Medicine and Health Sciences Commons^™

What Internal Variables Affect Sensorimotor Rhythm Brain-Computer Interface (Smr-Bci) Performance?, Alex J. Horowitz, Christoph Guger, Milena Korostenskaja

HCA Healthcare Journal of Medicine

In this review article, we aimed to create a summary of the effects of internal variables on the performance of sensorimotor rhythm-based brain computer interfaces (SMR-BCIs). SMR-BCIs can be potentially used for interfacing between the brain and devices, bypassing usual central nervous system output, such as muscle activity. The careful consideration of internal factors, affecting SMR-BCI performance, can maximize BCI application in both healthy and disabled people. Internal variables may be generalized as descriptors of the processes mainly dependent on the BCI user and/or originating within the user. The current review aimed to critically evaluate and summarize the currently accumulated …

What External Variables Affect Sensorimotor Rhythm Brain-Computer Interface (Smr-Bci) Performance?, Alex J. Horowitz, Christoph Guger, Milena Korostenskaja

HCA Healthcare Journal of Medicine

Sensorimotor rhythm-based brain-computer interfaces (SMR-BCIs) are used for the acquisition and translation of motor imagery-related brain signals into machine control commands, bypassing the usual central nervous system output. The selection of optimal external variable configuration can maximize SMR-BCI performance in both healthy and disabled people. This performance is especially important now when the BCI is targeted for everyday use in the environment beyond strictly regulated laboratory settings. In this review article, we summarize and critically evaluate the current body of knowledge pertaining to the effect of the external variables on SMR-BCI performance. When assessing the relationship between SMR-BCI performance and …

Hyperglycemia Followed By An Abrupt Decrease Of Blood Glucose Is A Rare Cause Of Posterior Reversible Encephalopathy Syndrome (Pres), Liza Garabet Diramerian, Nabila Ashraf, Admir Syla, Armen Malkhasian, Jason Madey

HCA Healthcare Journal of Medicine

Introduction

Posterior Reversible Encephalopathic Syndrome (PRES) is a clinical syndrome of headache, confusion or decreased level of consciousness, visual changes, seizures and focal neurologic signs associated with characteristic neuroimaging findings of posterior cerebral white matter edema. In most cases, PRES is precipitated by sudden increase in blood pressure; however, in the case presented here, the etiology was different as it was secondary to extreme changes in glucose levels.

Case Presentation

A 49-year-old female with a past medical history of hypertension and diabetes mellitus, type 2 was brought to the emergency room with a chief complaint of visual changes for 1 …

Guillain-Barré Syndrome In A Patient With Sickle Cell Anemia, Kunjan Udani, Pooja Patel, Dveet Patel, Hajra Awwab, Nino Balanchivadze

HCA Healthcare Journal of Medicine

A 24-year-old African American male with a history of sickle cell anemia (Hb S/S) presented to an outside hospital with acute colitis, acute renal failure and sickle cell crisis and was treated with supportive measures. On day 3 of hospitalization, he developed bilateral ascending paralysis with sacral numbness. Magnetic resonance imaging (MRI) demonstrated epidural lipomatosis, which was attributed as the cause of his paralysis. He was transferred to our facility for neurosurgery evaluation. Based on the physical examination, Guillain-Barré Syndrome (GBS) was suspected. This conclusion lead to a lumbar puncture with cerebrospinal fluid (CSF) analysis that confirmed the diagnosis. He …