guides:ppintro
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| (Figure from Malhotra et al. 2012) Each spike is assigned a color based on the /phase/ of the theta rhythm (a component of the LFP or "local field potential") at which it occurs. Note the smooth color change as the animal runs through the place field. | (Figure from Malhotra et al. 2012) Each spike is assigned a color based on the /phase/ of the theta rhythm (a component of the LFP or "local field potential") at which it occurs. Note the smooth color change as the animal runs through the place field. | ||
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| + | Thus, when looking at a typical place cell like the above, phase precession manifests as (1) a relationship between *location* on the maze and the theta phase of a place cell's spikes, as shown when plotting spikes "in space" and (2) a relationship between *time* and the theta phase of a place cell's spikes, as shown when plotting spikes "in time" aligned to the LFP. | ||
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| + | When a rat runs through a place field, space and time will be correlated, so it is not a priori clear if either one is somehow "primary". There are numerous papers that explore this issue. | ||
| An important conceptual step is to extend this idea to what happens in a population of place cells which are all phase precessing: | An important conceptual step is to extend this idea to what happens in a population of place cells which are all phase precessing: | ||
guides/ppintro.txt ยท Last modified: 2018/07/07 10:19 (external edit)
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