Study: Adjacent domain-general and sensory-biased regions
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Files
There is also a preprint version of this study here.
FULL TITLE:
Precise topology of adjacent domain-general and sensory-biased regions in the human brain
SPECIES:
Human
ABSTRACT:
Recent functional MRI studies identified sensory-biased regions across much of the association cortices and cerebellum. However, their anatomical relationship to multiple-demand (MD) regions, characterized as domain-general due to their co-activation during multiple cognitive demands, remains unclear. For a better anatomical delineation, we used multimodal MRI techniques of the Human Connectome Project to scan subjects performing visual and auditory versions of a working memory (WM) task. The contrast between hard and easy WM showed strong domain generality, with essentially identical patterns of MD activity for visual and auditory materials. In contrast, modality preferences were shown by contrasting easy WM with baseline; most MD regions showed visual preference while immediately adjacent to cortical MD regions, there were interleaved regions of both visual and auditory preference. The results may exemplify a general motif whereby domain-specific regions feed information into and out of an adjacent, integrative MD core.
PUBLICATION:
BioRxiv
- DOI:
10.1101/2021.02.21.431622
- Moataz Assem
- Sneha Shashidhara
- Matthew F. Glasser
- John Duncan
- Ashoka University
- Oxford University
- University of Cambridge
- Washington University in St. Louis