A value of 55 mV corresponds to a distance of 70 mm from the active neuron. This value of 70 mm is the radial distance from a given electrode which defines the activity region of the 37 electrode system. Figure 4 depicts the threshold effect of adjacent sensor channels, and the subsequent filter output. Pt is bio-compatible. Pt within the body will not cause immune reactions.
Platinum is non-toxic.
These characteristics include low thermal conductivity, good stability in a high oxidative state, high electrical conductivity, and a good frequency response. When the tines of the multichannel electrode array are mounted on a suitable substrate. This environment requires a high ionization potential of the sensor material, such that the sensor will not dissolve in a chronic implant. The pH of the human body is 7.35. Very thin tines impale a nerve and cause the least damage to neurons within the nerve.