P atients with low output congestive heart failure have less-than-normal slowing of heart rate during pharmacologic increases of arterial pressure, indicating impairment of the arterial baroreceptor-heart rate reflex.1 The mechanism underlying this abnormality is not fully understood and could involve one or more components of the reflex arc, including an afferent limb (generation and transmiss...

A12-year-old brain possesses almost all of the neurons that it will ever have, but still has some maturing to do. Throughout the rest of adolescence and into adulthood, this organ will refine its white matter tracts. These bundles of axon fibers function as the wires in the circuits that connect the neurons in the brain’s many regions. Their carrying capacity and speed determine the degree of c...

This report presents a comparative description of the acetylcholinesterase and butyrylcholinesterase activities and their molecular forms in primary cultures of retinal pigment epithelium (RPE). Acetylcholinesterase activity increases during differentiation of the cells. Sucrose sedimentation analysis of acetylcholinesterase and butyrylcholinesterase molecular forms revealed the presence of A12...

Our research is a variant of the third party punishment game that we call Solomon’s Game. The main feature of this game is that players can not only punish unfair people but also help those individuals who are the victims of that unfairness. The aim of this experiment is to compare the human tendency to punish unfair behavior to the desire to help victims of that unfairness, in presence of a bu...

W x rhen Kouwenhoven et al' introduced the technique of closed-chest cardiac massage in 1960, they wrote, perhaps somewhat exuberantly, that "anyone, anywhere can now initiate cardiac resuscitative procedures. All that is needed are two hands." It is somehow fitting that in this era of high technology medicine more than 30 years later, a promising advance in resuscitation technique, reported by...

Objective: Chloride is the major plasma anion. There are several methods available for the determination of serum chloride levels. Unfortunately these methods are sometimes not available in the urgent setting where values are needed. Here we describe...