https://doi.org/10.5061/dryad.8cz8w9gxj

These are single-unit data (.mat file) from optogenetically identified dopamine neurons in the lateral VTA. The recording coordinate from each mouse is indicated in a file, 'Coordinate_Information.mat.'
 
These dopamine neurons were recorded in four different classical conditioning tasks. A summary of the task conditions is described in Table 1 of the original paper (Matsumoto et al., Elife, 2016).

Description of the data and file structure

Example:
The dataset 'hr036_2014-04-02_14-17-54_TT1_1_Mixed.mat' contains Ephys data from a single dopamine neuron. This data was obtained using tetrode 1, which was implanted in the mouse ‘hr036’ on April 2, 2014. The label ‘Mixed’ indicates the task name used.
 
Each neuron’s data contains the following information:
taskname: describe the task name that was used to record this neuron.
 
labels: you will find information related to 'odor' and 'trial type,' which correspond to the 'odorID' and 'trialType' used in the 'events' data. For example, 'labels.odor' contains a string like '1:water90,' indicating that 'odorID=1' (matching the 'odorID' used in 'events') represents a '90% water CS.' Likewise, 'labels.trialtype' contains a string such as '1:CS_water_US_water,' signifying that 'trialType=1' (matching the 'trialType' used in 'events') represents a 'water CS followed by water US' trial type."
 
events: contains timestamps (ts), odor IDs (odorID), and trial types (trialType).
ts (in milliseconds): time stamps for the following events—odorOn, odorOff, rewardOn, airpuffOn, freeRewardOn, freeAirpuffOn, freeLaserOn, and trialStart.
odorID & trialType: These fields contain odor ID and trial type information for each behavioral task. Further details about odorID and trialType can be found in the 'labels' section.

The total number of trials in a session corresponds to the length of 'event.odorOn.' NaNs in 'event.odorOn,' 'event.odorOff,' and 'event.odorID' indicate free reward or free airpuff trials. NaNs in 'event.rewardOn' indicate no reward deliveries in these trials, and NaNs in 'event.airpuffOn' indicate no airpuffs in these trials.

The following event variables ('laserOn,' 'laserOff,' 'firstLick,' 'leverOn' under 'events') are not related to this behavioral task and do not contain any data; they are all NaNs. 
 
responses: includes spike and lick timestamps in milliseconds, along with a summary for optogenetic cell identification.
 
checkLaser: checkLaser: contains some results of raw and filtered waveforms for spontaneous spikes and light-evoked spikes etc. NaNs indicate that no light-evoked spikes were detected within a specific time window after light stimulations.
 
header: refers to the original source data address.

Sharing/Access information

Links to other publicly accessible locations of the data:

• None