Robinson, Lucy J, Gallagher, Peter, Watson, Stuart et al. · PloS one · 2019 · DOI
This study found that people with ME/CFS often experience slowing in thinking speed and processing information, particularly in tasks requiring quick reactions. Importantly, these cognitive difficulties are not caused by depression—even patients without depression showed the same thinking problems. The researchers discovered that problems with heart rate regulation (how the body's autonomic nervous system works) were linked to these cognitive difficulties.
This study addresses a core symptom of ME/CFS—'brain fog' and cognitive difficulties—and clarifies that these are not simply a consequence of depression, a common misconception. The finding that autonomic dysfunction correlates with cognitive slowing suggests a potential biological mechanism linking cardiovascular and neurological symptoms, which could guide future therapeutic investigations.
This cross-sectional study cannot establish causality; the association between HRV and cognitive slowing does not prove autonomic dysfunction causes cognitive impairment—reverse causation or a shared underlying mechanism is possible. The study does not identify the specific biological mechanism responsible for processing speed deficits. Results may not generalize to all ME/CFS presentations, as the sample was heterogeneous and recruitment criteria were not detailed.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Robinson, Lucy J, Gallagher, Peter, Watson, Stuart, Pearce, Ruth, Finkelmeyer, Andreas, Maclachlan, Laura, et al. (2019). Impairments in cognitive performance in chronic fatigue syndrome are common, not related to co-morbid depression but do associate with autonomic dysfunction.. PloS one. https://doi.org/10.1371/journal.pone.0210394
BibTeX
@article{mecfsatlas-robinson-2019-impairments-cognitive,
author = {Robinson, Lucy J and Gallagher, Peter and Watson, Stuart and Pearce, Ruth and Finkelmeyer, Andreas and Maclachlan, Laura and Newton, Julia L},
title = {Impairments in cognitive performance in chronic fatigue syndrome are common, not related to co-morbid depression but do associate with autonomic dysfunction.},
journal = {PloS one},
year = {2019},
doi = {10.1371/journal.pone.0210394},
note = {PubMed: 30721241},
url = {https://www.mecfsatlas.com/evidence/robinson-2019-impairments-cognitive},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/robinson-2019-impairments-cognitive
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