12
Lower Intensity, Multi-concurrent Signal, Multi-positional Stimulation
In cases where a very strong stimulus is not needed (such as threshold studies),
but it is necessary to stimulate more than one body part at a time with different signals
(i.e. it is necessary to stimulate the right hand with IOOHz sinusoid and the left with a
200Hz sinusoid), a cheaper, less powerful multichannel amplifier can be used along with
a multi-channel sound card. When using this configuration a Sony STG-5500 home
theatre receiver (www.sony.com) was used, providing up to 55 volts-peak.