Thread: Published in Nature Neuroscience: 77% induction rate with electrodes on the scalp at 40 Hertz

About the current .
No one has the certainty say now what current will be ideal.

Very often is there lack of understanding about current ,there are many "types" of current:

Current from device (without load or standart load )
Current from device in "live" conditions during stimulation
Current density on electrodes
Current density on electrodes (edge effects)
Sensory treeshold current
Pain treeshold current
Phosphenes treeshold current
Shunting (tangental current in skin)
Current density at a cortex level
Radial current in cortex
Tangental current in cortex

*Current level at cortex does not necessarily mean effect strength

Give information about a current from the device without other parameters is quite useless

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Use 2mA (with load head+electrodes) can be OK if elecdrodes are big enought 5x5cm ,25cm2 ,80uA/cm2 current density .Still this answer is very simplefied for instance its largly depend of electrode type and positions for instance if electrodes are close the tnagental current trought skin will be larger and inrease skin fealing.

Originally Posted by ATA

About the current .
No one has the certainty say now what current will be ideal.

Very often is there lack of understanding about current ,there are many "types" of current:

Current from device (without load or standart load )
Current from device in "live" conditions during stimulation
Current density on electrodes
Current density on electrodes (edge effects)
Sensory treeshold current
Pain treeshold current
Phosphenes treeshold current
Shunting (tangental current in skin)
Current density at a cortex level
Radial current in cortex
Tangental current in cortex

*Current level at cortex does not necessarily mean effect strength

Give information about a current from the device without other parameters is quite useless

---
Use 2mA (with load head+electrodes) can be OK if elecdrodes are big enought 5x5cm ,25cm2 ,80uA/cm2 current density .Still this answer is very simplefied for instance its largly depend of electrode type and positions for instance if electrodes are close the tnagental current trought skin will be larger and inrease skin fealing.

We could perhaps try to contact with Jeff and ask him if he minds providing all of this data