نتایج جستجو برای: lymnaea stagnalis
تعداد نتایج: 1208 فیلتر نتایج به سال:
Pyrethroid insecticides and heavy metals frequently co-exist in aquatic systems, due to intensive anthropogenic activities, their effects on organisms are needed be investigated. In the present work, single combined of environmentally realistic concentrations cyfluthrin copper digestive gland histology freshwater pond snail (Lymnaea stagnalis) were evaluated. Snails exposed 1 µg/L cyfluthrin, 1...
While learning and memory are related, they are distinct processes each with different forms of expression and underlying molecular mechanisms. An invertebrate model system, Lymnaea stagnalis, is used to study memory formation of a non-declarative memory. We have done so because: (1) We have discovered the neural circuit that mediates an interesting and tractable behaviour; (2) This behaviour c...
The pond snail Lymnaea stagnalis can learn conditioned taste aversion and then consolidate it into long-term memory (LTM). A high-voltage electric shock was used as the unconditioned stimulus, where we have previously used KCl. We varied the strength of both the conditioned and unconditioned stimuli to determine whether the so-called Yerkes-Dodson law prevailed. This is an empirical relationshi...
The effect of the insecticide fipronil on non-target organisms was studied on rat brain slices and identified giant neurons of the pond snail Lymnaea stagnalis. This compound acts as an antagonist on GABA(A) receptors. Although fipronil has moderate mammalian toxicity, our experiments confirmed that it modifies neuronal excitability in the rat somatosensory cortex. The amplitudes of evoked fiel...
Memories that can be recalled several hours after learning may paradoxically become inaccessible for brief periods after their formation. This raises major questions about the function of these early memory lapses in the structure of memory consolidation. These questions are difficult to investigate because of the lack of information on the precise timing of lapses. However, the use of a single...
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