You are currently browsing the thoughts on thoughts weblog archives for the day 04/02/2009.
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| « Jan | Mar » | |||||
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | |
- 05/02/2012: Failure of conscious thought suppression
- 02/02/2012: What is the preconscious?
- 30/01/2012: Are there two types of cognition?
- 27/01/2012: The new way to view cognition
- 24/01/2012: About the claustrum
- 21/01/2012: Two sides of synchrony
- 18/01/2012: Skull shape changes are not independent
- 15/01/2012: the other way around
- 12/01/2012: A look at the dogma
- 09/01/2012: the Freud hangup
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- September 2008
- August 2008
- July 2008
- June 2008
Archive for 04/02/2009
Towards understanding working memory
04/02/2009 by admin.
A paper has recently been published that has everyone buzzing. A
There are types of memory - working memory, long-term memory and one or more intermediate memories. Until recently, it was thought that the working memory was in the form of circular networks of cells that could sustain activity in their circuits for short periods of time. This theory was problematic. The new research has shown that certain cells can maintain activity for a minute or more after a short stimulation. This is the sort of time frame that is needed for working memory. It has been compared to the
In short-term memory tasks, individual prefrontal cortical (PFC) neurons can maintain persistent action potential output during delay periods between informative cues and behavioral responses. … Here we used patch-clamp recording of layer 5 PFC pyramidal neurons to identify a postsynaptic depolarization that was evoked by action potential bursts and mediated by metabotropic glutamate receptor 5 (mGluR5). This depolarization occurred in the absence of recurrent synaptic activity… We propose that burst-evoked intrinsic depolarization is a form of short-term cellular memory.
Working memory appears to be involved in the production of consciousness. The identification of these memory cells may soon clarify some aspects of awareness.
Posted in memory | 1 Comment »