Abstract:
:In the cognitive mapping theory of hippocampal function, currently active place cells represent a rat's spatial location (J. O'Keefe & L. Nadel, 1978). A systematic shift of firing field locations should therefore produce a similar shift in a rat's judgment of its location. A. A. Fenton, G. Csizmadia, and R. U. Muller (2000a) recorded place cells in cylinders with 2 cue cards separated by 135 degrees . When the separation was changed, firing fields moved systematically, as described by a vector-field equation (A. A. Fenton, G. Csizmadia, & R. U. Muller, 2000b). Given this cohesive movement of firing fields, the mapping theory predicts that a rat's decisions about the location of an unmarked goal should move after card separation changes, as described by the vector-field equation. The authors tested this reasoning with a task in which the rat earned a food reward by pausing in a small, unmarked goal zone. When cues were shifted in the absence of reward, goal choice shifts were accurately predicted by the vector-field equation, providing strong support for the notion that a rat's judgment of its spatial location is intimately related to the across-cell discharge pattern of simultaneously active place cells.
journal_name
Behav Neuroscijournal_title
Behavioral neuroscienceauthors
Kubie JL,Fenton A,Novikov N,Touretzky D,Muller RUdoi
10.1037/0735-7044.121.4.751subject
Has Abstractpub_date
2007-08-01 00:00:00pages
751-63issue
4eissn
0735-7044issn
1939-0084pii
2007-11112-012journal_volume
121pub_type
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