The impact of wearing a KN95 face mask on human brain function: evidence from resting state functional magnetic resonance imaging

Article Biology

Effect of surgical mask on fMRI signals during task and rest

Benjamin Klugah-Brown et al.

Summary: Wearing a face mask during fMRI has little to no significant effect on resting-state and task activations.

COMMUNICATIONS BIOLOGY (2022)

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Article Clinical Neurology

Preliminary study on brain resting-state networks and cognitive impairments of patients with obstructive sleep apnea-hypopnea syndrome

Yaqing He et al.

Summary: This study investigated the functional changes in brain resting-state networks (RSNs) in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) and their correlations with sleep breathing disorders and neurocognitive performance. The findings revealed that OSAHS patients performed worse on neuropsychological tests and exhibited altered functional connectivity in several RSNs. These changes in RSNs were associated with decreased cognitive function and are likely influenced by intermittent hypoxia and sleep fragmentation caused by OSAHS.

BMC NEUROLOGY (2022)

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Article Radiology, Nuclear Medicine & Medical Imaging

Wearing a KN95/FFP2 facemask induces subtle yet significant brain functional connectivity modifications restricted to the salience network

Sven Haller et al.

Summary: This study used resting-state functional magnetic resonance imaging (fMRI) to investigate the effects of wearing FFP2/KN95 facemasks on brain functional connectivity. The results showed that wearing a facemask led to a reduction in functional connectivity between the high-level salience network (SN) and certain brain regions, while other lower-level functional networks remained unchanged. These findings suggest that wearing a facemask may have an impact on functional connectivity related to communication, social behavior, and self-awareness.

EUROPEAN RADIOLOGY EXPERIMENTAL (2022)

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Article Medicine, General & Internal

Impaired brain networks functional connectivity after acute mild hypoxia

Jie Liu et al.

Summary: This study analyzed the changes in brain networks functional connectivity of pilots exposed to simulated hypoxia using resting-state functional magnetic resonance imaging (fMRI). The results showed that the functional connectivity of brain networks decreased significantly after hypoxia exposure, which may be one of the mechanisms underlying hypoxia-induced cognitive impairment in pilots.

MEDICINE (2022)

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Article Endocrinology & Metabolism

Reversal of neurovascular coupling in the default mode network: Evidence from hypoxia

Gabriella M. K. Rossetti et al.

Summary: Local changes in cerebral blood flow in response to hypoxia do not uniformly affect regional cerebral blood flow. Despite decreasing baseline rCBF in the default mode network, neuronal activity and task performance remain unaffected. Hypoxia seems to reverse neurovascular coupling in the default mode network of healthy adults, specifically altering the BOLD response.

JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM (2021)

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Article Behavioral Sciences

Resting-state brain connectivity in healthy young and middle-aged adults at risk of progressive Alzheimer's disease

Ludmila Kucikova et al.

Summary: This study reviewed functional connectivity differences in young and middle-aged cognitively intact individuals with non-modifiable risk factors of AD, focusing on the Default Mode Network, Executive Network, and Salience Network. The literature indicated early vulnerability of functional connectivity across different at-risk groups, particularly in the Default Mode Network.

NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS (2021)

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Article Neurosciences

Effect of wearing a face mask on fMRI BOLD contrast

Christine S. W. Law et al.

Summary: The study investigated the potential impact of wearing a face mask on BOLD contrast during fMRI scans, showing that it can alter BOLD baseline signal but has minimal effects on task activation.

NEUROIMAGE (2021)

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Review Behavioral Sciences