Retrosplenial Cortex Indexes Stability beyond the Spatial Domain

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Stephen D Auger, Eleanor A Maguire

Abstract

Retrosplenial cortex (RSC) is highly responsive to landmarks in the environment that remain fixed in a permanent location, and this has been linked with its known involvement in scene and spatial processing. However, it is unclear whether RSC representations of permanence are a purely spatial phenomenon or whether they extend into behavioral and conceptual domains. To test this, during functional MRI scanning, we had people (males and females) read three different types of sentences that described either something permanent or transient. The first two sentence types were imageable, with a focus either on a spatial landmark or on an action. The third type of sentence involved non-imageable abstract concepts. We found that, in addition to being more active for sentences describing landmarks with a permanent location in space, RSC was also significantly engaged by sentences describing stable and consistent behaviors or actions, as long as they were rooted within a concrete imageable setting. RSC was not responsive to abstract concepts, even those that embodied the notion of stability. Similarly, it was not engaged by imageable sentences with transient contents. In contrast, parahippocampal cortex was more engaged by imageable sent...Continue Reading

Citations

Jul 29, 2018·The European Journal of Neuroscience·Nicola Solari, Balázs Hangya
Sep 18, 2018·Brain and Neuroscience Advances·Anna S MitchellAndrew J D Nelson
Nov 19, 2019·Frontiers in Neural Circuits·Stephen RamanoëlAngelo Arleo
Feb 16, 2021·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Qian ChenBing Zhang

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