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Updated: Jun 4, 2026

Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment
Published on: December 11, 2015
Rapid tremor frequency assessment with the iPhone accelerometer
Raed A Joundi1, John-Stuart Brittain, Ned Jenkinson
1Department of Physiology, Anatomy, and Genetics, Oxford University, UK. raed.joundi@magd.ox.ac.uk
Abstract:
The physician is often seeking more efficient ways of performing patient assessments. Currently, measuring tremor frequency requires expensive and bulky equipment. We propose the use of the in-built accelerometer of the iPhone via the iSeismo application for rapid measurement of tremor frequency. We use this device in a series of 7 different tremor cases, and show that the frequency measurements on the iSeismo graph closely match the more sophisticated EMG analysis during tremor. This is a preliminary confirmation of the usefulness of this device in the clinical setting for quick assessment of the dominant frequency component in a variety of tremors.
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