During Running in Place, Grid Cells Integrate Elapsed Time and Distance Run
| Autor: | Michael E. Hasselmo, Robert J. Robinson, Mark P. Brandon, Michael A. Connerney, Benjamin J. Kraus, Howard Eichenbaum |
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| Rok vydání: | 2015 |
| Předmět: |
Male
Time information Time Factors genetic structures Neuroscience(all) Real-time computing Action Potentials Sensory system Article Running 03 medical and health sciences 0302 clinical medicine Treadmill running Path integration Animals Entorhinal Cortex Rats Long-Evans Sensory cue 030304 developmental biology 0303 health sciences General Neuroscience Information processing Grid cell Electrodes Implanted Rats Exercise Test Psychology Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Neuron. 88(3):578-589 |
| ISSN: | 0896-6273 |
| DOI: | 10.1016/j.neuron.2015.09.031 |
| Popis: | SummaryThe spatial scale of grid cells may be provided by self-generated motion information or by external sensory information from environmental cues. To determine whether grid cell activity reflects distance traveled or elapsed time independent of external information, we recorded grid cells as animals ran in place on a treadmill. Grid cell activity was only weakly influenced by location, but most grid cells and other neurons recorded from the same electrodes strongly signaled a combination of distance and time, with some signaling only distance or time. Grid cells were more sharply tuned to time and distance than non-grid cells. Many grid cells exhibited multiple firing fields during treadmill running, parallel to the periodic firing fields observed in open fields, suggesting a common mode of information processing. These observations indicate that, in the absence of external dynamic cues, grid cells integrate self-generated distance and time information to encode a representation of experience. |
| Databáze: | OpenAIRE |
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