Data from: Cortical reactivation of spatial and non-spatial features coordinates with hippocampus to form a memory dialogue
Data files
Oct 30, 2023 version files 9.54 GB
Abstract
Episodic memories comprise diverse attributes of experience distributed across neocortical areas. The hippocampus is integral to rapidly binding these diffuse representations, as they occur, to be later reinstated. However, the nature of the information exchanged during this hippocampal-cortical dialogue remains poorly understood. A recent study has shown that the secondary motor cortex carries two types of representations: place cell-like activity, which were impaired by hippocampal lesions, and responses tied to visuo-tactile cues, which became more pronounced following hippocampal lesions. Using two-photon Ca2+ imaging to record neuronal activities in the secondary motor cortex of male Thy1-GCaMP6s mice, we assessed the cortical retrieval of spatial and non-spatial attributes from previous explorations in a virtual environment. We show that, following navigation, spontaneous resting state reactivations convey varying degrees of spatial (trajectory sequences) and non-spatial (visuo-tactile attributes) information, while reactivations of non-spatial attributes tend to precede reactivations of spatial representations surrounding hippocampal sharp-wave ripples.
README: Cortical reactivation of spatial and non-spatial features coordinates with hippocampus to form a memory dialogue
https://doi.org/10.5061/dryad.1ns1rn91c
Deconvolved calcium traces, behavior, LFP and ROIs masks.
Description of the data and file structure
The data is organized as follow:
-- animal/
-- yyyy_mm_dd/
|-- 1/
| -- plane1/ | |-- deconv.mat |
-- masks_neurons.mat
|-- 2/
| -- plane1/ | |-- deconv.mat |
-- masks_neurons.mat
|-- 3/
| -- plane1/ | |-- deconv.mat |
-- masks_neurons.mat
|-- yyyy_mm_dd_1.abf
|-- yyyy_mm_dd_2.abf
|-- yyyy_mm_dd_3.abf
`-- channels.mat
Starting from the top, we have the animal number, followed by the date of recording. REST1, RUN and REST2 then follow as directories 1
, 2
and 3
. Under the plane1
folder, deconv,mat
contains the matrix of deconvolved calcium transients (frames by neurons), while masks_neurons.mat
contains the ROIs pixel identities of each neuron. The file channels.mat
contains a vector defining the channels of the abf files. Specifically, we find [frame pules, encoder A, encoder B, reward valve trigger, N/A, LFP, N/A]
. The associated abf files are suffixed by the recording block (i.e., 1, 2 and 3).