Neuroscience 2001 Abstract
| Presentation Number: | 953.11 |
|---|---|
| Abstract Title: | To remap or not to remap: Interactions between apparatus shape and location in place field firing properties. |
| Authors: |
Knierim, J. J.*1
; Rao, G.1
1Dept. of Neurobiology & Anatomy, University of Texas-Houston Medical School, Houston, TX |
| Primary Theme and Topics |
Cognition and Behavior - Animal Cognition and Behavior -- Learning & memory: Physiology and imaging |
| Secondary Theme and Topics | Cognition and Behavior<br />- Animal Cognition and Behavior<br />-- Cognitive learning and memory systems |
| Session: |
953. Animal cognition and behavior: learning and memory--physiology and imaging VI Poster |
| Presentation Time: | Thursday, November 15, 2001 10:00 AM-11:00 AM |
| Location: | Exhibit Hall SS-35 |
| Keywords: | CA1, PLACE CELLS, SPATIAL, NAVIGATION |
Changing the shape of an enclosure from a cylinder to a square can cause hippocampal place cells to remap the environment (Muller & Kubie 1987; Quirk et al. 1992). Lever, Cacucci, Burgess, & O'Keefe (SFN Abstract 1999) reported that remapping occurred primarily when the cylinder and square occupied different locations in the environment. We recorded place cells from ensembles in CA1, CA3, and dentate gyrus in 7 rats foraging in a gray cylinder or square, each with a white cue card. When the cylinder and square were in identical locations in the room (4 rats), and the rat was returned to a holding platform between sessions, 27/40 cells maintained the same place fields in both enclosures, 7 cells remapped, and 6 cells remapped partially (either maintaining the same field at a weaker strength or by remapping one subfield but maintaining another). When the rat was moved directly from the cylinder to an adjacently located square (5 rats), only 7/54 cells maintained the same field, 37 cells remapped, and 10 cells remapped partially. When the cells were recorded in the same cylinder located in 2 separate recording rooms (3 rats), and the rat was returned to a holding platform between sessions, 22/30 cells maintained the same place fields, 4 remapped, and 4 remapped partially. Thus, although a degree of remapping occurred in all conditions, remapping was much stronger when both the shape of the enclosure and its location were different and the rat was transported directly from one to the other. When only the shape or only the location changed, and the rat was returned to a holding platform between recording sessions, remapping was weak.
Supported by NS39456
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2001 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2001. Online.
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