Blar i NTNU Open på forfatter "Ohara, Shinya"
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Architecture of the entorhinal cortex A review of entorhinal anatomy in rodents with some comparative notes
Witter, Menno; Doan, Thanh Pierre; Nilssen, Eirik Stamland; Jacobsen, Bente; Ohara, Shinya (Journal article; Peer reviewed, 2017)The entorhinal cortex (EC) is the major input and output structure of the hippocampal formation, forming the nodal point in cortico-hippocampal circuits. Different division schemes including two or many more subdivisions ... -
Convergent projections from perirhinal and postrhinal cortices suggest a multisensory nature of lateral but not medial entorhinal cortex
Doan, Thanh Pierre; Donate Lagartos, Maria Jose; Nilssen, Eirik Stamland; Ohara, Shinya; Witter, Menno (Journal article; Peer reviewed, 2019)The current model of the organization of the medial temporal lobe (MTL) episodic memory system assumes that two functionally different “where” and “what” pathways enter MTL as parallel parahippocampal cortex (PHC)-medial ... -
Entorhinal layer II calbindin-expressing neurons originate widespread telencephalic and intrinsic projections
Ohara, Shinya; Gianatti, Michele; Itou, Kazuki; Berndtsson, Christin Høiberget; Doan, Thanh Pierre; Kitanishi, Takuma; Mizuseki, Kenju; Ijima, Toshio; Tsutsui, Ken-Ishiro; Witter, Menno (Journal article; Peer reviewed, 2019)In the present study we provide the first systematic and quantitative hodological study of the calbindin-expressing (CB+) principal neurons in layer II of the entorhinal cortex and compared the respective projections of ... -
Hippocampal-medial entorhinal circuit is differently organized along the dorsoventral axis in rodents
Ohara, Shinya; Rannap, Märt; Tsutsui, Ken-Ichiro; Draguhn, Andreas; Egorov, Alexei V.; Witter, Menno Peter (Peer reviewed; Journal article, 2023)The general understanding of hippocampal circuits is that the hippocampus and the entorhinal cortex (EC) are topographically connected through parallel identical circuits along the dorsoventral axis. Our anterograde tracing ... -
Intrinsic Projections of Layer Vb Neurons to Layers Va, III, and II in the Lateral and Medial Entorhinal Cortex of the Rat
Witter, Menno; Ohara, Shinya; Onodera, Mariko; Simonsen, Øyvind Wilsgård; Yoshino, Rintaro; Hioki, Hiroyuki; Iijima, Toshio; Tsutsui, Ken-Ichiro (Journal article; Peer reviewed, 2018)Layer V of the entorhinal cortex (EC) receives input from the hippocampus and originates main entorhinal outputs. The deep-sublayer Vb, immunopositive for the transcription factor Ctip2, is thought to be the main recipient ... -
Local projections of layer Vb-to-Va are more prominent in lateral than in medial entorhinal cortex
Ohara, Shinya; Blankvoort, Stefan; Nair Raveendran, Rajeevkumar; Nigro, Maximiliano Jose; Nilssen, Eirik Stamland; Kentros, Clifford; Witter, Menno (Peer reviewed; Journal article, 2021)The entorhinal cortex, in particular neurons in layer V, allegedly mediate transfer of information from the hippocampus to the neocortex, underlying long-term memory. Recently, this circuit has been shown to comprise a ... -
Neurons and networks in the entorhinal cortex: A reappraisal of the lateral and medial entorhinal subdivisions mediating parallel cortical pathways
Nilssen, Eirik Stamland; Doan, Thanh Pierre; Nigro, Maximiliano Jose; Ohara, Shinya; Witter, Menno (Journal article; Peer reviewed, 2019)In this review, we aim to reappraise the organization of intrinsic and extrinsic networks of the entorhinal cortex with a focus on the concept of parallel cortical connectivity streams. The concept of two entorhinal areas, ... -
Parahippocampal and retrosplenial connections of rat posterior parietal cortex
Olsen, Grethe Mari; Ohara, Shinya; Iijima, Toshio; Witter, Menno (Journal article; Peer reviewed, 2017)The posterior parietal cortex has been implicated in spatial functions, including navigation. The hippocampal and parahippocampal region and the retrosplenial cortex are crucially involved in navigational processes and ...