[Effect of dimethoxydichlorovinylphosphate and fluostigmine on catecholaminergic structures in the rat brain].
To characterize summation-discrimination properties of the visual analyzer on rabbits under the conditions of photopic and scotopic adaptation, bioelectrical responses of the retina, optic tract, external geniculated body and visual cortex were recorded in response to intermittent photostimulation within the frequency range from 0.1 to 50 Hz and to pair flashes with intervals between them from 15 to 200 ms. The structures under study were demonstrated to be heterogenous as regards the capacities for temporary resolution of signals regardless of the fact that the differences revealed were relatively negligible. It was found that under photopic conditions, temporary discrimination was appreciably higher, the physiological intensity of stimulation being similar. Analysis of experimental material shows that the capacity for temporary resolution is determined not as much by temporary summation as by excitability dynamics.
D000110:Acetylcholinesterase / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000187:drug effects*; D002395:Catecholamines / Q000378:metabolism*; D004006:Dichlorvos / Q000506:poisoning*; D006651:Histocytochemistry; D007531:Isoflurophate / Q000494:pharmacology* / Q000506:poisoning; D008163:Luminescent Measurements; D008297:Male; D051381:Rats; D011941:Receptors, Adrenergic / Q000187:drug effects*; D011954:Receptors, Dopamine / Q000187:drug effects*; D013997:Time Factors
D002395:Catecholamines; D011941:Receptors, Adrenergic; D011954:Receptors, Dopamine; D007531:Isoflurophate; D004006:Dichlorvos; D000110:Acetylcholinesterase
Vliianie dimetoksidikhlorvinilfosfata i fliuorostignina na katekholaminergicheskie struktury mozga krys.