Activity changes of the cat paraventricular hypothalamus during stressor exposure
Dorso-medial paraventricular hypothalamus (PVH) activity was assessed by light scattering procedures in freely behaving cats during auditory stressor exposure. Acoustic noise (> 95 dB) raised plasma ACTH concentrations, somatic muscle tonus, respiratory frequency and cardiac rates; PVH activity p...
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Veröffentlicht in: | Neuroreport 2004-01, Vol.15 (1), p.43-48 |
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description | Dorso-medial paraventricular hypothalamus (PVH) activity was assessed by light scattering procedures in freely behaving cats during auditory stressor exposure. Acoustic noise (> 95 dB) raised plasma ACTH concentrations, somatic muscle tonus, respiratory frequency and cardiac rates; PVH activity peaked 0.8 s following stimulation, and then markedly declined below baseline to a trough at 9.7 s. Hypothalamic responses were not uniformly distributed across the recorded PVH field. Activity changes emerged from subregions within the visualized area, and were widespread at the overall activity zenith and nadir. Isolated pixels appeared opposite in activity pattern to overall changes. We suggest that transient activity increases represent initial PVH neural stress responses, and that subsequent profound declines result from neural inhibitory feedback. |
doi_str_mv | 10.1097/00001756-200401190-00010 |
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Acoustic noise (> 95 dB) raised plasma ACTH concentrations, somatic muscle tonus, respiratory frequency and cardiac rates; PVH activity peaked 0.8 s following stimulation, and then markedly declined below baseline to a trough at 9.7 s. Hypothalamic responses were not uniformly distributed across the recorded PVH field. Activity changes emerged from subregions within the visualized area, and were widespread at the overall activity zenith and nadir. Isolated pixels appeared opposite in activity pattern to overall changes. We suggest that transient activity increases represent initial PVH neural stress responses, and that subsequent profound declines result from neural inhibitory feedback.</description><identifier>ISSN: 0959-4965</identifier><identifier>EISSN: 1473-558X</identifier><identifier>DOI: 10.1097/00001756-200401190-00010</identifier><identifier>PMID: 15106829</identifier><language>eng</language><publisher>Hagerstown, MD: Lippincott Williams & Wilkins, Inc</publisher><subject>Acoustic Stimulation - adverse effects ; Adrenocorticotropic Hormone - blood ; Animals ; Biological and medical sciences ; Cats ; Electroencephalography - methods ; Electromyography - methods ; Female ; Fundamental and applied biological sciences. Psychology ; Heart Rate - physiology ; Male ; Paraventricular Hypothalamic Nucleus - physiology ; Stress, Physiological - blood ; Stress, Physiological - physiopathology ; Vertebrates: nervous system and sense organs</subject><ispartof>Neuroreport, 2004-01, Vol.15 (1), p.43-48</ispartof><rights>2004 Lippincott Williams & Wilkins, Inc.</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4170-fc994809c164a139f7d843cd75d08e98f877b2ac4603f6bff7469f515fc5c62e3</citedby><cites>FETCH-LOGICAL-c4170-fc994809c164a139f7d843cd75d08e98f877b2ac4603f6bff7469f515fc5c62e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15582769$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15106829$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kristensen, Morten P</creatorcontrib><creatorcontrib>Rector, David M</creatorcontrib><creatorcontrib>Poe, Gina R</creatorcontrib><creatorcontrib>Harper, Ronald M</creatorcontrib><title>Activity changes of the cat paraventricular hypothalamus during stressor exposure</title><title>Neuroreport</title><addtitle>Neuroreport</addtitle><description>Dorso-medial paraventricular hypothalamus (PVH) activity was assessed by light scattering procedures in freely behaving cats during auditory stressor exposure. Acoustic noise (> 95 dB) raised plasma ACTH concentrations, somatic muscle tonus, respiratory frequency and cardiac rates; PVH activity peaked 0.8 s following stimulation, and then markedly declined below baseline to a trough at 9.7 s. Hypothalamic responses were not uniformly distributed across the recorded PVH field. Activity changes emerged from subregions within the visualized area, and were widespread at the overall activity zenith and nadir. Isolated pixels appeared opposite in activity pattern to overall changes. We suggest that transient activity increases represent initial PVH neural stress responses, and that subsequent profound declines result from neural inhibitory feedback.</description><subject>Acoustic Stimulation - adverse effects</subject><subject>Adrenocorticotropic Hormone - blood</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Cats</subject><subject>Electroencephalography - methods</subject><subject>Electromyography - methods</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Heart Rate - physiology</subject><subject>Male</subject><subject>Paraventricular Hypothalamic Nucleus - physiology</subject><subject>Stress, Physiological - blood</subject><subject>Stress, Physiological - physiopathology</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>0959-4965</issn><issn>1473-558X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0U1rFDEYwPEgit1Wv4LkUm_TPpnJ67GUqoVCKSh4C9lM0hnNzkzzZFr32zvrrtqLmEsg_J4E_iGEMjhjYNQ5LIspIasagANjBqrdCbwgK8ZVUwmhv74kKzDCVNxIcUSOEb8txADTr8kREwykrs2K3F340j_2ZUt954b7gHSMtHSBelfo5LJ7DEPJvZ-Ty7TbTmPpXHKbGWk75364p1hyQBwzDT-mEecc3pBX0SUMbw_7Cfny4erz5afq5vbj9eXFTeU5U1BFbwzXYDyT3LHGRNVq3vhWiRZ0MDpqpda181xCE-U6RsWliYKJ6IWXdWhOyPv9vVMeH-aAxW569CElN4RxRquYlo0y8r-wBgE1KL1AvYc-j4g5RDvlfuPy1jKwu-72d3f7p7v91X0ZfXd4Y15vQvt38BB6AacH4NC7FLMbfI_PnNC1kjvH9-5pTCVk_J7mp5BtF1wqnf3Xvzc_ATz5muo</recordid><startdate>20040119</startdate><enddate>20040119</enddate><creator>Kristensen, Morten P</creator><creator>Rector, David M</creator><creator>Poe, Gina R</creator><creator>Harper, Ronald M</creator><general>Lippincott Williams & Wilkins, Inc</general><general>Lippincott Williams and Wilkins</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TK</scope><scope>7U7</scope><scope>C1K</scope><scope>7X8</scope></search><sort><creationdate>20040119</creationdate><title>Activity changes of the cat paraventricular hypothalamus during stressor exposure</title><author>Kristensen, Morten P ; Rector, David M ; Poe, Gina R ; Harper, Ronald M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4170-fc994809c164a139f7d843cd75d08e98f877b2ac4603f6bff7469f515fc5c62e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Acoustic Stimulation - adverse effects</topic><topic>Adrenocorticotropic Hormone - blood</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Cats</topic><topic>Electroencephalography - methods</topic><topic>Electromyography - methods</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Heart Rate - physiology</topic><topic>Male</topic><topic>Paraventricular Hypothalamic Nucleus - physiology</topic><topic>Stress, Physiological - blood</topic><topic>Stress, Physiological - physiopathology</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kristensen, Morten P</creatorcontrib><creatorcontrib>Rector, David M</creatorcontrib><creatorcontrib>Poe, Gina R</creatorcontrib><creatorcontrib>Harper, Ronald M</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>MEDLINE - Academic</collection><jtitle>Neuroreport</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kristensen, Morten P</au><au>Rector, David M</au><au>Poe, Gina R</au><au>Harper, Ronald M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Activity changes of the cat paraventricular hypothalamus during stressor exposure</atitle><jtitle>Neuroreport</jtitle><addtitle>Neuroreport</addtitle><date>2004-01-19</date><risdate>2004</risdate><volume>15</volume><issue>1</issue><spage>43</spage><epage>48</epage><pages>43-48</pages><issn>0959-4965</issn><eissn>1473-558X</eissn><abstract>Dorso-medial paraventricular hypothalamus (PVH) activity was assessed by light scattering procedures in freely behaving cats during auditory stressor exposure. 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subjects | Acoustic Stimulation - adverse effects Adrenocorticotropic Hormone - blood Animals Biological and medical sciences Cats Electroencephalography - methods Electromyography - methods Female Fundamental and applied biological sciences. Psychology Heart Rate - physiology Male Paraventricular Hypothalamic Nucleus - physiology Stress, Physiological - blood Stress, Physiological - physiopathology Vertebrates: nervous system and sense organs |
title | Activity changes of the cat paraventricular hypothalamus during stressor exposure |
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