More than 200 years ago, humans discovered the fact that animals were charged, and used bioelectricity generated by torpedoes to treat mental illness. At the end of 18, L. galvani found that frog muscles contract when they contact coils made of different metals, and put forward the viewpoint of "animal electricity".
From 65438 to 0960, electronic computers began to be applied to the study of electrophysiology, so that evoked potentials could be clearly distinguished from spontaneous brain waves, and the parameters of cell release could be accurately analyzed and calculated.
Extended data:
Bioelectric pressure:
The organism is stressed, that is, when stimulated by a certain intensity (threshold), it will cause changes in cell metabolism or function. This kind of stimulus that causes change (sudden excitement) should have a certain rate of change, and slowly increasing the intensity of stimulus can not cause stress response.
If direct current is used as a stimulus, a stress reaction occurs at the cathode when power is on and at the anode when power is off. After the stress reaction, it takes a recovery period (refractory period) to respond to the stimulus again. In the process of stress reaction, it is often accompanied by changes in cell membrane potential or tissue polarity.
The local electrical response of plants The stress of plants is very slow and often confined to the stimulated area. The intensity of the reaction depends on the intensity of the stimulus, and the negative potential changes at the stimulus point.
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