[Age-related dynamics of thalamic-cortical evoked potentials in the rabbit in the early period of life].
Data have been obtained on development of evoked potentials in the sensorimotor cortex to electrical stimulation of the thalamic ventroposterolateral nucleus (VPL) in rabbits in early ontogeny. In 3-5 days rabbits, under four times increase of threshold electric stimulation of VPL the thalamocortical response (TCR) is presented by a positive-negative potential with a long latency and minimum amplitude parameters. Second and third TCR positive components to increasing of threshold value of electric stimulation 4 times, are differentiated from 7-8 days age. Age dynamics of TCR amplitude-temporal parameters is characterized by a shortening of latency and an increase of oscillations amplitude, most expressed at 2-3 weeks of postnatal life. TCR of one month rabbit to increased threshold electrical stimulation of VPL is presented by short-latency positive-negative oscillation with a positive phase consisting of three components with successively increasing amplitudes.
Shimko
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D000344:Afferent Pathways / Q000502:physiology; D000375:Aging / Q000502:physiology*; D000818:Animals; D004558:Electric Stimulation; D004567:Electrodes, Implanted; D005071:Evoked Potentials; D009044:Motor Cortex / Q000502:physiology*; D011817:Rabbits; D011930:Reaction Time / Q000502:physiology; D013788:Thalamus / Q000502:physiology*; D013997:Time Factors
Vozrastnaia dinamika talamo-kortikal'nykh vyzvannykh potentsialov u krolika v rannem periode zhizni.