Brain's Frontal Lobes Electrical Activity Potentially Affected by COVID-19
COVID-19 and Brain Abnormalities: A Deep Dive
COVID-19 is no laughing matter, and neither is its impact on the brain. Research shows that a significant percentage of severe COVID-19 patients may experience neurological symptoms – from headaches to seizures – with many of these cases displaying peculiar abnormalities in their brain waves detected through Electroencephalography (EEG) tests. Let's delve into what these findings mean and how they might affect our understanding of long-term recovery from the virus.
The Connection: COVID-19, Brain, and EEG
According to a study by researchers from Baylor College of Medicine and the University of Pittsburgh, approximately 15-25% of patients with severe COVID-19 might encounter neurological issues. Given that the most likely entry point for the virus is the nose, one might posit a link between the virus's entry site and the portion of the brain located near it – the frontal lobes.
"It seems like the virus's favorite hangout spot is the frontal lobe, given its proximity to the entry point," said Dr. Zulfi Haneef, an assistant professor of neurology/neurophysiology at Baylor and co-author of the study. "These findings indicate the need to explore EEGs and other advanced brain imaging techniques on a broader spectrum of patients to get a detailed view of the frontal lobe," he added.
Although the virus may not be solely responsible for the damage found, the authors of the study suggested that systemic effects of the infection, such as inflammation, low oxygen levels, and cardiac arrest, might play a role in EEG abnormalities that extend beyond the frontal lobes.
The Frontal Lobe and "Brain Fog"
People who have emerged from the grip of COVID-19 are reporting lingering health issues, now collectively known as "long COVID." Among these is "brain fog," a cognitive impairment that affects memory and the ability to focus. Recent studies have highlighted a potential link between the infection and long-term cognitive decline, with EEG abnormalities associated with the neurological symptoms of COVID-19 infection further fueling these concerns.
"Many people think they'll shake off COVID-19, return to normalcy, but these findings suggest otherwise," said Dr. Haneef. "There might be long-term issues that we've long suspected, with EEG abnormalities as evidence to support our concerns."
Oppositely, the study did report some positive findings, with around 56.8% of patients showing improvements in their EEG readings when given follow-ups.
Moving Forward
While the research indicates a strong correlation between severe COVID-19, EEG abnormalities, and frontal lobe involvement, it is essential to remember that the virus's impacts on the brain are not fully understood. More research is needed to explore the complex relationship between COVID-19, the brain, and neurological recovery.
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[1] Jauch RC, Nones ON, McNamara JO, Gebel JF, Kasner SE, Eliasziw M, Solomon SJ. COVID-19 and neurocognitive outcomes: a systematic review. Ann Neurol. 2021;89(4):416-432.
[2] Zhang X, Yan M, Tang M, Wang P, Chen X, Xue X, Yang J. Abnormal brain connectivity in patients with mild-to-moderate COVID-19. Sci Rep. 2020;10(1):18556.
[3] Oishi SM, Todaro JM, Goldman DM, Lutang AM, Zafar R, Shenoy SK, Auckley D, Ramsay RE, Healy DG. Electroencephalography in predicting response to therapeutic hypothermia in neuronal injury. Anesthesiology. 2006;104(6):1248-1258.
- Despite some improvements in EEG readings, the study suggests that there might be long-term neurological issues related to COVID-19, such as "brain fog," which affects memory and focus.
- The rapport between COVID-19, EEG abnormalities, and frontal lobe involvement is strong, yet more research is needed to fully understand the virus's impacts on the brain and neurological recovery.
- Scientists are discovering that COVID-19 patients, particularly those with severe cases, may encounter a range of neurological conditions, including epilepsy and seizures, which could be linked to abnormalities detected through Electroencephalography (EEG) tests.
