Trial Outcomes & Findings for Probing the Role of Feature Dimension Maps in Visual Cognition: Impact of Salience Level (Eye-tracking Follow-up Study) (NCT NCT06852534)

Results Overview

For each condition, we compute the probability that participants instructed to free-view the display fixate the salient location on the screen (reported for highest contrast condition)

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

20 participants

Primary outcome timeframe

Through study completion, an average of one week

Results posted on

2026-05-11

Participant Flow

Participants recruited from local UCSB community via IRB-approved advertisements (flyers; email lists)

Random effects study, so all participants engaged with all conditions

Participant milestones

Participant milestones
Measure	Manipulations of Graded Feature Salience (Expt 1.1) Participants will view stimuli made salient based on feature contrast in one feature dimensions (color or motion direction; or checkerboard luminance contrast). The degree to which a location is salient will be manipulated based on the feature contrast across multiple values
Overall Study STARTED	20
Overall Study COMPLETED	20
Overall Study NOT COMPLETED	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Manipulations of Graded Feature Salience (Expt 1.1) n=20 Participants Participants will view stimuli made salient based on feature contrast in one feature dimensions (color or motion direction; or checkerboard luminance contrast). The degree to which a location is salient will be manipulated based on the feature contrast across multiple values
Age, Categorical <=18 years	0 Participants n=20 Participants
Age, Categorical Between 18 and 65 years	20 Participants n=20 Participants
Age, Categorical >=65 years	0 Participants n=20 Participants
Sex: Female, Male Female	16 Participants n=20 Participants
Sex: Female, Male Male	4 Participants n=20 Participants

PRIMARY outcome

Timeframe: Through study completion, an average of one week

For each condition, we compute the probability that participants instructed to free-view the display fixate the salient location on the screen (reported for highest contrast condition)

Outcome measures

Outcome measures
Measure	Manipulations of Graded Feature Salience (Expt 1.1) n=20 Participants Participants will view stimuli made salient based on feature contrast in one feature dimensions (color or motion direction; or checkerboard luminance contrast). The degree to which a location is salient will be manipulated based on the feature contrast across multiple values
Gaze Position - Probability of Fixation at Salient Position Checkerboard (high contrast)	.209 Probability Standard Error .019
Gaze Position - Probability of Fixation at Salient Position Salient motion (high contrast)	.191 Probability Standard Error .014
Gaze Position - Probability of Fixation at Salient Position Salient color (high contrast)	.207 Probability Standard Error .014

Adverse Events

Manipulations of Graded Feature Salience (Expt 1.1)

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Thomas Sprague

UC Santa Barbara

Phone: 8322794775

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee
Publication restrictions are in place