Ascending pathways mediating cardiovascular signals to the ventral posterior lateral nucleus of thalamus in the cat.
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- NODA Kazuko
- Laboratory of Physiology, School of Allied Health Sciences, Kitasato University
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- AKITA Hisanao
- Laboratory of Physiology, School of Allied Health Sciences, Kitasato University
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- OGATA Masanori
- Laboratory of Physiology, School of Allied Health Sciences, Kitasato University
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- AIKAWA Sadao
- Laboratory of Physiology, School of Allied Health Sciences, Kitasato University
Bibliographic Information
- Other Title
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- ネコ視床後外側腹側核ニューロンへの心血管系信号の上行性伝導路
- Ascending pathways mediating cardiovasc
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Abstract
Neuronal activities in the ventral posterior lateral nucleus (VPL) of the cat thalamus were recorded extracellularly using the multimicroelectrode system. In spontaneous activities, some neurons received information from structures related to cardiovascular movement and also from peripheral somatic receptive fields (Rfs). These unitary activities were synchronized with heart beat, therefore they are called as heart beat (HB) discharges. This phenomenon may be concerned with referred pain. Thus, some VPL neurons appear to relay cardiovascular information to the cerebral cortex. The characteristics of 39 HB units were determined by mechanical stimulation such as bending hair, tapping, pinching and joint movement. To investigate the ascending pathways, transection of vagi and partial spinal cord lesions at the cervical level were performed. HB activities were unaffected by bilateral vagotomy. Some of the HB activities disappeared following partial cordotomy of the lateral portion of the ventrolateral funiculus ipsilateral to the receptive field. However, evoked responses to electrical stimulation applied to the HB Rfs persisted. After the remaining cord was severed, the evoked responses vanished. These results show that afferent signals of HB activities and evoked responses to electrical stimulation appear to ascend through different pathways and converge at the thalamic level.
Journal
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- Zen Nihon Shinkyu Gakkai zasshi (Journal of the Japan Society of Acupuncture and Moxibustion)
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Zen Nihon Shinkyu Gakkai zasshi (Journal of the Japan Society of Acupuncture and Moxibustion) 47 (4), 231-241, 1997
The Japan Society of Acupuncture and Moxibustion
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Keywords
Details 詳細情報について
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- CRID
- 1390282679521469056
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- NII Article ID
- 130004176057
- 40004423553
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- NII Book ID
- AN00315097
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- ISSN
- 1882661X
- 02859955
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- NDL BIB ID
- 4404380
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed