title: [The participation of the cholinergic system of the nucleus accumbens in the differentiation of sound signals in dogs].
abstract: Chronic experiments were carried out on five dogs with a defensive instrumental reflex (IR) associated with the maintenance of the flexor posture. Was studied the influence of carbocholine bilateral microinjections (0.05-0.10 mcg) into the nucleus accumbens (NAC) on the realization of the IR and on the behavioural differentiation of acoustic signals in a defensive situation. Cholinergic system of the NAC was shown to participate in both the motor and sensory mechanisms connected with the realization of motor responses to defensive and differentiation signals. Activation of the cholinergic system of the NAC led to an "improvement" of behavioural signal differentiation probably due to an increase of attention to significant stimuli. The cholinergic system of the NAC participated in the regulation of voluntary movements. Its influence was mainly excitatory and had unspecific and prolonged character.
authors.forename: K B
authors.initials: KB
authors.lastname: Shapovalova
authors.forename: E V
authors.initials: EV
authors.lastname: Pominova
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000818:Animals; D001307:Auditory Perception / Q000187:drug effects / Q000502:physiology*; D002217:Carbachol / Q000008:administration & dosage; D002799:Cholinergic Fibers / Q000187:drug effects / Q000502:physiology*; D003216:Conditioning, Operant / Q000187:drug effects / Q000502:physiology; D003342:Corpus Striatum / Q000187:drug effects / Q000502:physiology; D004285:Dogs; D004558:Electric Stimulation / Q000379:methods; D004924:Escape Reaction / Q000187:drug effects / Q000502:physiology; D008845:Microinjections; D009714:Nucleus Accumbens / Q000187:drug effects / Q000502:physiology*; D011930:Reaction Time / Q000187:drug effects / Q000502:physiology
chemical_list: D002217:Carbachol
vernacular_title: Uchastie kholinergicheskoĭ sistemy prilezhashchego iadra v differentsirovanii zvukovykh signalov u sobak.