Mechanism of olfactoty memory for matin in fish

点击翻译按钮获取中文摘要

Dentro-dendritic mitral-to-granule cell synapse in the carp olfactory bulb shows both long-term and short-term plasticity (LTP and STP) after low frequency tetanic stimulation (5-10 Hz, 200 pulses) applied to the olfactory tract (OT) (Anzai et al., 1995 ; anzai and Satou, 1996). As the index of the synaptic transmission OT-evoked field potential (C2 component) was used. In the present study we tested whether or not field potentials with similar plastic property can be evoked also in the olfactory bulb of the salmonid fish (hime salmon, rainbow trout and steelhead trout). As the results we found that (1) C2 component of the field potential was evoked by electrical stimulation applied to the ventral part of the rostral telencephalon and (2) it showed a plastic shange after low frequency tetanic stimulation (8 Hz, 500 pulses).