[The organization of pulse trains in the dorsal hyperstriatum of hens in relation to the afferent input in ontogeny].
Analysis of background multicellular activity of neuronal populations in the dorsal hyperstriatum of chick embryos and baby-chicks, incubated either in darkness or under periodic illumination, revealed an impulse volley structure which is characterized by onset of discharges which follow each other in a form of small series at close intervals. These series originally may be observed in the background activity of the left dorsal hyperstriatum in "illuminated" chick embryos at the 19th day of incubation, and only at the 1st day after hatching--in the right dorsal hyperstriatum of embryos, "illuminated" although they are present in both left and right dorsal hyperstriatum in embryos incubated in darkness, the difference being presumably due to asymmetric input of visual afferentation to this structure. Series of impulse volleys with repeating intervals are considered as a reflection of the activity of local microsystems of neurons which exhibit cyclic structure and which are capable to maintain stable impulse activity in its intrinsic system of connections, which is one of the elements of a mechanism of synaptic stabilization and formation of organized neuronal complexes.
Bogdanov
O V
OV
Mikhaĭlenok
E L
EL
Malinina
E S
ES
D000344:Afferent Pathways / Q000196:embryology / Q000254:growth & development / Q000502:physiology; D000818:Animals; D000831:Animals, Newborn; D002642:Chick Embryo; D002645:Chickens / Q000502:physiology*; D003342:Corpus Striatum / Q000196:embryology / Q000254:growth & development / Q000502:physiology*; D003624:Darkness; D007395:Interneurons / Q000502:physiology; D008027:Light; D008564:Membrane Potentials / Q000502:physiology; D009474:Neurons / Q000502:physiology
Organizatsiia impul'snykh potokov v dorsal'nom giperstriatume kur v zavisimosti ot afferentnogo pritoka v ontogeneze.