H2020Индивидуална стипендия2016–2018

Perceptual Dominancy · Using Psychophysical And Neuroimaging Tools To Identify The Mechanism Underlying Perceptual Dominancy In Vision

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-07-01 → 2018-06-30
Финансиране от ЕС: 175 420 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Механизмите на зрението се анализират, за да се разбере защо при няколко възможни тълкувания на една картина виждаме само едно от тях. Познаването на тези процеси помага за разработването на по-добри медицински инструменти и софтуер за хирурзи.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Using Psychophysical And Neuroimaging Tools To Identify The Mechanism Underlying Perceptual Dominancy In Vision

When we open our eyes, a massive amount of unstructured information falls on the retina. The construction of the bits and pieces of this information into a coherent percept of the environment is aided by perceptual organization: Grouping principles are utilized in order to determine which visual elements are ‘linked together’ and are segregated from other elements. The traditional theories of perceptual organization assumed that grouping is a single, low-level, pre-attentive process that provides preliminary units for more elaborate attentional processing. Today, perceptual organization is thought of as multiplicity of multi-stage, iterative processes, with different attentional demands, time courses, developmental progression, and neural correlates. Still, there is a lack of knowledge about the mechanism by which the competition between alternative organizations is resolved. The current study was designed to fill this gap using behavioral measures (i.e., accuracy and reaction times) as well as neuroimaging tools (i.e., EEG). In simple terms, the current study concerned the following questions: Why do we perceive one visual interpretation and not another one, although several alternatives are possible? What happens to the interpretations that we do not consciously experience? By exploring the relationships of conflicting visual stimuli we reveal the processes used in the brain in order to create this unified experience, that ultimately allows us to manage in our environment without stumbling upon and bumping into the objects around us. Advancing our knowledge of how the visual system works allows for advances in technology, such as the development of apparatus and software that can be used in medical applications, for example, providing sergeants better tools to detect tumors in a cluttered x-ray or MRI scans, or in rehabilitation of brain injuries and loss of vision. The overall objectives were: 1. Identifying the factors that contribute to the dynamics of the time course of the competition and the relations between them 2. Evaluating the impact of iterations (i.e., extent of visual encoding) within the time course of the competition 3. Identifying the neural correlates of the competition between organizations

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Grouping principles are utilized for the construction of visual information into coherent percepts. Several grouping principles are usually present in the same scene and often lead to several possible organizations. However, our conscious percept is usually of one stable organization at a time. Very little is known about the mechanism by which the competition between alternative organizations is resolved. The proposed study is designed to fill this gap, and to reveal the mechanism using behavioral measures (i.e., accuracy and reaction times) as well as neuroimaging tools (i.e., EEG). The specific research objectives are: (1) Identifying the factors that affect the competition and their relations; (2) Evaluating the roles of visual encoding and mental representations in the competition; and (3) Identifying the neural correlates of the competition.Training objectives: (1) Gain knowledge in new research methods (i.e., EEG); (2) Enhance experience in mentoring and supervision to improve transfer of knowledge; (3) Refine skills in funding applications and project management; (4) Extend track record of conference presentations and publications; and (5) Expand involvement in gender issues. During the fellowship I will acquire new knowledge and skills in neuroscience to complement my expertise in cognitive psychology research. Intensive hands-on training using state-of-the-art equipment and facilities will be provided under the close supervision of world-class expert. Since there is a growing demand in universities in Europe and worldwide for vision researchers showing inter-disciplinary approaches and skills, the fellowship will have a tremendous impact on my career and open more job opportunities for me.The host lab offers a multidisciplinary approach, including computational modeling, psychophysical and clinical research, and neuroimaging. Thus, this fellowship holds endless possibilities for prosperous and innovative collaborations.

Оригинален текст от CORDIS (на английски).

Участници

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE · LausanneКоординаторШвейцария