Reduced daytime activity in patients with acquired brain damage and apathy: A 
study with ambulatory actigraphy

Müller, Ulrich; Czymmek, J.; Thöne-Otto, Angelika; von Cramon, D. Yves

doi:10.1080/02699050500443467

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Reduced daytime activity in patients with acquired brain damage and apathy: A study with ambulatory actigraphy

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von Cramon, D. Yves
Department Cognitive Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Müller, U., Czymmek, J., Thöne-Otto, A., & von Cramon, D. Y. (2006). Reduced daytime activity in patients with acquired brain damage and apathy: A study with ambulatory actigraphy. Brain Injury, 20(2), 157-160. doi:10.1080/02699050500443467.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-D4E9-F

Abstract

PRIMARY OBJECTIVE: Apathy is difficult to assess in clinical practice. Ambulatory actigraphy was used with the aim to measure locomotor activity during the daytime as a correlate of self-initiated action in brain-damaged patients with apathy. RESEARCH DESIGN: Twenty-four patients with acquired brain damage and high levels of apathy or low levels of apathy as well as 12 healthy controls were investigated using a parallel group design. METHODS AND PROCEDURES: Apathy was diagnosed after clinical observation and evaluated with the apathy evaluation scale. Locomotor activity was measured with a wrist-worn actigraph over 3 days. RESULTS: High apathy patients showed significantly reduced locomotor activity and more episodes of inactivity (naps) during the daytime. Self-rated apathy correlated with daytime activity, nap frequency and cognitive (executive) deficits. CONCLUSIONS: Ambulatory actigraphy is a promising method to evaluate self-initiated action in patients with apathy.