Fixations recorded while participants studied photographs in a recognition memory experiment, one row per participant and image.
Format
A grouped tibble (grouped by ImageNumber and Subject) with 12,240 rows and 8 columns:
- Subject
Participant number.
- fixgroup
A
fixation_groupwith the pooled study fixations (x,yin pixels;durationandonsetin ms).- ImageVersion
Image and version shown, e.g.
"1_A".- Version
Image version (
"A"or"B").- Trial
Trial index of the first viewing.
- ImageNumber
Image identifier.
- blockstudy
Study block of the first viewing.
- ImageNumberS
Participant-image key,
"<Subject>_<ImageNumber>", matchingwynn_test$ImageNumberS.
Source
Wynn et al. eye-tracking study; built from the raw fixation report
by data-raw/process_dat.R in the source repository.
Details
Each image was studied once in each of four study blocks, and a row pools
the fixations of all four viewings: within a row's fixgroup, onsets
restart at each viewing. The pooled fixations suit density maps (for
example study templates for template_similarity); for
scanpath measures, which join consecutive rows, split the viewings first.
Fixations outside the 800 x 600 pixel image area were removed and
coordinates are relative to its top-left corner.
Examples
data(wynn_study)
head(wynn_study)
#> # A tibble: 6 × 8
#> # Groups: ImageNumber, Subject [6]
#> Subject fixgroup ImageVersion Version Trial ImageNumber blockstudy
#> <dbl> <list> <chr> <chr> <int> <fct> <int>
#> 1 5 <fxtn_grp [39 × 6]> 1_A A 18 1 1
#> 2 6 <fxtn_grp [42 × 6]> 1_A A 13 1 1
#> 3 7 <fxtn_grp [26 × 6]> 1_A A 25 1 1
#> 4 8 <fxtn_grp [30 × 6]> 1_A A 11 1 1
#> 5 9 <fxtn_grp [32 × 6]> 1_A A 15 1 1
#> 6 10 <fxtn_grp [41 × 6]> 1_A A 12 1 1
#> # ℹ 1 more variable: ImageNumberS <chr>