tasks.pavlov module

Author:Dominic Hunt Reference:Value and prediction error in medial frontal cortex: integrating the single-unit and systems levels of analysis. Silvetti, M., Seurinck, R., & Verguts, T. (2011). Frontiers in Human Neuroscience, 5(August), 75. doi:10.3389/fnhum.2011.00075

class tasks.pavlov.Pavlov(rewMag=4, rewProb=array([0.87, 0.33]), stimMag=1, stimDur=20, rewDur=4, simDur=30, stimRepeats=7)

Bases: tasks.taskTemplate.Task

Based on the Silvetti et al 2011 paper “Value and prediction error in medial frontal cortex: integrating the single-unit and systems levels of analysis.”

Many methods are inherited from the tasks.taskTemplate.Task class. Refer to its documentation for missing methods.

Name

The name of the class used when recording what has been used.

Type:string

Parameters:

• rewMag (float, optional) – The size of the stimulus. Default 4
• rewProb (array of floats, optional) – The probabilities of each stimulus producing a reward. Default [0.85,0.33]
• stimMag (float, optional) – The size of the stimulus. Default 1
• stimDur (int, optional) – The duration, in tens of ms, that the stimulus is produced for. This should be longer than rewDur since rewDur is set to end when stimDur ends. Default 200
• rewDur (int, optional) – The duration, in tens of ms, that the reward is produced for. Default 40
• simDur (int, optional) – The duration, in tens of ms, that each stimulus event is run for. Default 300
• stimRepeats (int, optional) – The number of times a stimulus is introduced. Default 72

feedback()

Responds to the action from the participant

proceed()

Updates the task after feedback

receiveAction(action)

Receives the next action from the participant

Parameters:action (int or string) – The action taken by the model

returnTaskState()

Returns all the relevant data for this task run

Returns:results – A dictionary containing the class parameters as well as the other useful data Return type:dictionary

storeState()

Stores the state of all the important variables so that they can be output later

tasks.pavlov.pavlovStimTemporal()

Passes the pavlov stimuli to models that cope with stimuli and rewards that have a duration.

Returns:pavlovStim – The function expects to be passed an event with three components: (stim,rew,stimDur)``and an action (unused) and yield a series of events ``t,c,r`. stim is the value of the stimulus. It is expected to be a list-like object. rew is a list containing the reward for each trialstep. The reward is expected to be a float. stimDur is the duration of the stimulus, an int. This should be less than the length of rew. c the stimulus. r the reward. t is the time Return type:function

tasks.pavlov.Name

The identifier of the function

Type:string