Specific characteristics of cholinergic mechanisms of short-term memory in monkeys for different types of visual information: The effects of amizil
| Autor: | K. N. Dudkin, I. V. Chueva |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Male
Short-term memory Muscarinic Antagonists Stimulus (physiology) Pharmacological treatment Parasympathetic Nervous System Animals Size Perception biology General Neuroscience Neurophysiology biology.organism_classification Macaca mulatta Receptors Muscarinic Form Perception Rhesus macaque Motor reaction Memory Short-Term Benactyzine Space Perception Visual Perception Cholinergic Female Psychology Neuroscience Cholinergic mechanisms Color Perception Photic Stimulation |
| Zdroj: | Neuroscience and Behavioral Physiology. 29:23-29 |
| ISSN: | 1573-899X 0097-0549 |
| DOI: | 10.1007/bf02461354 |
| Popis: | Experiments on rhesus macaques were used to study the relationship between the characteristics of delayed visual differentiation and stimulus properties in conditions of pharmacological treatment with the m-cholinoreceptor blocker amizil, with the aim of identifying how modification of cholinergic structures affects different types of information. Disturbances to short-term memory for all stimuli consisted of reductions in the duration of retention and increases in motor reaction times, but occurred at different doses of the blocker: amizil at a dose of 0.3 mg/kg significantly decreased the retention duration for information relating to spatial relationships. Delayed discrimination of shape, contrast, and size worsened after treatment with amizil at a dose of 0.45-0.50 mg/kg, while decreases in the duration of short-term storage of information relating to color started after amizil doses of 0.6-0.8 mg/kg. It is suggested that the short-term memory system includes a set of neurophysiological mechanisms in which the cholinergic structures are organized differently and whose specific properties result in differences in the characteristics of short-term storage of different types of visual information. |
| Databáze: | OpenAIRE |
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