1
40
4
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1016/0006-8993(94)91421-4" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/0006-8993(94)91421-4</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
37-48
Issue
1
Volume
635
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Laminar Pattern Of Synaptic Activity In Rat Primary Visual-cortex - Comparison Of In-vivo And In-vitro Studies Employing The Current Source Density Analysis
Publisher
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Brain Research
Date
A point or period of time associated with an event in the lifecycle of the resource
1994
1994-01
Subject
The topic of the resource
anuran cerebellum; area ca1; cerebral-cortex; connections; current source density; electrically evoked-potentials; electrophysiology; field; multiple unit-activity; neocortex; neurons; Neurosciences & Neurology; organization; potentials; rat; slice; striate cortex
Creator
An entity primarily responsible for making the resource
Kenanvaknin G; Teyler T J
Description
An account of the resource
In the present study we employed current source density analysis to study the major excitatory/inhibitory pathways in rat primary visual cortex in vivo and in vitro. A natural photic stimulus was used in vivo and served as a baseline for understanding the results obtained from in vivo and in vitro studies employing electrical stimulation of the white matter. The temporal pattern of synaptic activity in the cortex revealed an early excitation, characterized by sinks of short duration and high amplitude, that was followed by inhibition, characterized by long lasting, low amplitude active sources. The spatial pattern of this synaptic activity displayed early excitatory inputs to layer IV and lower layer III. Supragranular layers exhibited synaptic activity of longer latency at more superficial layers. The excitatory activity of the infragranular layers was delayed relative to that in layer IV. This spatial and temporal pattern of synaptic activity supports the model of sequential information processing in visual cortex. Based on the results of electrical and photic stimulations in vivo we conclude that electrical stimulation of white matter activate the thalamo-cortical input which results in a similar laminar pattern of postsynaptic activity evoked by photic stimulation. Electrical stimulation revealed additional antidromic and anti-orthodromic activity (collaterals of descending axons to white matter), resulting in the early fast components and the additional activity in layer VI. The major differences between in vivo and in vitro laminar pattern of synaptic activity (applying electrical stimulation) were reduced synaptic activity in layer IV and increased synaptic activity in the infragranular layers in the in vitro preparation. We concluded that the visual cortex slice preparation preserves the major pathways and electrophysiological function of this area. The technical advantages of the cortical slice preparation will facilitate studies and provide additional insight into this complex cortical network.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1016/0006-8993(94)91421-4" target="_blank" rel="noreferrer noopener">10.1016/0006-8993(94)91421-4</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article or Conference Abstract Publication
1994
anuran cerebellum
area ca1
Brain research
cerebral-cortex
connections
current source density
electrically evoked-potentials
Electrophysiology
field
Journal Article or Conference Abstract Publication
Kenanvaknin G
multiple unit-activity
neocortex
Neurons
Neurosciences & Neurology
organization
potentials
rat
slice
striate cortex
Teyler T J
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1016/0304-3940(93)90167-j" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/0304-3940(93)90167-j</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
43-46
Issue
1
Volume
154
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
DEVELOPMENTAL ALTERATIONS IN N-METHYL-D-ASPARTATE STIMULATED H-3 NOREPINEPHRINE RELEASE IN RAT-BRAIN CORTEX AND HIPPOCAMPUS
Publisher
An entity responsible for making the resource available
Neuroscience Letters
Date
A point or period of time associated with an event in the lifecycle of the resource
1993
1993-05
Subject
The topic of the resource
hippocampus; cortex; development; receptors; Neurosciences & Neurology; system; ethanol; postnatal-development; cerebral-cortex; visual cortex; excitatory amino-acids; [h-3]norepinephrine release; n-methyl-d-aspartate; nmda-binding-sites; norepinephrine release; slice
Creator
An entity primarily responsible for making the resource
Brown L M
Description
An account of the resource
Developmental alterations in N-methyl-D-aspartate (NMDA)-stimulated [H-3]norepinephrine release from rat brain cortical and hippocampal slices were studied. NMDA (10-1000 muM) resulted in a concentration-dependent increase in [H-3]norepinephrine efflux; maximal responses (% released) in the cortex were: (1.53 +/- 0. 12, 3.68 +/- 0.20, 2.94 +/- 0.20, 4.60 +/- 0.28 and 5.28 +/- 0.33) and the hippocampal responses were: (1.90 +/- 0.18, 3.84 +/- 0.23, 3.60 +/- 0.28, 5.16 +/- 0.38 and 5.81 +/- 0.45) at varying postnatal ages (1, 7, 14, 21 and 90 days) respectively. Cortical tissue from 7-day-old pups exhibited a transient increase in maximal efflux and a decrease in EC50. These results indicated that developmental alterations in the NMDA receptor appear to be translated into differences in NMDA stimulated [H-3]norepinephrine release.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1016/0304-3940(93)90167-j" target="_blank" rel="noreferrer noopener">10.1016/0304-3940(93)90167-j</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article or Conference Abstract Publication
[h-3]norepinephrine release
1993
Brown L M
cerebral-cortex
cortex
development
ETHANOL
excitatory amino-acids
Hippocampus
Journal Article or Conference Abstract Publication
N-Methyl-D-Aspartate
Neuroscience letters
Neurosciences & Neurology
nmda-binding-sites
norepinephrine release
postnatal-development
Receptors
slice
system
visual cortex
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1016/j.brainres.2005.03.023" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/j.brainres.2005.03.023</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
164-174
Issue
1
Volume
1045
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Is humanlike cytoarchitectural asymmetry present in another species with complex social vocalization? A stereologic analysis of mustached bat auditory cortex
Publisher
An entity responsible for making the resource available
Brain Research
Date
A point or period of time associated with an event in the lifecycle of the resource
2005
2005-05
Subject
The topic of the resource
asymmetry; cerebral-cortex; combination-sensitive neurons; DSCF; hemispheric-specialization; human-brain; japanese macaques; lateralization; mustached bat; neural; Neurosciences & Neurology; planum temporale; pteronotus-parnellii; rhesus-monkeys; social vocalization; stereology; temporal speech region; V1
Creator
An entity primarily responsible for making the resource
Sherwood C C; Raghanti M A; Wenstrup J J
Description
An account of the resource
Considerable evidence suggests that left hemispheric lateralization for language comprehension in humans is associated with cortical microstructural asymmetries. However, despite the fact that left hemispheric dominance for the analysis of species-specific social vocalizations has been reported in several other species, little is known concerning microstructural asymmetries in auditory cortex of nonhumans. To test whether such neuroanatomical lateralization characterizes another species with complex social vocalizations, we performed stereologic analyses of Nissl-stained cells in layer III of area DSCF in mustached bats (Pteronotus parnellii). Area DSCF was selected because it contains neurons which are sensitive to several temporal features of conspecific vocalizations. Primary visual cortex (V I) was also studied as a comparative reference. We measured neuron densities, glial densities, and neuronal volumes in both hemispheres of 10 adult male bats. Results indicate that these variables are not significantly lateralized in area DSCF or V I. Additionally, magnopyramidal cells (i.e., the largest 10% of neurons from both hemispheres) were not asymmetric in their frequency of distribution at the population level. Although several individual bats had asymmetric neuron distributions, consistent hemispheric bias was not evident. Absence of population-level microstructural asymmetry in area DSCF of mustached bats suggests alternative evolutionary scenarios including: (1) microstructural lateralization of auditory cortical circuitry may be a unique adaptation for human language, and (2) the specialized biosonar function of mustached bat auditory cortex may require symmetrical cytoarchitectural structure. Resolution of these alternatives will require further data on the microstructure of auditory cortex in species with lateralized perception of acoustic social communication. (C) 2005 Elsevier B.V. All rights reserved.
Identifier
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<a href="http://doi.org/10.1016/j.brainres.2005.03.023" target="_blank" rel="noreferrer noopener">10.1016/j.brainres.2005.03.023</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2005
asymmetry
Brain research
cerebral-cortex
combination-sensitive neurons
DSCF
hemispheric-specialization
human-brain
japanese macaques
Journal Article
lateralization
mustached bat
neural
Neurosciences & Neurology
planum temporale
pteronotus-parnellii
Raghanti M A
rhesus-monkeys
Sherwood C C
social vocalization
Stereology
temporal speech region
V1
Wenstrup J J
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/(sici)1098-2396(19990315)31:4%3C250::aid-syn2%3E3.3.co;2-q" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/(sici)1098-2396(19990315)31:4%3C250::aid-syn2%3E3.3.co;2-q</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
250-255
Issue
4
Volume
31
Search for Full-text
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Castration differentially alters H-3 nisoxetine binding to norepinephrine uptake sites in olfactory bulb and frontal cortex of male rats
Publisher
An entity responsible for making the resource available
Synapse
Date
A point or period of time associated with an event in the lifecycle of the resource
1999
1999-03
Subject
The topic of the resource
androgens; cerebral-cortex; chemical cues; conspecific odors; depression; dopamine; h-3 nisoxetine; hormone-releasing hormone; induced plasticity; locus-coeruleus; memory/recognition; Neurosciences & Neurology; norepinephrine transporter; olfaction; transporter; transporter messenger-rna; tyrosine-hydroxylase
Creator
An entity primarily responsible for making the resource
Shang Y L; Boja J W; Dluzen D E
Description
An account of the resource
In the present study, [H-3]nisoxetine binding to norepinephrine (NE) uptake sites and [H-3]norepinephrine uptake were investigated within olfactory bulb (OB) and frontal cortex homogenates from intact and castrated male rats. Statistically significant reductions in the number of [H-3] nisoxetine binding sites (B-max) were found in OB from the castrates, while significantly increased B-max values were obtained in the frontal cortex. Castration also significantly altered the affinity (K-d) of [H-3]nisoxetine binding in the frontal cortex, but not in the OB. Assessment of [H-3]norepinephrine uptake showed that in neither brain regions were there any statistically significant differences in K-m nor V-max between the castrated and intact male rats, indicating that the basal uptake process is not changed following castration in either of these brain areas. These results demonstrate the differential effects of castration upon [H-3]nisoxetine binding sites between the OB and frontal cortex. Such findings provide new evidence for one of the mechanisms by which androgens may modulate central noradrenergic activity. Synapse 31:250-255, 1999. (C) 1999 Wiley-Liss, Inc.
Identifier
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<a href="http://doi.org/10.1002/(sici)1098-2396(19990315)31:4%3C250::aid-syn2%3E3.3.co;2-q" target="_blank" rel="noreferrer noopener">10.1002/(sici)1098-2396(19990315)31:4%3C250::aid-syn2%3E3.3.co;2-q</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
1999
androgens
Boja J W
cerebral-cortex
chemical cues
conspecific odors
Depression
Dluzen D E
Dopamine
h-3 nisoxetine
hormone-releasing hormone
induced plasticity
Journal Article
locus-coeruleus
memory/recognition
Neurosciences & Neurology
norepinephrine transporter
olfaction
Shang Y L
synapse
transporter
transporter messenger-rna
tyrosine-hydroxylase