gabor: Perceptual discrimination of short-duration gabor patches...

In boryspaulewicz/bhsdtr: Flexible bayesian hierarchical or non-hierarchical SDT models with or without ratings

Description

The Perceptual Awareness Scale ratings ('no experience', ..., 'absolutely clear image') of discrimination responses to gabor patches presented for 32ms or 64ms before or after the ratings were provided.

Usage

gabor

Format

A data frame with 4509 rows and 10 variables:

timestamp

Time when response was recorded

duration

Stimulus duration (ms)

trial

Trial number

acc

Accuracy: 1 = correct, 0 = incorrect

id

Unique participant identification number

order

Between-subject order manipulation: DECISION-RATING = rating after decision, RATING-DECISION = decision after rating

age

Participant's age at the time of the study (years)

gender

Participant's gender: M = male, F = female

rating

Perceptual Awareness Scale rating: 0 = 'no experience', 3 = 'absolutely clear image'

stim

Stimulus class: 0 = gabor tilted to the left, 1 = gabor tilted to the right.

Details

On each trial participants had to classify the briefly presented gabor patch as either oriented to the left or to the right using the arrow keys. The participants were also asked to rate the stimuli on a 4 point Perceptual Awareness Scale presented at the bottom of the screen. The gabor patch was immediately followed by a mask. The PAS ratings ranged from "no experience" to "absolutely clear image" and were provided either before (RATING-DECISION condition) or after (DECISION-RATING condition) pressing the arrow keys. On each trial the gabor patch was equally likely to be presented for 32ms or 64ms. Decision-rating order was a between-subject variable and gabor patch presentation duration was a within-subject variable. There were 47 participants and 48 trials per condition.

boryspaulewicz/bhsdtr documentation built on March 8, 2020, 8:24 a.m.