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Rule based and information integration category learning

Citation

Freeman, John; Broschard, Matthew (2020), Rule based and information integration category learning, Dryad, Dataset, https://doi.org/10.5061/dryad.qv9s4mwbm

Abstract

The following dataset includes sessions from rats and humans learning and generalizing to Rule-based and Information Integration categories. Here, category exemplars are Gabor patches, which are circular stimuli that contain black and white gratings. Across exemplars, these gratings can change in their spatial frequency and orientation. For Rule-based tasks, only one stimulus dimension (i.e., spatial frequency or orientation) is category-relevant, and the other dimension varies randomly. For Information Integration tasks, both stimulus dimensions (i.e., spatial frequency and orientation) are category-relevant. On each learning trial, participants are presented with a category exemplar and must decide its category membership. Feedback guides learning. Rats are trained using a touchscreen apparatus, whereas humans are trained using a desktop computer. 

Usage Notes

Trial Information: Rat

Each corresponds to a column in the data file.

    RATID = 1;
    SEX = 2; MALE = 1; FEMALE = 2;
    CONDITION = 3; RBF = 1; RBO = 2; IIP = 3; IIN = 4;
    SESSION = 4;
    TRIAL_NUMBER = 5;
    FREQUENCY = 6;
    ORIENTATION = 7;
    CATEGORY = 8; CATA = 1; CATB = 2;
    CORRECT_CHOICE = 9; LEFT = 1; RIGHT = 2;
    CHOICE_SIDE = 10; LEFT = 1; RIGHT = 2;
    ACCURACY = 11; CORRECT = 1; INCORRECT = 0;
    STAR_RT = 12;
    CUERT_1 = 13;
    CUERT_2 = 14;
    CUERT_3 = 15;
    CHOICERT = 16;
    REWARDRT = 17;
    STARX = 18;
    STARY = 19;
    CUEX_1 = 20;
    CUEY_1 = 21;
    CUEX_2 = 22;
    CUEY_2 = 23;
    CUEX_3 = 24;
    CUEY_3 = 25;
    CHOICEX = 26;
    CHOICEY = 27;
    REWARDX = 28;
    REWARDY = 29;
    TRIALTYPE = 30; TRAINING = 1; TESTING = 2;

Additional details

-Condition: RBF and RBO refer to the two rule-based tasks (RBF: spatial frequency is the relevant dimension; RBO: orientation is the relevant dimension).
-Condition: IIP and IIN refer to the two information integration tasks (IIP: RBF distributions are rotated 45 degrees. Thus, distributions have a positive slope; IIN: RBF distributions are rotated -45 degrees, and the distributions have a negative slope).

-Frequency and Orientation refer to the physical stimulus values of each exemplar (and each range from 0 to 100).

-In the trial sequence, the rat initiates each trial by pressing a star stimulus at the center of the touchscreen.  For each trial, RT and the 'x' and y' coordinates of this touch are provided (STAR_RT, STARX, STARY)

-After a touch of the star, an exemplar is presented at the center of the screen (the cue phase), and the rat must touch this cue three times for each trial and for each touch of the cue- RT, x and y coordinates are provide (CUERT_1 ...,  CUEX_1 ..., CUEY_1 ...)

-After three touches of the cue, report key appear on sides of the screen. The rat must touch either key (CHOICERT, CHOICEX, CHOICEY).

-For correct responses, a white box appears. One touch of the white box delivers a food pellet (REWARDRT, REWARDX, REWARDY)

-Rats were given training sessions (each containing 80 trials) until a learning criterion was met (75% accuracy in both categories on 2 consecutive sessions). Then, 5 testing sessions were given.

 

Trial Information: Human

SUBJECT = 1;
CONDITION = 2; RB = 1; II = 2;
TRIALNUMBER = 3;
FREQUENCY = 4;
ORIENTATION = 5;
CATEGORY = 6; CATA = 1; CATB = 2;
CORRECT_RESPONSE = 7; Q = 1; P = 2;
CHOICE_RESPONSE = 8; Q = 1; P = 2;
ACCURACY = 9; CORRECT = 1; INCORRECT = 2;
START_RT = 10;
CHOICE_RT = 11;
TRIALTYPE = 12; TRAINING = 1; TESTING = 2;

Additional details

-Condition: RB refers to the rule-based task. II refers to the information integration task.

-Frequency and Orientation refer to the physical stimulus values of each exemplar (and each range from 0 to 100).

-In the trial sequence, the participant initiates each trial by pressing the spacebar (STARTRT)

-Then, an exemplar is presented at the center of the screen, and the participant decides its category membership by pressing either 'q' or 'p' on the keyboard (CHOICERT)

-Participants were given two blocks (with 80 trials each) of training trials. Then, participants were given four blocks (each 80 trials) of testing trials.

Funding

National Institutes of Health, Award: P01-HD080679