RECRUITING

Isolating and Mitigating Sequentially Dependent Perceptual Errors in Clinical Visual Search

Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

Remote-store-and-forward teledermatology has recently grown exponentially in popularity and use as an efficient, accurate, and cost-effective way to improve the health and well-being of countless patients. Despite advances in machine learning and computer vision, the screening and reading of dermatological images still depends on the visual system of human observers (e.g., clinicians), who receive extensive training to best recognize lesions and anomalies. In remote store-and-forward teledermatology settings, clinicians may examine hundreds of images on a daily basis, seeing several images one after the other. A main underlying assumption of their work is that clinician percepts and decisions about a current image are completely independent from prior viewings. However, we and other groups demonstrated that the visual system has visual serial dependencies (VSDs) at many levels, from perception to decision making, including in clinical tasks. These sequential dependencies, replicated hundreds of times in the literature, mean that what was seen in the past influences (and captures) what is seen and reported at this moment. Theoretically, VSDs are helpful in an autocorrelated natural world, but they are suboptimal in visual tasks conducted in artificial situations where images are not always related. Importantly, serial dependencies in perceptual processing could thus produce significant errors during diagnostic judgments of dermatological images. Our central hypothesis is that VSD can have a disruptive effect in asynchronous remote-store-and-forward teledermatology judgments that impairs accurate detection and recognition of lesions. This hypothesis is supported by our robust pilot data, which show that VSD strongly biases lesion classification in both untrained observers and expert clinicians. The rationale for the proposed research projects is that once it is known how serial dependence arises and how it impacts judgments, we can understand how to control for it. Hence, accuracy of lesion detection and diagnosis can significantly improve. The specific objectives of this proposal are to establish (Aim 1), identify (Aim 2) and mitigate (Aim 3) the impact of VSD on remote-store-and-forward dermatological judgments.

Official Title

Isolating and Mitigating Sequentially Dependent Perceptual Errors in Clinical Visual Search

Quick Facts

Study Start:2019-04-01
Study Completion:2032-10-30
Study Type:Not specified
Phase:Not Applicable
Enrollment:Not specified
Status:RECRUITING

Study ID

NCT04332783

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:18 Years
Sexes Eligible for Study:ALL
Accepts Healthy Volunteers:Yes
Standard Ages:ADULT, OLDER_ADULT
Inclusion CriteriaExclusion Criteria
  1. * Subjects must have normal or corrected to normal vision with contacts or glasses.
  1. * Subjects may not be under the age of 18 to participate.
  2. * Subjects may not participate if they are blind.

Contacts and Locations

Study Contact

Katrina Wolters, BA
CONTACT
510-642-5797‬
katrinaw@berkeley.edu

Principal Investigator

David Whitney, PhD
PRINCIPAL_INVESTIGATOR
University of California, Berkeley

Study Locations (Sites)

University of California, Berkeley
Berkeley, California, 94720
United States

Collaborators and Investigators

Sponsor: University of California, Berkeley

  • David Whitney, PhD, PRINCIPAL_INVESTIGATOR, University of California, Berkeley

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2019-04-01
Study Completion Date2032-10-30

Study Record Updates

Study Start Date2019-04-01
Study Completion Date2032-10-30

Terms related to this study

Keywords Provided by Researchers

  • Visual Perception
  • Psychophysics
  • Visual Search

Additional Relevant MeSH Terms

  • Vision