Abstract：
:Extracellular unit recording was employed to study the axonal properties and efferent projections of antidromically identified neurons in the olfactory peduncle (OP) region of a primitive eutherian macrosmatic mammal, the south american armadillo (Chaetophractus vellerosus). Of 72 cells which satisfied the criteria for antidromic invasion, 55 (76%) and 17 (24%) responded to ipsi- and contralateral olfactory bulb (IOB; COB) stimulation, respectively. The absolute refractory period (3.25 +/- 0.3 ms; mean +/- SE) and the conduction velocity (CV; 1.94 +/- 0.2 m/s; mean +/- SE) of IOB and COB driven neurons were negatively correlated (r = -0.52; p less than 0.001). In paired-shock tests (8-1950 ms interval), and early supernormal period (SPN) of increased CV and excitability was found following the relative refractory period in 82% of tested cells (N = 50); this period was followed by a late subnormal phase (SBN) of decreased CV and increased threshold in 58% of neurons (N = 50). Significant correlations were found to exist between: CV and absolute magnitude of latency variation (r = -0.55; p less than 0.001; n = 43), CV and duration of SPN and SBN periods (r = -0.60; p less than 0.002; n = 24 and r = 0.58; p less than 0.02; n = 19, respectively) and between duration of SPN and SBN phases (r = 0.79; p less than 0.001; n = 30). Maximum latency variation during the SPN and SBN periods was attained in a gradual, additive manner.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Ferreyra-Moyano H,Cinelli ARdoi
10.1007/BF00340490subject
Has Abstractpub_date
1986-01-01 00:00:00pages
527-34issue
3eissn
0014-4819issn
1432-1106journal_volume
64pub_type
杂志文章abstract：:The contribution of different cortical regions to visuospatial attention can be probed with the help of perturbation techniques, such as transcranial magnetic stimulation (TMS). Repetitive TMS (rTMS) has also been suggested as a tool for the therapy of brain injuries, by adjusting the neural excitability of injured or...
journal_title：Experimental brain research
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journal_title：Experimental brain research
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更新日期：2007-08-01 00:00:00
abstract：:Coarticulation indicates a dependence of a movement segment on a preceding segment (carry-over coarticulation) or on the segment that follows (anticipatory coarticulation). Here we study coarticulation in multidegrees of freedom human arm movements. We asked participants to transport a cylinder from a starting positio...
journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238731
更新日期：1975-07-11 00:00:00
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journal_title：Experimental brain research
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pub_type： 杂志文章
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：1994-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228914
更新日期：1989-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00279657
更新日期：1988-01-01 00:00:00
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更新日期：2008-09-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00241378
更新日期：1996-06-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1732-x
更新日期：2004-04-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230917
更新日期：1985-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-004-2110-z
更新日期：2005-03-01 00:00:00
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doi：10.1007/s00221-014-3958-1
更新日期：2014-09-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s00221-004-2209-2
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更新日期：2014-11-01 00:00:00
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更新日期：2016-10-01 00:00:00
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pub_type： 杂志文章,随机对照试验
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更新日期：2013-04-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228901
更新日期：1989-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238391
更新日期：1981-01-01 00:00:00
