Fig. 10From: Traumatic brain injury neuroelectrochemical monitoring: behind-the-ear micro-instrument and cloud applicationResolution of the amperometric AFE. A low-noise source-generated current staircase sweep (-50 pA to +50 pA with steps of 5 pA) was fed to the amperometric AFE. The voltage measured is shown at: a The I-V stage output. b The output of the programmable gain amplifier (PGA) with the gain set to × 50Back to article page