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7 votes
Accepted

Organic battery?

I don't have the math at hand for the actually energy efficiency, but let's just start from the storage capacity. Basically, an electric eel wouldn't make a very good battery. They could be a decent, ...
Bryan Krause's user avatar
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7 votes

Why does an electric shock contract the muscle?

Nice Question! Lets first introduce ourselves to the topic i.e. Electrical Muscle Stimulation. Electrical muscle stimulation (EMS), also known as neuromuscular electrical stimulation (NMES) or ...
another 'Homo sapien''s user avatar
2 votes

What are ECT parameters?

Peterchev et al. (2010) reports The current amplitude is [... ] held fixed at the device maximum (e.g., 800 mA or 900 mA)... and that [constant-voltage devices are] now obsolete The total ...
AliceD's user avatar
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2 votes
Accepted

Neuron stimulation experiments

Short answer Although outside my direct area of expertise, there is quite a lot of literature on the topic. The trick often is to use the correct keywords. Key in "recording + stimulating + ensemble + ...
AliceD's user avatar
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2 votes
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How are neurons selective towards specific stimuli?

Sensory receptors and neurons get their selectivity from physical processes and their position in space. For example, photoreceptor cells in the retina respond to light in a specific position in space ...
Bryan Krause's user avatar
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2 votes
Accepted

Spatiotemporal patterns in neural networks

Unfortunately, I haven't looked at this sort of literature for a long time, but here are some thoughts with which to start. Your question is about "spatiotemporal patterns" of neural systems. One of ...
user3658307's user avatar
1 vote

Would muscles still twitch if the applied potential is reversed?

A nerve fiber is something like a cylindrical tube: it has walls (cell membrane) on all sides, and at rest is a bit negative inside, like this: There are channels in the membrane that are sensitive ...
Bryan Krause's user avatar
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1 vote

Help me understand voltage patch clamping

I'll try to answer the sub questions 1-by-1 Does that mean that the change in membrane potential that I did resulted in changes in the conformational states of ion channels which in turn changed the ...
AliceD's user avatar
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1 vote
Accepted

Is there a physiological reason why direct lightning strikes are not lethal for everyone or does it all come down to dumb luck?

Is there a physiological reason why direct lightning strikes are not lethal for everyone or does it all come down to dumb luck? To be lethal a lighting strike has to do enough damage to a critical ...
user1850479's user avatar
1 vote

How is the electrical potential difference distributed between two stimulating electrodes?

None of the three scenarios you describe are really different from another. Whatever process is used inside the amplifier, a voltage describes a potential difference between two points. It does not ...
Bryan Krause's user avatar
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1 vote

How is the electrical potential difference distributed between two stimulating electrodes?

The situation is quite reminiscent of a Voltage clamp experiment (Fig. 1), where one amplifier (amplifier 1 in Fig. 1) records the potential difference (V1 - V2 in Fig. 1) between two electrodes and ...
AliceD's user avatar
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1 vote

Can anyone explain the idea of anodic nerve stimulation?

Short answer Both anodic and cathodic current pulses can evoke neural activity, as shown in your image. Background You have to be aware that the current direction is arbitrary and the 'convention' ...
AliceD's user avatar
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1 vote

Can neurons be inhibited with electric current?

In practice, focal electrical stimulation of the brain can be used to prevent or abrogate seizures. There is a device marketed for this. from https://www.scientificamerican.com/article/implant-...
Willk's user avatar
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1 vote

Can neurons be inhibited with electric current?

Yes, but maybe not how you think. It is important to recognize that voltages refer to potential differences. When we say the "a cell is at -65mV" for example, we mean "The potential difference across ...
Bryan Krause's user avatar
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