Authors: J. Dickinson, A. Weible, D. Rowland, C. Kentros
Place cells are recorded in CA1 and CA3 fields of the hippocampus. The major afferents to the hippocampus come from entorhinal cortex. When grid cells were first described in recordings from layer 2 of medial entorhinal cortex it was largely assumed that place cell patterns arose from through a summation of grid cell inputs. Continue reading
Poster: Organization of the neuronal assemblies in the anterior thalamus coding for head direction 326.14 (Mon Morning)
Authors: A. Peyrache, M. Lacorix, P. Petersen, G. Buzsaki; NYU
Head-direction cells are neurons that fire when ever a rat’s head is pointed in a particular direction. Discovered by Jim Ranck and first reported at SfN 29 years ago today’s findings are a major update, confirming and extending the cohesive properties of head-direction cell networks.
Poster: Passive Transport Disrupts Grid Cell Firing Patterns. Shawn Winter and Jeff Taube.
Both Grid Cells and Head Direction Cells are thought to be path integrators. That is, each cell type is thought to be driven as a function of the animal’s movement. For head-direction cells firing is thought to be driven by rotational movement; for grid cells a combination of rotation and translation. There are distinct sources of self-movement information: motor action plans, proprioception, and feedback from the environment. Winter and Taube sought to dissect these by removing “action plans” (and some proprioception) by comparing firing in these cell types during passive and active movement. Continue reading
Ed Catmull’s lecture.
Each year SfN invites a prominent non-neuroscientist to speak in the series: Dialog Between Neuroscience and Society. These talks are given on the first day of the meeting, in large, ballroom format. Today’s dialog was given by Ed Catmull, a trained mathematician-physicist whose career has been in developing computer-animation techniques and producing great pictures. Dr. Catmull is president of Pixar the animation component at Disney Pictures. Pixar made Toy Story, the first full-length computer-animated film. Toy Story was, of course, a huge creative and financial success. It has been followed by a string of animated films remarkable in their complexity, creativity and financial returns. How was this done? How can a huge team work for years with one goal, to create a single creative product? What’s the magic formula? Dr. Catmull suggested some answers in his lecture, “The Culture of Creativity“. Continue reading
Friday, Nov 8.
I’ve come just come from the annual meeting of the International Neuroethics Society, an SfN satellite meeting. Fascinating talks on fascinating topics. Speakers and summaries here. The live video feed is over, but videos of the sessions appear to be available. Continue reading
I’ll be blogging at the Society for Neuroscience Annual meeting for the next few days. Expect a series of reports
Bob and me in ’83
Bob Muller, close friend and colleague, died last Monday (Sept 16, 2013). His life was remarkable in breadth, richness and the number of people he loved and influenced. Bob occupied space, lots of space, now a vacuum. Not a vacuum, really; we have memories, achievements and the influence Bob had on so many. Alex, Bob’s daughter, read an email he sent while she was struggling as a novice marine biologist, trying to tag and collect tagged fish. Bob’s email was what we had come to expect: funny (very funny), warm, insightful and wise (although minus the scatological humor regularly heard from Bob).* Continue reading