Right-to-Left Stimuli

Configure the mapping

In Step 2, check Right-to-left reading language. Enter region names in reading/display order, with region 1 at the rightmost starting position. The sentence offset is the right edge from which EyeSort advances leftward.

Region width still equals literal character count × pixels per character. Stored boundaries remain [left, right], but their construction proceeds toward smaller X coordinates.

Direction semantics

EyeSort reverses the forward/backward interpretation: decreasing X is forward in RTL, increasing X is backward. The same >5 px incoming and >10 px outgoing thresholds apply.

Validate before labeling

Inspect every region’s text and boundary order in Inspect Parsed Regions. Confirm sample fixation X values map to intended regions and that known progressive/regressive saccades satisfy the expected direction.

EEG.eyesort_field_names.rtl
EEG.region_names

RTL support does not remove other 1.0 constraints: stimuli must be single-line, fixed-width, uniformly spaced, and represented by a consistent named-region schema.