Tremor Frequency Assessment by iPhone® Applications: Correlation with EMG Analysis
2016; IOS Press; Volume: 6; Issue: 4 Linguagem: Inglês
10.3233/jpd-160936
ISSN1877-718X
AutoresRui Araújo, Miguel Tábuas‐Pereira, Luciano Almendra, Joana Afonso Ribeiro, Marta Arenga, Luís Negrão, Anabela Matos, Ana Morgadinho, Cristina Januário,
Tópico(s)Botulinum Toxin and Related Neurological Disorders
ResumoTremor frequency analysis is usually performed by EMG studies but accelerometers are progressively being more used. The iPhone® contains an accelerometer and many applications claim to be capable of measuring tremor frequency. We tested three applications in twenty-two patients with a diagnosis of PD, ET and Holmes' tremor. EMG needle assessment as well as accelerometry was performed at the same time. There was very strong correlation (Pearson >0.8, p < 0.001) between the three applications, the EMG needle and the accelerometry. Our data suggests the apps LiftPulse®, iSeismometer® and Studymytremor® are a reliable alternative to the EMG for tremor frequency assessment.
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