Scopolamine impairs object exploration but not habituation in rats. 1993

I Lukaszewska
Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland.

Memory of a novel object was examined in saline (Sal) and scopolamine (Scopo) treated rats (1.0 mg/kg). Scopo rats showed lower overall exploration time than Sal rats, resulting mainly from shorter durations per contact. In a second exposure to the same object, after 1 min or 20 min interval, both groups displayed marked decrease of exploration indicating between-session habituation. The shorter time spent by Scopo rats on investigation of an object during a single approach might be interpreted as a deficit in maintenance of attention. Nevertheless, Scopo rats were able to acquire sufficient information for the retention during 20 min interval, as indicated by habituation, which is an elementary index of memory.

UI MeSH Term Description Entries
D008297 Male Males
D003864 Depression, Chemical The decrease in a measurable parameter of a PHYSIOLOGICAL PROCESS, including cellular, microbial, and plant; immunological, cardiovascular, respiratory, reproductive, urinary, digestive, neural, musculoskeletal, ocular, and skin physiological processes; or METABOLIC PROCESS, including enzymatic and other pharmacological processes, by a drug or other chemical. Chemical Depression,Chemical Depressions,Depressions, Chemical
D005106 Exploratory Behavior The tendency to explore or investigate a novel environment. It is considered a motivation not clearly distinguishable from curiosity. Curiosity,Novelty-Seeking Behavior,Behavior, Exploratory,Behavior, Novelty-Seeking,Behaviors, Exploratory,Behaviors, Novelty-Seeking,Curiosities,Exploratory Behaviors,Novelty Seeking Behavior,Novelty-Seeking Behaviors
D006185 Habituation, Psychophysiologic The disappearance of responsiveness to a repeated stimulation. It does not include drug habituation. Habituation (Psychophysiology),Habituation, Psychophysiological,Psychophysiologic Habituation,Psychophysiological Habituation,Habituations (Psychophysiology)
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012601 Scopolamine An alkaloid from SOLANACEAE, especially DATURA and SCOPOLIA. Scopolamine and its quaternary derivatives act as antimuscarinics like ATROPINE, but may have more central nervous system effects. Its many uses include an anesthetic premedication, the treatment of URINARY INCONTINENCE and MOTION SICKNESS, an antispasmodic, and a mydriatic and cycloplegic. Hyoscine,Scopolamine Hydrobromide,Boro-Scopol,Isopto Hyoscine,Kwells,Scoburen,Scopace,Scopoderm TTS,Scopolamine Cooper,Transderm Scop,Transderm-V,Travacalm HO,Vorigeno,Boro Scopol,Transderm V
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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