H2020Индивидуална стипендия2017–2019

VisionAtSecondGlance · Vision at a second glance - how memories interact with and depend on information processing in the human visual cortex

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

Период: 2017-09-01 → 2019-08-31
Финансиране от ЕС: 171 461 €
Участници: 1
Схема: MSCA-IF-EF-ST

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Накратко на български

Невронните механизми в зрителната кора определят как мозъкът обработва повтарящи се изображения и как осмислянето на информацията помага за запомнянето ѝ. Разбирането на тези процеси помага за изясняване на работата на паметта и може да вдъхнови нови подходи при създаването на изкуствен интелект.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Vision at a second glance - how memories interact with and depend on information processing in the human visual cortex

Previous neuroscientific research has shown that the human brain can use previous experience to effectively process more image information with less neural activation in the visual cortex. How the human brain accomplished this feat remains a scientific puzzle, which solution could lead to important insights into how the brain integrates memories and current sensory experiences. Such insights would shed light on the fundamental principles of brain function and could inspire new approaches for developing brain-inspired AI systems. To realize this, we have investigated which neural mechanisms can best explain the fact that stimulus repetition reduces brain responses in the visual cortex – a phenomenon referred to as repetition suppression. The second aspect of the research program relates to the phenomenon that we are better able to remember images when we actively process the meaning of the image – a mental process referred to as ‘deep encoding’. The ambition of this program is to unravel the so far unknown neural mechanisms of deep encoding and thereby shed light on how the integration of sensory information into existing knowledge aids the formation of long-lasting memories. This insight will lead to a better understanding of the fundamental processes underlying the formation of memories and could inspire the development of new techniques for boosting human memory function.

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

Цел на проекта

The cognitive faculties of memory and vision are heavily intertwined. Therefore, understanding the brain processes supporting these faculties critically depends on insights into vision-memory interactions.The aim of this research program is to obtain novel insights into two important aspects of this interaction. First of all, we will determine how memories change the way in which object image information is processed within the visual cortex. To this end, we will study the neural consequences of stimulus repetition and their relation to the behavioral effect of repetition priming. Second, we will determine how semantic feature encoding depth within the human inferior temporal cortex affects the formation of long term memories. New insights will be obtained by using simultaneous EEG-fMRI recordings – with which we can simultaneously measure three different hypothesized mechanisms of repetition priming – and by combining advanced behavioral experiments with state-of the art pattern analysis of fMRI and EEG data – which enables us to assess how memories affect the information content of brain response patterns and vice versa. In addition, we will investigate how stimulus repetition changes neural communication between brain areas and determine if stimulus repetition selectively reduces the extent to which brain response patterns encode non-diagnostic stimulus features.The data required to realize these objectives will be generated by two behavioral experiments (that determine the visual and semantic feature profiles for each repeated object image), two fMRI localizer sessions (with which we assess the feature tuning of fMRI voxels in the visual cortex), a combined EEG-fMRI session (with which we record stimulus repetition effects) and a subsequent memory test session (to assess subsequent memory for all repeated objects).Data integration entails the analysis of five key aspects of the data and is expected to generate five high-impact publications.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITAETSKLINIKUM HAMBURG-EPPENDORF · HamburgКоординаторГермания