiologic profiles, however amplitude and frequency may have wide variations.Objective:To present the electrophysiologic findings in PD and ET. Method:Patients were assessed at rest, with posture and action. Seventeen patients with ET and 62 with PD were included. PD cases were clustered into three groups: predominant rest tremor; tremor with similar intensity at rest, posture and during kinetic task; and predominant kinetic tremor. Results:Patients with PD presented tremors with average frequency of 5.29±1.18 Hz at rest, 5.79±1.39 Hz with posture and 6.48±1.34 Hz with the kinetic task. Tremor in ET presented with an average frequency of 5.97±1.1 Hz at rest, 6.18±1 Hz with posture and 6.53±1.2 Hz with kinetic task. Seven (41.2%) also showed rest tremor. Conclusion:The tremor analysis alone using the methodology described here, is not sufficient to differentiate tremor in ET and PD.

【 授权许可】

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