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Идёт набор NCT06587113

An Investigation of Attentional and Inhibitory Processes During Active Visual Search in Humans

Без фазы С лечением Eye Movements Attention Executive Function

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: Contour Search Task, Stop signal Task, Useful field of View, Attentional capture search task.
Кому может быть актуально
Состояния в реестре: Eye Movements, Attention, Executive Function. Базовые параметры: 18 лет — 65 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
США
Следующий шаг
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Официальное название

Contributions of Attentional and Inhibitory Functioning to Saccadic Decisions

Обзор

The goal of this study is to investigate the finding that there are large individual differences in how participants move their eyes during active visual search. For example, some individuals tend to fixate, that is point their eyes steadily at a single location, for longer than other individuals before moving to another location. This experiment will use behavioral tasks to measure an individual's attentional and inhibitory functioning, and then see how each of these contributes to between-participant variability in eye movement behavior during visual search.

Подробное описание

To accomplish the goal of understanding the source of individual variability in eye movement patterns, each participant will complete three separate tasks. The first task will require participants to find a target and eye movements will be measured to assess individual differences in fixation duration and other types of eye movement behavior. A second task will evaluate attentional functioning over the visual field by requiring participants to detect briefly-presented targets using their peripheral vision. Finally, a third task will assess inhibitory functioning by having participants attempt to stop eye movements after they have been programmed.

Вмешательства

  • Другое Contour Search Task
    In this task, participants sit in front of a computer screen with their head in a chinrest to control for distance from the monitor and eye-tracking equipment. For the visual search task, participants will search for a visual target among distractors and make a response regarding its orientation. The target is defined by a contour formed through oriented Gabor patches.
  • Поведенческое Stop signal Task
    In this task, participants sit in front of a computer screen with their head in a chinrest to control for distance from the monitor and eye-tracking equipment. For the stop-signal task, participants will make an eye movement to a target that appears on the screen, except on trials where a visual signal appears indicating they should cancel this behavior.
  • Поведенческое Useful field of View
    In this task, participants sit in front of a computer screen with their head in a chinrest to control for distance from the monitor and eye-tracking equipment. In the useful field of view task, participants will report the location of a briefly-presented and masked target, while also responding to the identify of a central target in some blocks.
  • Поведенческое Attentional capture search task
    In this task, participants sit in front of a computer screen with their head in a chinrest to control for distance from the monitor and eye-tracking equipment. For this visual search task, participants will search for a visual target among distractors and make a response regarding its orientation. The target is defined as a unique shape, and is sometimes shown with a salient distractor.

Первичные конечные точки

  • First fixation duration during visual search [Срок оценки: During visual search task]
  • Fixation count during visual search [Срок оценки: During visual search task]
  • Stop signal reaction time [Срок оценки: During inhibitory task]
  • Useful field of view thresholding [Срок оценки: During attention task]
  • Useful field of view dual task performance [Срок оценки: During attention task]
  • Oculomotor capture by salient distractor [Срок оценки: During visual search task]
Вторичные конечные точки (1)
  • Average fixation duration during visual search [Срок оценки: During the visual search task]

Критерии участия

Критерии включения

  • 18-65 years old

Критерии исключения

  • Self-reported history of neurological illness
  • Uncorrected vision problems

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Распределение
Рандомизированное
Модель
Параллельные группы
Маскирование
Открытое
Основная цель
Фундаментальное исследование

Центры проведения

США · 1 центр
  • University of Colorado Denver — Denver

Идентификаторы

NCT: NCT06587113 · 22-1148 · R15EY035056-01

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗