Publication

Feature integration but not feature separation can be modulated by TMS

Michael Herzog, Johannes Rüter
2010
Conference Papers

Abstract

How the brain integrates visual information across time into coherent percepts is an open question. Here, we investigated this integration using a feature fusion paradigm. In feature fusion, two stimuli are presented in immediate succession. The stimuli are not perceived individually but as one fused stimulus. For example, a left and a right offset Vernier presented in rapid succession are perceived as one Vernier that is nearly aligned. It has been shown that feature fusion can be modulated by transcranial magnet stimulation (TMS) over the occipital cortex for a surprisingly long duration of 400 ms, showing that neural representations interact for this duration. Here, we show that these Vernier stimuli are perceived individually if separated by interstimulus interval (ISI) of only 20 ms. TMS has no effect on the perception of either of the two Verniers. If instead of an ISI a pattern mask is presented for 20 ms, Verniers fuse again and fusion can be modulated by TMS. Our results suggest that TMS can affect Vernier representations only when features are bound into one object, but not when the very same features belong to different objects. [Johannes Rüter is supported by the Swiss National Science Foundation]

Official source

https://infoscience.epfl.ch/entities/publication/1c6ae6f2-fd4d-4757-9e79-4857305ae9b6

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Michael Herzog, Johannes Rüter
2010
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/1c6ae6f2-fd4d-4757-9e79-4857305ae9b6

About this result

Related concepts (18)

Visual cortex

The visual cortex of the brain is the area of the cerebral cortex that processes visual information. It is located in the occipital lobe. Sensory input originating from the eyes travels through the lateral geniculate nucleus in the thalamus and then reaches the visual cortex. The area of the visual cortex that receives the sensory input from the lateral geniculate nucleus is the primary visual cortex, also known as visual area 1 (V1), Brodmann area 17, or the striate cortex.

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Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices designed to harness this energy are known as fusion reactors. Research into fusion reactors began in the 1940s, but as of 2023, no device has reached net power. Fusion processes require fuel and a confined environment with sufficient temperature, pressure, and confinement time to create a plasma in which fusion can occur.

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