Electrophysiological evidence for a projection from medial prefrontal and anterior limbic cortex toward the medial preoptic area in the cat
Neurons in cat medial prefrontal cortex, anterior limbic cortex and possibly the indusium griseum were identified by antidromic invasion as having axonal projections towards the medial preoptic region, using both macro- and microstimulation techniques. These projecting axons were found to be of slow...
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| Veröffentlicht in: | Experimental brain research 1986-01, Vol.63 (1), p.205-215 |
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| creator | HYLAND, B. I SIRETT, N. E HUBBARD, J. I |
| description | Neurons in cat medial prefrontal cortex, anterior limbic cortex and possibly the indusium griseum were identified by antidromic invasion as having axonal projections towards the medial preoptic region, using both macro- and microstimulation techniques. These projecting axons were found to be of slow conduction velocity (0.2-4.8 m/s) and to in some cases also send branches towards the anteromedial thalamus, mediodorsal thalamus, ventromedial tegmentum, basolateral amygdala or medial forebrain bundle. Threshold-depth curves for axons excited by microstimulation in the medial preoptic region were very steep, with proportionality constants of 0.3-7.1 micron/microA. Calculations based on the threshold-depth curves confirmed that microstimulation was most probably only activating axons within the MPO, and current spread to lateral fibers of passage following macrostimulation in the MPO was not detected in the branching studies. |
| doi_str_mv | 10.1007/BF00235665 |
| format | Article |
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I</creatorcontrib><creatorcontrib>SIRETT, N. E</creatorcontrib><creatorcontrib>HUBBARD, J. I</creatorcontrib><title>Electrophysiological evidence for a projection from medial prefrontal and anterior limbic cortex toward the medial preoptic area in the cat</title><title>Experimental brain research</title><addtitle>Exp Brain Res</addtitle><description>Neurons in cat medial prefrontal cortex, anterior limbic cortex and possibly the indusium griseum were identified by antidromic invasion as having axonal projections towards the medial preoptic region, using both macro- and microstimulation techniques. These projecting axons were found to be of slow conduction velocity (0.2-4.8 m/s) and to in some cases also send branches towards the anteromedial thalamus, mediodorsal thalamus, ventromedial tegmentum, basolateral amygdala or medial forebrain bundle. Threshold-depth curves for axons excited by microstimulation in the medial preoptic region were very steep, with proportionality constants of 0.3-7.1 micron/microA. Calculations based on the threshold-depth curves confirmed that microstimulation was most probably only activating axons within the MPO, and current spread to lateral fibers of passage following macrostimulation in the MPO was not detected in the branching studies.</description><subject>Animals</subject><subject>Axons - physiology</subject><subject>Biological and medical sciences</subject><subject>Cats</subject><subject>Central nervous system</subject><subject>Electrophysiology</subject><subject>Evoked Potentials</subject><subject>Female</subject><subject>Frontal Lobe - anatomy & histology</subject><subject>Frontal Lobe - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Limbic System - anatomy & histology</subject><subject>Limbic System - physiology</subject><subject>Male</subject><subject>Neural Pathways - anatomy & histology</subject><subject>Neural Pathways - physiology</subject><subject>Preoptic Area - anatomy & histology</subject><subject>Preoptic Area - physiology</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>0014-4819</issn><issn>1432-1106</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1986</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpNkM1KLDEQhYMoOlfduBeyEBdCa_466V6q6L2C4EbXTU1So5HuTptkvPoMvrRRB3VRVBXnq4JzCNnj7JgzZk7OLhkTsta6XiMzrqSoOGd6ncwY46pSDW-3yJ-UHj9Wadgm2ZRGCqXqGXm76NHmGKaH1-RDH-69hZ7is3c4WqSLECnQKYbHQvkw0kUMAx3Q-UJNEcs65jLC6EpljL4c9H6Ye0ttiBlfaA7_ITqaH_DXXZhyISAiUD9-ahbyDtlYQJ9wd9W3yd3lxe35v-r65u_V-el1ZSXnubIWtOVowdU1oGRz7VRTawuNBmGEaJ3kqnbNHEyjBBjtDIJpuZOWGRRSbpPDr7_F19MSU-4Gnyz2PYwYlqkzulWtUKKAR1-gjSGl4raboh8gvnacdR_Jdz_JF3h_9XU5L0a_0VXURT9Y6ZBKxosIo_XpGzONUaJu5Tt-1I03</recordid><startdate>19860101</startdate><enddate>19860101</enddate><creator>HYLAND, B. 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I</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c311t-cca6c1ecad55ae30b6d4856ca86a27229d3145d8ba7842a76d7ea791d3c07e233</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1986</creationdate><topic>Animals</topic><topic>Axons - physiology</topic><topic>Biological and medical sciences</topic><topic>Cats</topic><topic>Central nervous system</topic><topic>Electrophysiology</topic><topic>Evoked Potentials</topic><topic>Female</topic><topic>Frontal Lobe - anatomy & histology</topic><topic>Frontal Lobe - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Limbic System - anatomy & histology</topic><topic>Limbic System - physiology</topic><topic>Male</topic><topic>Neural Pathways - anatomy & histology</topic><topic>Neural Pathways - physiology</topic><topic>Preoptic Area - anatomy & histology</topic><topic>Preoptic Area - physiology</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HYLAND, B. I</creatorcontrib><creatorcontrib>SIRETT, N. E</creatorcontrib><creatorcontrib>HUBBARD, J. I</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>MEDLINE - Academic</collection><jtitle>Experimental brain research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HYLAND, B. I</au><au>SIRETT, N. E</au><au>HUBBARD, J. I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrophysiological evidence for a projection from medial prefrontal and anterior limbic cortex toward the medial preoptic area in the cat</atitle><jtitle>Experimental brain research</jtitle><addtitle>Exp Brain Res</addtitle><date>1986-01-01</date><risdate>1986</risdate><volume>63</volume><issue>1</issue><spage>205</spage><epage>215</epage><pages>205-215</pages><issn>0014-4819</issn><eissn>1432-1106</eissn><coden>EXBRAP</coden><abstract>Neurons in cat medial prefrontal cortex, anterior limbic cortex and possibly the indusium griseum were identified by antidromic invasion as having axonal projections towards the medial preoptic region, using both macro- and microstimulation techniques. These projecting axons were found to be of slow conduction velocity (0.2-4.8 m/s) and to in some cases also send branches towards the anteromedial thalamus, mediodorsal thalamus, ventromedial tegmentum, basolateral amygdala or medial forebrain bundle. Threshold-depth curves for axons excited by microstimulation in the medial preoptic region were very steep, with proportionality constants of 0.3-7.1 micron/microA. Calculations based on the threshold-depth curves confirmed that microstimulation was most probably only activating axons within the MPO, and current spread to lateral fibers of passage following macrostimulation in the MPO was not detected in the branching studies.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>3732445</pmid><doi>10.1007/BF00235665</doi><tpages>11</tpages></addata></record> |
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| ispartof | Experimental brain research, 1986-01, Vol.63 (1), p.205-215 |
| issn | 0014-4819 1432-1106 |
| language | eng |
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| subjects | Animals Axons - physiology Biological and medical sciences Cats Central nervous system Electrophysiology Evoked Potentials Female Frontal Lobe - anatomy & histology Frontal Lobe - physiology Fundamental and applied biological sciences. Psychology Limbic System - anatomy & histology Limbic System - physiology Male Neural Pathways - anatomy & histology Neural Pathways - physiology Preoptic Area - anatomy & histology Preoptic Area - physiology Vertebrates: nervous system and sense organs |
| title | Electrophysiological evidence for a projection from medial prefrontal and anterior limbic cortex toward the medial preoptic area in the cat |
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