Clinical Research Directory

Inclusion Criteria: * Patients with diagnosis of Long COVID * SARS-COV2 test positive * Symptoms \> 12 weeks post COVID * Subjective complaint of 'brain fog" or cognitive dysfunction * Patients with diagnosis of Postural Orthostatic Syndrome (POTS) from the Calgary Autonomic Investigation and Management Clinic * Subjective complaint of 'brain fog" or cognitive impairment * Healthy participants * Without POTS or "brain fog" * Age 18 to 60 years * Female and Male * Able to give an informed consent Exclusion Criteria: * Patients with overt causes for POTS (e.g., dehydration, prolonged bed rest) * An inability to safely withdraw from medicine(s) that could make test interpretation difficult and impossible. * Other factors which are in the investigator's opinion would prevent the participant from completing the protocol, including poor compliance during previous studies or an unpredictable schedule. * Unable to give an informed consent.