Neural activity is intimately tied to blood flow in the brain. This coupling is specific enough in space and time that modern imaging methods use local hemodynamics as a measure of brain activity. In this review, we discuss recent evidence indicating that neuronal activity is coupled to local blood flow changes through an intermediary, the astrocyte. We highlight unresolved issues regarding the...

espanolLas luxaciones de rodilla son poco frecuentes pero en un elevado porcentaje pueden estar asociadas a graves complicaciones neurovasculares. La afectacion del nervio peroneo comun es la lesion mas frecuente. arteria poplitea esta afectada principalmente los casos luxacion posterior y traumatismos con multiligamentosa. Presentamos caso anterior tibio-femoral acompanada isquemia aguda por o...

Diabetes mellitus (DM) is now recognized as a system-wide, autoimmune, inflammatory, microvascular disorder, which, in the retina and brain results severe multifocal injury leading cause, world-wide, of progressive vision loss dementia. To address this problem, resulting primarily from variations glycemia prediabetic overt diabetic states, it must be realized that, although some processes assoc...