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1 February 2019

Thomas Knapen

Neuroscience Symposium

The Neuroscience Symposia are organized weekly by the Netherlands Institute for Neuroscience. The presentations are given by researchers from the institute or by guest speakers. The title and content of the symposium is usually made known in the week prior to the presentation.

Colloquium room – Netherlands Institute for Neuroscience

Thomas Knapen (Vrije Universiteit)

4:00 pm – Mapping the Dark Side: Visual Selectivity of Default Network Deactivations

Abstract
The default network (DN) activates for internally referenced mental states such as mind wandering and autobiographical memory and deactivates when participants focus externally to perform a task. The functional role of these DN deactivations remains unclear. I will present results indicating that deactivations in the DN are tuned to the spatial location of visual stimuli. These visually selective deactivations allowed us to infer the location of a visual stimulus, demonstrating that the DN contains functional visual field representations. Furthermore, we confirm our findings in the 181- subject HCP retinotopy dataset, the power of which allows us to outline retinotopic maps. Our results indicate that responses in the DN are pinioned to responses in the visual system, providing a candidate organization for the mnemonic functionality of the DN. Our results suggest that the DN may utilize sensory reference frames for higher-level cognition such as autobiographical memory and social thought.

4:45 pm – Discussion and drinks

 

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