Inclusion Criteria:  Symptomatic individuals who recovered from COVID-19, 3-8 months after the onset of the acute stage of the disease. All individuals will be Israeli citizens, fluent Hebrew speakers with normal/corrected to normal vision and hearing abilities.  Exclusion Criteria:  Asymptomatic convalescents, and symptomatic convalescents who have a history of one or more of the following: Chronic obstructive pulmonary disease (COPD), Congestive heart failure (CHF), ischemic heart disease (IHD), Cerebrovascular accident (CVA), Chronic Kidney disease (CKD) with glomerular filtration rate of less than 30ml/minute, Cirrhosis of the liver, Hypoxia (less than 80% oxygen levels at room air), neurologic disease, diagnosed decline in cognitive function prior to disease onset , psychiatric disease or usage of anti-psychotic medications, addiction to drugs or alcohol.  In addition, a potential participant will be excluded from participation if he/she has a contraindication to magnetic resonance (MR) scanning, as defined by the Rabin Medical Center regulations: this includes patients with unremovable non-MR compatible implants, pregnant women and participants who suffer from claustrophobia.