WAlterTask

class hive.implementation.w_alter_task.WAlterTask(action, trigger, sequence: Optional[List[int]] = None)

Bases: AbstractSequenceTask

Protocol for W Alternation Task

In this protocol, we put an animal in 3-arms maze called Center, Right and Left arms. Each experiment arm changed their position in the sequence.

Valid sequences are: - C-R-C-L - C-L-C-R - R-C-L-C - L-C-R-C

Fail conditions and consequences on the next steps

• Re-enter in the same arm Example : C-R-R = fail + next expected steps: C-R-R]-C-L

• Enter in wrong arm instead of C Example : R-C-L-R = fail + next expected steps: R-C-L-R]-C-L

Use in config file

Task:
  mode : WAlterTask
  options:
    max_trial: 250                 # (int) maximal number the animal can visit.
    time_out: 3600 # 1hr           # (int): maximal duration the task can perform.
    time_stay: 600 # 10 min        # (int): maximal duration the animal can stay on a platform.
    sequence:
        - 1 # Left arm id is 1
        - 2 # Center arm id is 2
        - 3 # Right arm id 3

  trigger :
    - name: Keyboard or Tracking
    - name: Timer
    - name: Server

Devices used

Food_delivery devices named in F1, index from 1 to 3.

Attributes Summary

sequence	sequence [Left, Center, Right]
use_door_devices	No doors are automatically used in this protocol
use_food_devices	Use F1, F2, F3 as food devices.

Methods Summary

give_food(visit_arm, result)	invoked when the animal visit the arm.
logging_result_visit_arm(visit_arm)
new_seq_control()	Alternation protocol on W-maze.

Attributes Documentation

sequence

sequence [Left, Center, Right]

use_door_devices

No doors are automatically used in this protocol

use_food_devices

Use F1, F2, F3 as food devices.

Needs to be added as virtual id in the config file.

Methods Documentation

give_food(visit_arm: int, result: SequenceStepResult)

invoked when the animal visit the arm.

This function purpose to send commands to food/door devices.

Parameters

• visit_arm – where the animal visiting

• result – the result of this visiting

logging_result_visit_arm(visit_arm)

new_seq_control() → SequenceControl

Alternation protocol on W-maze.

Check the local history for valid sequence. If it fails, the local history is changed to match the future valid sequence. The first step is always a success. If the first step is C, the second step can be R or L. After that the sequence is to switch between R and L with always passing by C between.