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. Author manuscript; available in PMC: 2016 Nov 4.
Published in final edited form as: Neuron. 2015 Nov 4;88(3):578–589. doi: 10.1016/j.neuron.2015.09.031

Figure 3. Spatial activity cannot account for time and distance firing fields.

Figure 3

(A–F) Six individual neurons recorded from different recording sessions. For each neuron there are two panels. The left panel is a spatial firing rate map, while the right panel includes two distance (A–D) or time (E–F) tuning curves. Neurons from distance-fixed sessions (A–D) are plotted in terms of distance run, while neurons from time-fixed sessions (E–F) are plotted in terms of elapsed time. The blue curve is the observed (empirical) tuning curve of a single neuron, calculated based on the actual firing of that neuron. The red curve is the model-predicted tuning curve based on the spatial firing rate map given in the left panel of each pair. Shaded region denotes 95% confidence bounds on firing rates calculated using a bootstrap method. A bin size of 1 pixel × 1 pixel with a standard deviation of 3 pixels was used for this analysis.