Sex and Electrode Configuration in Transcranial Electrical Stimulation.

Transcranial electrical stimulation (tES) can be an effective non-invasive neuromodulation procedure. Unfortunately, the considerable variation in reported treatment outcomes, both within and between studies, has made the procedure unreliable for many applications. To determine if individual differences in cranium morphology and tissue conductivity can account for some of this variation, the electrical density at two cortical locations (temporal and frontal) directly under scalp electrodes was modeled using a validated MRI modeling procedure in 23 subjects (12 males and 11 females).

Free flap transfer with microvascular anastomosis.

The development of the flap transfer technique in plastic and reconstructive surgery has evolved to the stage where free transplantation of a full-thickness skin flap, by means of microvascular anastomosis, has become posssible. For the first time in South Africa, a case is documented where such a free graft was used successfully to reconstruct a severe burn contracture of the neck. Experience with this and subsequent cases has taught valuable lessons about the procedure.