Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections
Introduction: The connectivity of the temporoparietal (TP) region has been the subject of multiple anatomical and functional studies. Its role in high cognitive functions has been primarily correlated with long association fiber connections. As a major sensory integration hub, coactivation of areas...
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Elsevier
2024-01-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772529424000158 |
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| author | Evangelos Drosos Spyridon Komaitis Evangelia Liouta Eleftherios Neromyliotis Eirini Charalampopoulou Lykourgos Anastasopoulos Theodosis Kalamatianos Georgios P. Skandalakis Theodoros Troupis George Stranjalis Aristotelis V. Kalyvas Christos Koutsarnakis |
| author_facet | Evangelos Drosos Spyridon Komaitis Evangelia Liouta Eleftherios Neromyliotis Eirini Charalampopoulou Lykourgos Anastasopoulos Theodosis Kalamatianos Georgios P. Skandalakis Theodoros Troupis George Stranjalis Aristotelis V. Kalyvas Christos Koutsarnakis |
| author_sort | Evangelos Drosos |
| collection | DOAJ |
| description | Introduction: The connectivity of the temporoparietal (TP) region has been the subject of multiple anatomical and functional studies. Its role in high cognitive functions has been primarily correlated with long association fiber connections. As a major sensory integration hub, coactivation of areas within the TP requires a stream of short association fibers running between its subregions. The latter have been the subject of a small number of recent in vivo and cadaveric studies. This has resulted in limited understanding of this network and, in certain occasions, terminology ambiguity. Research question: To systematically study the vertical parietal and temporoparietal short association fibers. Material and methods: Thirteen normal, adult cadaveric hemispheres, were treated with the Klinger's freeze-thaw process and their subcortical anatomy was studied using the microdissection technique. Results: Two separate fiber layers were identified. Superficially, directly beneath the cortical u-fibers, the Stratum proprium intraparietalis (SP) was seen connecting Superior Parietal lobule and Precuneal cortical areas to inferior cortical regions of the Parietal lobe, running deep to the Intraparietal sulcus. At the same dissection level, the IPL-TP fibers were identified as a bundle connecting the Inferior Parietal lobule with posterior Temporal cortical areas. At a deeper level, parallel to the Arcuate fasciculus fibers, the SPL-TP fibers were seen connecting the Superior Parietal lobule to posterior Temporal cortical areas. Discussion and conclusion: To our knowledge this is the first cadaveric dissection study to comprehensively study and describe of the vertical association fibers of the temporoparietal region while proposing a universal terminology. |
| format | Article |
| id | doaj-art-58981f5f4e9b487080eb9831a727da18 |
| institution | OA Journals |
| issn | 2772-5294 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Brain and Spine |
| spelling | doaj-art-58981f5f4e9b487080eb9831a727da182025-08-20T01:56:24ZengElsevierBrain and Spine2772-52942024-01-01410275910.1016/j.bas.2024.102759Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissectionsEvangelos Drosos0Spyridon Komaitis1Evangelia Liouta2Eleftherios Neromyliotis3Eirini Charalampopoulou4Lykourgos Anastasopoulos5Theodosis Kalamatianos6Georgios P. Skandalakis7Theodoros Troupis8George Stranjalis9Aristotelis V. Kalyvas10Christos Koutsarnakis11Manchester Centre for Clinical Neurosciences, Northern Care Alliance NHS FT, Manchester, UK; Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Department of Anatomy, National and Kapodistrian University of Athens, Athens, Greece; Corresponding author. Manchester Centre for Clinical Neurosciences, Stott ln, Salford, M68HD, UK.Athens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Centre for Spinal Studies and Surgery, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, United KingdomHellenic Center for Neurosurgical Research “Prof. Petros Kokkalis”, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Department of Neurosurgery, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Department of Neurosurgery, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Department of Neurosurgery, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Hellenic Center for Neurosurgical Research “Prof. Petros Kokkalis”, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Department of Neurosurgery, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, GreeceDepartment of Anatomy, National and Kapodistrian University of Athens, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Hellenic Center for Neurosurgical Research “Prof. Petros Kokkalis”, Athens, Greece; Department of Neurosurgery, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, GreeceAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Division of Neurosurgery, Department of Surgery, University Health Network, University of Toronto, Toronto, CanadaAthens Microneurosurgery Laboratory, National and Kapodistrian University of Athens, Athens, Greece; Hellenic Center for Neurosurgical Research “Prof. Petros Kokkalis”, Athens, Greece; Department of Neurosurgery, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, GreeceIntroduction: The connectivity of the temporoparietal (TP) region has been the subject of multiple anatomical and functional studies. Its role in high cognitive functions has been primarily correlated with long association fiber connections. As a major sensory integration hub, coactivation of areas within the TP requires a stream of short association fibers running between its subregions. The latter have been the subject of a small number of recent in vivo and cadaveric studies. This has resulted in limited understanding of this network and, in certain occasions, terminology ambiguity. Research question: To systematically study the vertical parietal and temporoparietal short association fibers. Material and methods: Thirteen normal, adult cadaveric hemispheres, were treated with the Klinger's freeze-thaw process and their subcortical anatomy was studied using the microdissection technique. Results: Two separate fiber layers were identified. Superficially, directly beneath the cortical u-fibers, the Stratum proprium intraparietalis (SP) was seen connecting Superior Parietal lobule and Precuneal cortical areas to inferior cortical regions of the Parietal lobe, running deep to the Intraparietal sulcus. At the same dissection level, the IPL-TP fibers were identified as a bundle connecting the Inferior Parietal lobule with posterior Temporal cortical areas. At a deeper level, parallel to the Arcuate fasciculus fibers, the SPL-TP fibers were seen connecting the Superior Parietal lobule to posterior Temporal cortical areas. Discussion and conclusion: To our knowledge this is the first cadaveric dissection study to comprehensively study and describe of the vertical association fibers of the temporoparietal region while proposing a universal terminology.http://www.sciencedirect.com/science/article/pii/S2772529424000158White matter anatomyConnectivityParietal lobeTemporal lobeTemporoparietal regionSensory integration |
| spellingShingle | Evangelos Drosos Spyridon Komaitis Evangelia Liouta Eleftherios Neromyliotis Eirini Charalampopoulou Lykourgos Anastasopoulos Theodosis Kalamatianos Georgios P. Skandalakis Theodoros Troupis George Stranjalis Aristotelis V. Kalyvas Christos Koutsarnakis Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections Brain and Spine White matter anatomy Connectivity Parietal lobe Temporal lobe Temporoparietal region Sensory integration |
| title | Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections |
| title_full | Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections |
| title_fullStr | Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections |
| title_full_unstemmed | Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections |
| title_short | Parcellating the vertical associative fiber network of the temporoparietal area: Evidence from focused anatomic fiber dissections |
| title_sort | parcellating the vertical associative fiber network of the temporoparietal area evidence from focused anatomic fiber dissections |
| topic | White matter anatomy Connectivity Parietal lobe Temporal lobe Temporoparietal region Sensory integration |
| url | http://www.sciencedirect.com/science/article/pii/S2772529424000158 |
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