1
40
3
-
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
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
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
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
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/10.1002/mds.20044" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/mds.20044</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
416-425
Issue
4
Volume
19
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
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
Association Of Cortical Disinhibition With Tic, Adhd, And Ocd Severity In Tourette Syndrome
Publisher
An entity responsible for making the resource available
Movement Disorders
Date
A point or period of time associated with an event in the lifecycle of the resource
2004
2004-04
Subject
The topic of the resource
ADHD; adults; basal ganglia; children; cortical inhibition; deficit-hyperactivity disorder; excitability; excitation; human; inhibition; motor cortex; Neurosciences & Neurology; organization; projections; stimulation; Tourette syndrome; transcranial magnetic; transcranial magnetic stimulation
Creator
An entity primarily responsible for making the resource
Gilbert D L; Bansal A S; Sethuraman G; Sallee F R; Zhang J; Lipps T; Wassermann E M
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1002/mds.20044" target="_blank" rel="noreferrer noopener">10.1002/mds.20044</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article or Conference Abstract Publication
2004
ADHD
adults
Bansal A S
basal ganglia
Children
cortical inhibition
deficit-hyperactivity disorder
excitability
excitation
Gilbert D L
Human
inhibition
Lipps T
motor cortex
MOVEMENT disorders
Neurosciences & Neurology
organization
projections
Sallee F R
Sethuraman G
Stimulation
Tourette syndrome
transcranial magnetic
transcranial magnetic stimulation
Wassermann E M
Zhang 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/10.1016/0006-8993(93)90943-h" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/0006-8993(93)90943-h</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
99-104
Issue
1
Volume
628
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
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
VISUAL DEPRIVATION DECREASES LONG-TERM POTENTIATION IN RAT VISUAL CORTICAL SLICES
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
1993
1993-11
Subject
The topic of the resource
cortex; rat; plasticity; depression; period; Neurosciences & Neurology; pathways; induction; long-term potentiation; organization; nmda receptors; evoked-potentials; visual cortex; critical; current source density; dark rearing; monocular deprivation; source density analysis
Creator
An entity primarily responsible for making the resource
Berry R L; Perkins A T; Teyler T J
Description
An account of the resource
A major finding in the visual plasticity literature is that visual deprivation is effective only during an early 'sensitive' period, which is lengthened by dark rearing. Unresolved is whether the visual cortex is in a normally plastic state prior to light stimulation. This cannot be addressed using paradigms employing light exposure to assess plasticity. Several developmental studies have investigated a plastic phenomenon termed long-term potentiation (LTP) in slices from cat (J. Neurophysiol., 59 (1988) 124-141) and rat (Brain Res., 439 (1988) 222-229) visual cortex. Susceptibility to the induction of LTP parallels the period of sensitivity to visual deprivation. This suggests that slices can be used to assay visual cortical plasticity, avoiding light exposure. In the present study, field potentials were recorded from slices of the primary visual cortices of dark-reared (DR) and control (CONT) Long Evans hooded rats (17 to 21 days). Field potential profiles recorded before and 90 min following tetanic electrical stimulation were subjected to current source density analysis, yielding extracellular current sink amplitudes. Tetanus resulted in LTP in both CONT and DR slices, but DR slices were significantly less potentiated. These results indicate that the primary visual cortex of DR animals is not fully plastic, indicating a role for light stimulation in inducing visual cortical plasticity.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1016/0006-8993(93)90943-h" target="_blank" rel="noreferrer noopener">10.1016/0006-8993(93)90943-h</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article or Conference Abstract Publication
1993
Berry R L
Brain research
cortex
critical
current source density
dark rearing
Depression
evoked-potentials
induction
Journal Article or Conference Abstract Publication
Long-Term Potentiation
monocular deprivation
Neurosciences & Neurology
nmda receptors
organization
pathways
period
Perkins A T
plasticity
rat
source density analysis
Teyler T J
visual cortex