Brainwaves Oscillations as a Potential Biomarker for Major Depression Disorder Risk.

Major depressive disorder (MDD) is a multidimensional disorder that is characterized by the presence of alterations in mood, cognitive capacity, sensorimotor, and homeostatic functions. Given that about half of the patients diagnosed with MDD do not respond to the various current treatments, new techniques are being sought to predict not only the course of the disease but also the characteristics that differentiate responders from non-responders. Using the electroencephalogram, a noninvasive and inexpensive tool, most studies have proposed that patients with MDD have some lateralization in brain electrical activity, with alterations in alpha and theta rhythms being observed, which would be related to dysfunctions in emotional capacity such as the absence or presence of responses to the different existing treatments.

[Carpal tunnel syndrome: clinical and neurophysiological correlation: review of 100 cases].

Introduction: The diagnosis of carpal tunnel syndrome (CTS) continues to be neurophysiologically and clinically controversial. This study attempts to find the correlation between the subjective symptomatology and the neurophysiological affectation, establishing a diagnostic guide for the family doctor in order to recognize early CTS for referral to the specialist doctor.

Patients And Methods: After a sample of 100 cases with clinical suspicion of CTS, a clinical evaluation was made with the symptoms (paresthesias, pain, loss of strength), signs (Tinel, Phalen), and the neurophysiological evaluation with electroneurography (ENG) of the median and cubital nerve (sensory velocity (SV), motor distal latency (MDL)), and electromyography (EMG) of tenar eminence muscles.