Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI
This study compares a whole brain of the dwarf sperm whale (Kogia sima) with that of a common dolphin (Delphinus delphis) using high-resolution magnetic resonance imaging (MRI). The Kogia brain was scanned with a Siemens Trio Magnetic Resonance scanner in the three main planes. As in the common dolp...
Published in: | Brain, Behavior and Evolution |
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2010
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Online Access: | https://resolver.sub.uni-goettingen.de/purl?gro-2/20898 https://resolver.sub.uni-goettingen.de/purl?gs-1/9099 https://doi.org/10.1159/000293601 |
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ftsubgoettingen:oai:publications.goettingen-research-online.de:2/20898 2023-09-05T13:23:32+02:00 Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI Oelschlaeger, H. H. A. Ridgway, S. H. Knauth, Michael 2010 https://resolver.sub.uni-goettingen.de/purl?gro-2/20898 https://resolver.sub.uni-goettingen.de/purl?gs-1/9099 https://doi.org/10.1159/000293601 unknown Karger 1421-9743 0006-8977 https://resolver.sub.uni-goettingen.de/purl?gro-2/20898 doi:10.1159/000293601 20203478 000276372600007 https://resolver.sub.uni-goettingen.de/purl?gs-1/9099 Goescholar https://goescholar.uni-goettingen.de/licenses journal_article published yes published_version 2010 ftsubgoettingen https://doi.org/10.1159/000293601 2023-08-20T22:12:44Z This study compares a whole brain of the dwarf sperm whale (Kogia sima) with that of a common dolphin (Delphinus delphis) using high-resolution magnetic resonance imaging (MRI). The Kogia brain was scanned with a Siemens Trio Magnetic Resonance scanner in the three main planes. As in the common dolphin and other marine odontocetes, the brain of the dwarf sperm whale is large, with the telencephalic hemispheres remarkably dominating the brain stem. The neocortex is voluminous and the cortical grey matter thin but expansive and densely convoluted. The corpus callosum is thin and the anterior commissure hard to detect whereas the posterior commissure is well-developed. There is consistency as to the lack of telencephalic structures (olfactory bulb and peduncle, olfactory ventricular recess) and neither an occipital lobe of the telencephalic hemisphere nor the posterior horn of the lateral ventricle are present. A pineal organ could not be detected in Kogia. Both species show a tiny hippocampus and thin fornix and the mammillary body is very small whereas other structures of the limbic system are well-developed. The brain stem is thick and underlies a large cerebellum, both of which, however, are smaller in Kogia. The vestibular system is markedly reduced with the exception of the lateral (Deiters') nucleus. The visual system, although well-developed in both species, is exceeded by the impressive absolute and relative size of the auditory system. The brainstem and cerebellum comprise a series of structures (elliptic nucleus, medial accessory inferior olive, paraflocculus and posterior interpositus nucleus) showing characteristic odontocete dimensions and size correlations. All these structures seem to serve the auditory system with respect to echolocation, communication, and navigation. Copyright (C) 2010 S. Karger AG, Basel Article in Journal/Newspaper Sperm whale Georg-August-Universität Göttingen: GoeScholar Recess ENVELOPE(-61.516,-61.516,-64.500,-64.500) Brain, Behavior and Evolution 75 1 33 62 |
institution |
Open Polar |
collection |
Georg-August-Universität Göttingen: GoeScholar |
op_collection_id |
ftsubgoettingen |
language |
unknown |
description |
This study compares a whole brain of the dwarf sperm whale (Kogia sima) with that of a common dolphin (Delphinus delphis) using high-resolution magnetic resonance imaging (MRI). The Kogia brain was scanned with a Siemens Trio Magnetic Resonance scanner in the three main planes. As in the common dolphin and other marine odontocetes, the brain of the dwarf sperm whale is large, with the telencephalic hemispheres remarkably dominating the brain stem. The neocortex is voluminous and the cortical grey matter thin but expansive and densely convoluted. The corpus callosum is thin and the anterior commissure hard to detect whereas the posterior commissure is well-developed. There is consistency as to the lack of telencephalic structures (olfactory bulb and peduncle, olfactory ventricular recess) and neither an occipital lobe of the telencephalic hemisphere nor the posterior horn of the lateral ventricle are present. A pineal organ could not be detected in Kogia. Both species show a tiny hippocampus and thin fornix and the mammillary body is very small whereas other structures of the limbic system are well-developed. The brain stem is thick and underlies a large cerebellum, both of which, however, are smaller in Kogia. The vestibular system is markedly reduced with the exception of the lateral (Deiters') nucleus. The visual system, although well-developed in both species, is exceeded by the impressive absolute and relative size of the auditory system. The brainstem and cerebellum comprise a series of structures (elliptic nucleus, medial accessory inferior olive, paraflocculus and posterior interpositus nucleus) showing characteristic odontocete dimensions and size correlations. All these structures seem to serve the auditory system with respect to echolocation, communication, and navigation. Copyright (C) 2010 S. Karger AG, Basel |
format |
Article in Journal/Newspaper |
author |
Oelschlaeger, H. H. A. Ridgway, S. H. Knauth, Michael |
spellingShingle |
Oelschlaeger, H. H. A. Ridgway, S. H. Knauth, Michael Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI |
author_facet |
Oelschlaeger, H. H. A. Ridgway, S. H. Knauth, Michael |
author_sort |
Oelschlaeger, H. H. A. |
title |
Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI |
title_short |
Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI |
title_full |
Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI |
title_fullStr |
Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI |
title_full_unstemmed |
Cetacean Brain Evolution: Dwarf Sperm Whale (Kogia sima) and Common Dolphin (Delphinus delphis) - An Investigation with High-Resolution 3D MRI |
title_sort |
cetacean brain evolution: dwarf sperm whale (kogia sima) and common dolphin (delphinus delphis) - an investigation with high-resolution 3d mri |
publisher |
Karger |
publishDate |
2010 |
url |
https://resolver.sub.uni-goettingen.de/purl?gro-2/20898 https://resolver.sub.uni-goettingen.de/purl?gs-1/9099 https://doi.org/10.1159/000293601 |
long_lat |
ENVELOPE(-61.516,-61.516,-64.500,-64.500) |
geographic |
Recess |
geographic_facet |
Recess |
genre |
Sperm whale |
genre_facet |
Sperm whale |
op_relation |
1421-9743 0006-8977 https://resolver.sub.uni-goettingen.de/purl?gro-2/20898 doi:10.1159/000293601 20203478 000276372600007 https://resolver.sub.uni-goettingen.de/purl?gs-1/9099 |
op_rights |
Goescholar https://goescholar.uni-goettingen.de/licenses |
op_doi |
https://doi.org/10.1159/000293601 |
container_title |
Brain, Behavior and Evolution |
container_volume |
75 |
container_issue |
1 |
container_start_page |
33 |
op_container_end_page |
62 |
_version_ |
1776204141571342336 |