海馬標本におけるフィールド電位記録

抄録

The recording of field potentials in hippocampal slice preparations is widely used for the purpose of elucidating the biological basis of memory function, Since the hippocampus has a unique structure of cellular and fiber layers, not only action potentials but also postsynaptic potentials can be clearly recorded as field potentials using a glass electrode with a relatively large tip. That the mechanism of polarity of field potentials recorded from synaptic layers differs from that recorded from cell layers is explained by the concepts of current sink and source.