I work in a laboratory of neurophysiology.
The experiments goes like this: We want to stimulate neurons electrically, for this we have them in buffer (water + salts) and we have 2 electrodes submerged into the buffer. We applied a train of current (square pulses of 2 ms duration 20 Hz for 30 seconds, with a 100 mA of amplitude). The question is as follows: The current will spread through the whole buffer (≈ 100 µl) afecting all neurons in contact with buffer? or the current will move only between the electrodes and neurons behind the electrodes (not in between) will not "sense" the electric shock?
Thanks!
The experiments goes like this: We want to stimulate neurons electrically, for this we have them in buffer (water + salts) and we have 2 electrodes submerged into the buffer. We applied a train of current (square pulses of 2 ms duration 20 Hz for 30 seconds, with a 100 mA of amplitude). The question is as follows: The current will spread through the whole buffer (≈ 100 µl) afecting all neurons in contact with buffer? or the current will move only between the electrodes and neurons behind the electrodes (not in between) will not "sense" the electric shock?
Thanks!