Calcium dobesilate and transmembrane potential in canine cardiac cells. A preliminary study.

The electropharmacological effects of calcium 2,5-dihydroxybenzene sulfonate (calcium dobesilate, Doxium) were studied by means of intracellular microelectrode technique in order to measure the changes in action potentials (A.ps.) in dog isolated cardiac Purkinje fibers and the adjacent ventricular tissue superfused with Tyrode's solution.

ERG alterations induced by sound.

The existence of efferent neurons from the CNS to the retina mediating centrifugal effects is an old and much debated hypothesis. In order to test whether the human ERG can be influenced by another sensory input, we have recorded the retina response to light when a sound was presented simultaneously. It was found that the b-wave of the ERG increased when a flash was paired with a sound.