Journal
NEUROBIOLOGY OF LEARNING AND MEMORY
Volume 185, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nlm.2021.107516
Keywords
Landmark; Memory; Navigation; Space; Thalamus
Funding
- Wellcome Trust [103722/Z14/Z]
- UK BBSRC [BB/L021005/1, BB/T007249/1]
- BBSRC [BB/L021005/1, BB/T007249/1] Funding Source: UKRI
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The retrosplenial cortex contains two principal subdivisions, with area 29 receiving hippocampal and parahippocampal spatial information, while area 30 interacts primarily with current visual information. These areas work together to integrate spatial information from different perspectives, providing cues for navigation and spatial learning.
Retrosplenial cortex contains two principal subdivisions, area 29 (granular) and area 30 (dysgranular). Their respective anatomical connections in the rat brain reveal that area 29 is the primary recipient of hippocampal and parahippocampal spatial and contextual information while area 30 is the primary interactor with current visual information. Lesion studies and measures of neuronal activity in rodents indicate that retrosplenial cortex helps to integrate space from different perspectives, e.g., egocentric and allocentric, providing landmark and heading cues for navigation and spatial learning. It provides a repository of scene information that, over time, becomes increasingly independent of the hippocampus. These processes, reflect the interactive actions between areas 29 and 30, along with their convergent influences on cortical and thalamic targets. Consequently, despite their differences, both areas 29 and 30 are necessary for an array of spatial and learning problems.
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