Abstract：
:Microdialysis is a useful tool for administering drugs into localized regions of brain tissue, but the diffusion of drugs from the probe has not been systematically examined. Lidocaine (10%) and tetrodotoxin (TTX, 10 microM), drugs typically used in neural inactivation studies, were infused through a microdialysis probe into raccoon somatosensory cortex while evoked responses were recorded at four electrodes equally spaced 0.5--2.0 mm from the probe. The decreases in evoked response amplitude as a function of time and distance from the probe were used as functional measures to describe the time course and spread of the drugs. TTX inactivated distant sites more quickly and to a greater extent than lidocaine. Responses recovered within approximately 40 min after termination of lidocaine, but did not recover for at least 2 h after TTX. Based on these measurements, we estimated that, at the concentrations used, lidocaine has a maximal spread of 2.1 mm, while TTX could spread as far as 4.8 mm from the microdialysis probe. However, in terms of significant inactivation of neuronal activity, lidocaine and TTX have an effective spread of 1 and 2 mm, respectively.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Boehnke SE,Rasmusson DDdoi
10.1016/s0165-0270(00)00348-4subject
Has Abstractpub_date
2001-02-15 00:00:00pages
133-41issue
2eissn
0165-0270issn
1872-678Xpii
S0165-0270(00)00348-4journal_volume
105pub_type
杂志文章abstract：BACKGROUND:Multiscale entropy (MSE) estimates the predictability of a signal over multiple temporal scales. It has been recently applied to study brain signal variability, notably during aging. The grounds of its application and interpretation remain unclear and subject to debate. METHOD:We used both simulated and exp...
journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(84)90008-6
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.02.010
更新日期：2012-04-30 00:00:00
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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doi：10.1016/j.jneumeth.2005.04.009
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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doi：10.1016/j.jneumeth.2006.09.012
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.06.007
更新日期：2012-07-30 00:00:00
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journal_title：Journal of neuroscience methods
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doi：10.1016/j.jneumeth.2014.12.001
更新日期：2015-02-15 00:00:00
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.07.010
更新日期：2012-10-15 00:00:00
abstract：:The present work introduces an electrode microdrive system small enough to be placed into two distinct brain areas in head-fixed mice. To meet the space constraint imposed by the size of mice and the additional presence of a head post, the size and weight of the components were minimized. In the current version, an in...
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更新日期：2010-03-15 00:00:00
