Lick 02.zip
This online script is intended for training a laboratory animal to respond to a stimulus by providing a reward when the desired behaviour is elicited within a specified time window. The script triggers the test stimulus at random intervals, records the behaviour and triggers reward delivery when the required criteria are met. The script also generates counts and plots vs. time of: "hits", "misses", "false positives" and "rejections" (where a rejection is a lack of response in random time windows between stimuli.
Specifically, the script is designed for studies of the type described by Paricio-Montecinos et al (2020). Here the stimulus is innocuous warming or cooling of the glabrous skin of a thirsty mouse's forepaw. The behaviour monitored is licking the spout of a water bottle and the reward is water, only delivered in response to licks during the thermal stimulus. Such studies aim to investigate perceptual thresholds and peripheral and central neural mechanisms of thermo-sensitivity.
The script might, with small modifications, also be useful for other learning or Go/No Go studies that involve different stimuli, behaviour and rewards,
e.g. visual cues eliciting lever presses for a food reward.
Reference:
Paricio-Montecinos et al. Sensory Coding of Warm Perception, Neuron 106, 830–841 (2020)
Requirements:
Hardware - Micro 1401 MkII or higher (plus appropriate hardware to generate the stimulus and provide the reward when triggered).
Software - Spike2 v9.19 or higher
calib.zip
This script allows the user to calibrate the scale and offset of waveform channels in a sampling configuration. First create a sampling configuration (or load in a previous one) and then run the script. You can sample data into a temporary data file. When sampling this data, you should make the waveform that you wish to calibrate stay at two distinct known levels for a short period of time.
You can then press the "Calibrate" button. This enables you to select the two level sections of waveform data in a channel and to specify what values they SHOULD be. The script will then alter the channel scale and offset in the sampling configuration to achieve those values.
ppulse.zip
The PPulse script sends paired pulses out through Digital Outputs 0 and 1. The time between the pulses (the inter-stimulus time) is chosen at random from a list of possible values held in a stipulated text file.
To run this script, make sure you have the sequencer files PPulse1, PPulse2 and PPulse3 in the same directory as the PPulse script. You must also have in this directory a text file containing the ISI's to use (an example text file called ISITimes is supplied).
Finally, connect Digital Outputs 0 and 1 to Event Inputs 0 and 1 on a micro 1401 (or if you are using a standard 1401 or 1401plus, connect Digital Outputs 0 and 1 to Digital Inputs 0 and 1).
The PPulseAn script is a standard analysis script which indicates how the analysis of data collected using the PPulse script might be automated.
Extended documentation (in Word format) is given for both scripts.