Spontaneous EEG spikes in the normal hippocampus. I. Behavioral correlates, laminar profiles and bilateral synchrony
Identifieur interne : 001680 ( Main/Merge ); précédent : 001679; suivant : 001681Spontaneous EEG spikes in the normal hippocampus. I. Behavioral correlates, laminar profiles and bilateral synchrony
Auteurs : Shinya S. Suzuki [Canada] ; Grant K. Smith [Canada]Source :
- Electroencephalography and Clinical Neurophysiology [ 0013-4694 ] ; 1987.
Abstract
Spontaneous EEG and unit activities were recorded from the CA1 region of the dorsal hippocampus by means of a movable microelectrode in normal behaving rats. Large amplitude (< 4mV) negative EEG spikes (SPKs) of 40–100 msec duration with frequencies in the range of 0.2–5/sec were consistently recorded from the middle apical dendritic layer (stratum radiatum) during awake immobility, grooming and slow-wave sleep. SPKs were replaced by rhythmical slow activity (RSA) during walking and paradoxical sleep. Laminar analysis indicated that SPKs were positive in stratum oriens, negative in stratum radiatum and polarity reversal just below stratum pyramidale. Peak positivity (about 1 mV on average) and peak negativity (2 mV) occurred some 80 μm above and 200 μm below the reversal point, respectively. The SPKs were invariably accompanied by synchronous burst discharges in stratum pyramidale. Bilateral recordings demonstrated that SPKs occurred synchronously in large areas of the CA1 field of the two hippocampi. These results suggest that the SPK represents a massive synaptic excitation of middle apical dendrites triggering synchronous burst discharges in a population of pyramidal cell bodies. A possibility was discussed that these non-pathological SPKs and interictal spikes share some common underlying mechanisms.
Url:
DOI: 10.1016/0013-4694(87)90123-4
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000E95
- to stream Istex, to step Curation: 000A42
- to stream Istex, to step Checkpoint: 000E01
Links to Exploration step
ISTEX:7F1E80AF0618294C8033650759976BD3047718E2Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Spontaneous EEG spikes in the normal hippocampus. I. Behavioral correlates, laminar profiles and bilateral synchrony</title><author><name sortKey="Suzuki, Shinya S" sort="Suzuki, Shinya S" uniqKey="Suzuki S" first="Shinya S." last="Suzuki">Shinya S. Suzuki</name></author><author><name sortKey="Smith, Grant K" sort="Smith, Grant K" uniqKey="Smith G" first="Grant K." last="Smith">Grant K. Smith</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:7F1E80AF0618294C8033650759976BD3047718E2</idno><date when="1987" year="1987">1987</date><idno type="doi">10.1016/0013-4694(87)90123-4</idno><idno type="url">https://api.istex.fr/document/7F1E80AF0618294C8033650759976BD3047718E2/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000E95</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000E95</idno><idno type="wicri:Area/Istex/Curation">000A42</idno><idno type="wicri:Area/Istex/Checkpoint">000E01</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000E01</idno><idno type="wicri:doubleKey">0013-4694:1987:Suzuki S:spontaneous:eeg:spikes</idno><idno type="wicri:Area/Main/Merge">001680</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Spontaneous EEG spikes in the normal hippocampus. I. Behavioral correlates, laminar profiles and bilateral synchrony</title><author><name sortKey="Suzuki, Shinya S" sort="Suzuki, Shinya S" uniqKey="Suzuki S" first="Shinya S." last="Suzuki">Shinya S. Suzuki</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Psychology, McMaster University, Hamilton</wicri:regionArea><orgName type="university">Université McMaster</orgName><placeName><settlement type="city">Hamilton (Ontario)</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Smith, Grant K" sort="Smith, Grant K" uniqKey="Smith G" first="Grant K." last="Smith">Grant K. Smith</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Psychology, McMaster University, Hamilton</wicri:regionArea><orgName type="university">Université McMaster</orgName><placeName><settlement type="city">Hamilton (Ontario)</settlement><region type="state">Ontario</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Electroencephalography and Clinical Neurophysiology</title><title level="j" type="abbrev">EEG</title><idno type="ISSN">0013-4694</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1987">1987</date><biblScope unit="volume">67</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="348">348</biblScope><biblScope unit="page" to="359">359</biblScope></imprint><idno type="ISSN">0013-4694</idno></series><idno type="istex">7F1E80AF0618294C8033650759976BD3047718E2</idno><idno type="DOI">10.1016/0013-4694(87)90123-4</idno><idno type="PII">0013-4694(87)90123-4</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0013-4694</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Spontaneous EEG and unit activities were recorded from the CA1 region of the dorsal hippocampus by means of a movable microelectrode in normal behaving rats. Large amplitude (< 4mV) negative EEG spikes (SPKs) of 40–100 msec duration with frequencies in the range of 0.2–5/sec were consistently recorded from the middle apical dendritic layer (stratum radiatum) during awake immobility, grooming and slow-wave sleep. SPKs were replaced by rhythmical slow activity (RSA) during walking and paradoxical sleep. Laminar analysis indicated that SPKs were positive in stratum oriens, negative in stratum radiatum and polarity reversal just below stratum pyramidale. Peak positivity (about 1 mV on average) and peak negativity (2 mV) occurred some 80 μm above and 200 μm below the reversal point, respectively. The SPKs were invariably accompanied by synchronous burst discharges in stratum pyramidale. Bilateral recordings demonstrated that SPKs occurred synchronously in large areas of the CA1 field of the two hippocampi. These results suggest that the SPK represents a massive synaptic excitation of middle apical dendrites triggering synchronous burst discharges in a population of pyramidal cell bodies. A possibility was discussed that these non-pathological SPKs and interictal spikes share some common underlying mechanisms.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/CobaltMaghrebV1/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001680 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 001680 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= CobaltMaghrebV1
|flux= Main
|étape= Merge
|type= RBID
|clé= ISTEX:7F1E80AF0618294C8033650759976BD3047718E2
|texte= Spontaneous EEG spikes in the normal hippocampus. I. Behavioral correlates, laminar profiles and bilateral synchrony
}}
| This area was generated with Dilib version V0.6.32. |  |