The heart maintains a careful balancing act; too soft and it won’t pump blood, but too hard and it will overtax itself and stop entirely. There is an optimal amount of strain that a beating heart can generate and still beat at its usual rate, once per second.
Media Contact:Liz Vaughan-Adams | email@example.com | +44 (0) 20 7444 0062December 5, 2013
Michael Kahana of the School of Arts and Sciences discusses his research on the interplay between memories of events and places.
Using a video game in which people navigate through a virtual town delivering objects to specific locations, a team of neuroscientists from the University of Pennsylvania and Freiburg University has discovered how brain cells that encode spatial information form “geotags” for specific memories and are activated immediately before those memories are recalled.
WHO: Alison Sweeney
Assistant Professor of Physics
The blood stem cells that live in bone marrow are at the top of a complex family tree. Such stem cells split and divide down various pathways that ultimately produce red cells, white cells and platelets.
WHO: Anthony H. Williams
Pennsylvania State Senator