H2020Индивидуална стипендия2020–2022

VisPrepMem · I have seen that before: Pattern completion in the human visual system and its role for memory

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

Период: 2020-09-01 → 2022-08-31
Финансиране от ЕС: 175 572 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Визуалната система на мозъка предвижда бъдещи събития, като например траекторията на тенис топка, базирайки се на минали опити. Разбирането на този механизъм и връзката му с паметта помага при изучаването на заболявания, при които тези процеси са нарушени.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

I have seen that before: Pattern completion in the human visual system and its role for memory

The visual system in the brain is an anticipatory system: In order to hit a tennis ball during a match, parts of the brain calculate the future trajectory of the ball based on its past travel through the air to enable you to hit the ball. Previous research has shown that the visual system of the brain preplays information about this future trajectory based on previous experience.This pattern completion is preceding the expected trajectory, meaning that the brain activity arises before the actual movement of the ball would happen. This makes this so-called visual preplay an anticipating mechanism. In this project, the researcher investigated this visual preplay in more detail, aiming at a better understanding of both the visual and memory system as well as its interplay. How does the visual system anticipate such visual movement or other recurring visual events? How is this linked with memory — and where are those memories stored? Answering these questions will tell us more about how the human brain anticipates the world around it. Ultimately, this knowledge can help us in gaining a better understanding of disorders and diseases in which this mechanism might be impaired.

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

Цел на проекта

The visual system is an anticipatory system. For example, in order to hit a tennis ball during a match, parts of the brain calculate the future trajectory of the tennis ball based on its past travel through the air to enable you to hit the ball. A recent study by Ekman et al. (2017) demonstrated how the visual system anticipates a ball’s trajectory in such a scenario. In their functional magnetic resonance imaging (fMRI) study, they found temporally compressed pattern completion in primary visual cortex for a previously learned rapid stimulus sequence (simulating a moving dot) following the presentation of only the very first stimulus. This visual preplay activity reflects an anticipation of the future trajectory of a moving object based on previous experience, thereby intersecting vision and memory. Interestingly, the mechanism of pattern completion plays a big role in the reinstatement of memory traces in classical memory experiments. Whether the visual preplay effect is similar to the pattern completion in memory reinstatement, and whether the memory replay effect might be guided by visual preplay is currently unknown. The proposed project will provide a better understanding of the nature of the visual preplay effect and its relation to memory. It will investigate the neural oscillations induced by the visual preplay effect together with its temporal unfolding, providing insight into information processing and communication between brain areas. It will also examine a possible link between this visual effect and memory by embedding the preplay experiment into a memory paradigm. The combination of magnetoencephalography (MEG) and fMRI methods together with state-of-the-art signal processing and machine learning will enable a comprehensive investigation of this effect at the boundary between vision and memory, thereby advancing our understanding of both the visual and memory system and, in particular, their interplay.

Оригинален текст от CORDIS (на английски).

Участници

STICHTING RADBOUD UNIVERSITEIT · NijmegenКоординаторНидерландия