The dual-loop model for combining external and internal worlds in our brain
Intelligible communication with others as well as covert conscious thought requires us to combine a representation of the external world with inner abstract concepts.Interaction with the external world through sensory perception and motor execution is arranged as sequences in time and space, whereas...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | NeuroImage |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S105381192200698X |
| _version_ | 1811247901144252416 |
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| author | Cornelius Weiller Marco Reisert Volkmar Glauche Mariachristina Musso Michel Rijntjes |
| author_facet | Cornelius Weiller Marco Reisert Volkmar Glauche Mariachristina Musso Michel Rijntjes |
| author_sort | Cornelius Weiller |
| collection | DOAJ |
| description | Intelligible communication with others as well as covert conscious thought requires us to combine a representation of the external world with inner abstract concepts.Interaction with the external world through sensory perception and motor execution is arranged as sequences in time and space, whereas abstract thought and invariant categories are independent of the moment. Using advanced MRI-based fibre tracking on high resolution data from 183 participants in the Human Connectome Project, we identified two large supramodal systems comprising specific cortical regions and their connecting fibre tracts; a dorsal one for processing of sequences in time and space, and a ventral one for concepts and categories. We found that two hub regions exist in the executive front and the perceptive back of the brain where these two cognitive processes converge, constituting a dual-loop model. The hubs are located in the onto- and phylogenetically youngest regions of the cortex. We propose that this hub feature serves as the neural substrate for the more abstract sense of syntax in humans, i.e. for the system populating sequences with content in all cognitive domains. The hubs bring together two separate systems (dorsal and ventral) at the front and the back of the brain and create a closed-loop. The closed-loop facilitates recursivity and forethought, which we use twice; namely, for communication with others about things that are not there and for covert thought. |
| first_indexed | 2024-04-12T15:17:41Z |
| format | Article |
| id | doaj.art-926400a4ca1547608a68027413a819a7 |
| institution | Directory Open Access Journal |
| issn | 1095-9572 |
| language | English |
| last_indexed | 2024-04-12T15:17:41Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage |
| spelling | doaj.art-926400a4ca1547608a68027413a819a72022-12-22T03:27:34ZengElsevierNeuroImage1095-95722022-11-01263119583The dual-loop model for combining external and internal worlds in our brainCornelius Weiller0Marco Reisert1Volkmar Glauche2Mariachristina Musso3Michel Rijntjes4Department of Neurology and Clinical Neuroscience, Medical Center, Faculty of Medicine, University of Freiburg; Breisacher Street 64, Freiburg D- 79104, Germany; Corresponding author.Department of Medical Physics, Medical Center, Faculty of Medicine, University of Freiburg; Breisacher Street 64, Freiburg D- 79104, Germany; Department of Stereotactic and Functional Neurosurgery, Medical Center, Faculty of Medicine, University of Freiburg; Breisacher Street 64, Freiburg D- 79104, GermanyDepartment of Neurology and Clinical Neuroscience, Medical Center, Faculty of Medicine, University of Freiburg; Breisacher Street 64, Freiburg D- 79104, GermanyDepartment of Neurology and Clinical Neuroscience, Medical Center, Faculty of Medicine, University of Freiburg; Breisacher Street 64, Freiburg D- 79104, GermanyDepartment of Neurology and Clinical Neuroscience, Medical Center, Faculty of Medicine, University of Freiburg; Breisacher Street 64, Freiburg D- 79104, GermanyIntelligible communication with others as well as covert conscious thought requires us to combine a representation of the external world with inner abstract concepts.Interaction with the external world through sensory perception and motor execution is arranged as sequences in time and space, whereas abstract thought and invariant categories are independent of the moment. Using advanced MRI-based fibre tracking on high resolution data from 183 participants in the Human Connectome Project, we identified two large supramodal systems comprising specific cortical regions and their connecting fibre tracts; a dorsal one for processing of sequences in time and space, and a ventral one for concepts and categories. We found that two hub regions exist in the executive front and the perceptive back of the brain where these two cognitive processes converge, constituting a dual-loop model. The hubs are located in the onto- and phylogenetically youngest regions of the cortex. We propose that this hub feature serves as the neural substrate for the more abstract sense of syntax in humans, i.e. for the system populating sequences with content in all cognitive domains. The hubs bring together two separate systems (dorsal and ventral) at the front and the back of the brain and create a closed-loop. The closed-loop facilitates recursivity and forethought, which we use twice; namely, for communication with others about things that are not there and for covert thought.http://www.sciencedirect.com/science/article/pii/S105381192200698XConnectivityCortical parcellationDorsalVentralSyntax |
| spellingShingle | Cornelius Weiller Marco Reisert Volkmar Glauche Mariachristina Musso Michel Rijntjes The dual-loop model for combining external and internal worlds in our brain NeuroImage Connectivity Cortical parcellation Dorsal Ventral Syntax |
| title | The dual-loop model for combining external and internal worlds in our brain |
| title_full | The dual-loop model for combining external and internal worlds in our brain |
| title_fullStr | The dual-loop model for combining external and internal worlds in our brain |
| title_full_unstemmed | The dual-loop model for combining external and internal worlds in our brain |
| title_short | The dual-loop model for combining external and internal worlds in our brain |
| title_sort | dual loop model for combining external and internal worlds in our brain |
| topic | Connectivity Cortical parcellation Dorsal Ventral Syntax |
| url | http://www.sciencedirect.com/science/article/pii/S105381192200698X |
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