Abstract:
:Dogs were trained to perform an instrumental avoidance reflex of lifting and holding a limb above a pre-determined level to prevent or to interrupt painful stimulation of the same limb. A tone preceding the stimulation by 0.5 s served as the CS. During the CS the excitability of the motoneuronal pools involved in the execution of the instrumental motor response was monitored as the magnitude of the response of knee flexors to single stimuli applied to sciatic nerve. For 70-80 ms preceding the onset of the EMG of the conditioned instrumental movement, the amplitude of the muscle response progressively increased. This phenomenon is apparently analogous to that of "motor presetting" described by others for man. Bilateral pyramidotomy at the medullary level was performed following the elaboration of instrumental reflexes. It produced obvious changes in the motor performance: the latencies of conditioned movements became longer and the speed of limb lifting decreased. It did not, however, alter the preparatory increase in motoneuronal excitability. On the other hand pyramidotomy prior to elaboration of the conditioned reflex strongly affected the preparatory changes, Destruction of the red nucleus contralateral to the conditioned limb in pyramidotomized dogs resulted in disappearance for 1.5 months of the conditioned motor response to the CS. After the response had been restored, the latency of movement showed a further increase, and the presetting of the spinal system was essentially absent.
journal_name
Acta Neurobiol Exp (Wars)journal_title
Acta neurobiologiae experimentalisauthors
Ioffe MEsubject
Has Abstractpub_date
1973-01-01 00:00:00pages
729-41issue
4eissn
0065-1400issn
1689-0035journal_volume
33pub_type
杂志文章abstract::Techniques (push-pull cannula, cup, brain ventricles perfusion) allowing estimation of the amount of the ACh released in vivo from the brain are described. The main attention is paid to biochemical, physiological and morphological factors influencing the amount of ACh released and available for estimation. Conditions ...
journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1980-01-01 00:00:00
abstract::Rats with electrolytic lesions of the nucleus basalis magnocellularis were compared to sham-lesioned rats in the retention of a continuously reinforced lever-pressing response and in the acquisition and reversal of a visual discrimination task. The muscarinic agonist pilocarpine, in conjunction with the peripheral mus...
journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
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更新日期:1995-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1981-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
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更新日期:2008-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
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更新日期:2007-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
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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:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
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更新日期:1990-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1975-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2011-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1979-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1972-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
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pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2006-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1980-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
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doi:
更新日期:1993-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
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doi:
更新日期:1974-01-01 00:00:00
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更新日期:1982-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:1999-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1983-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章,评审
doi:
更新日期:1996-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:1974-01-01 00:00:00
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journal_title:Acta neurobiologiae experimentalis
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00