Differential activation of ATP-sensitive potassium channels during energy depletion in CA1 pyramidal cells and interneurones of rat hippocampus

2000 ◽  
Vol 439 (3) ◽  
pp. 256-262 ◽  
Author(s):  
C. Zawar ◽  
B. Neumcke
Keyword(s):  
Potassium Channels ◽  
Pyramidal Cells ◽  
Rat Hippocampus ◽  
Energy Depletion ◽  
Differential Activation ◽  
Ca1 Pyramidal Cells

Cannabinoid receptor activation in CA1 pyramidal cells in adult rat hippocampus

2000 ◽  
Vol 863 (1-2) ◽  
pp. 120-131 ◽  
Author(s):  
M.Todd Kirby ◽  
Robert E Hampson ◽  
Sam A Deadwyler
Keyword(s):  
Cannabinoid Receptor ◽  
Pyramidal Cells ◽  
Receptor Activation ◽  
Rat Hippocampus ◽  
Adult Rat ◽  
Ca1 Pyramidal Cells

scholarly journals Representation of Objects in Space by Two Classes of Hippocampal Pyramidal Cells

2004 ◽  
Vol 124 (1) ◽  
pp. 9-25 ◽  
Author(s):  
Bruno Rivard ◽  
Yu Li ◽  
Pierre-Pascal Lenck-Santini ◽  
Bruno Poucet ◽  
Robert U. Muller
Keyword(s):  
Cell Activity ◽  
Pyramidal Cells ◽  
Place Cell ◽  
Place Cells ◽  
Rat Hippocampus ◽  
Ca1 Pyramidal Cells ◽  
New Class ◽  
Familiar Environment ◽  
Current Arrangement ◽  
Number Of Cells

Humans can recognize and navigate in a room when its contents have been rearranged. Rats also adapt rapidly to movements of objects in a familiar environment. We therefore set out to investigate the neural machinery that underlies this capacity by further investigating the place cell–based map of the surroundings found in the rat hippocampus. We recorded from single CA1 pyramidal cells as rats foraged for food in a cylindrical arena (the room) containing a tall barrier (the furniture). Our main finding is a new class of cells that signal proximity to the barrier. If the barrier is fixed in position, these cells appear to be ordinary place cells. When, however, the barrier is moved, their activity moves equally and thereby conveys information about the barrier's position relative to the arena. When the barrier is removed, such cells stop firing, further suggesting they represent the barrier. Finally, if the barrier is put into a different arena where place cell activity is changed beyond recognition (“remapping”), these cells continue to discharge at the barrier. We also saw, in addition to barrier cells and place cells, a small number of cells whose activity seemed to require the barrier to be in a specific place in the environment. We conclude that barrier cells represent the location of the barrier in an environment-specific, place cell framework. The combined place + barrier cell activity thus mimics the current arrangement of the environment in an unexpectedly realistic fashion.

N--- receptor-mediated, prolonged afterdischarges of CA1 pyramidal cells following transient cerebral ischemia in the rat hippocampus in vivo

1994 ◽  
Vol 657 (1-2) ◽  
pp. 325-329 ◽  
Author(s):  
Shuhei Miyazaki ◽  
Yoichi Katayama ◽  
Makoto Furuichi ◽  
Tsuneo Kano ◽  
Atsuo Yoshino ◽  
...  
Keyword(s):  
Cerebral Ischemia ◽  
Pyramidal Cells ◽  
Transient Cerebral Ischemia ◽  
Rat Hippocampus ◽  
Ca1 Pyramidal Cells
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