Gaitrite gold

Skin conductance signals were recorded using a commercially available portable data acquisition unit (Flexcomp Infiniti, Thought Technologies Ltd., QC, Canada). Adhesive electrodes (10mm Ag/AgCl recording surface) with conductive paste (0.5% saline in a neutral base) were placed on the palmar surface of the proximal phalanges of the index and ring fingers, bilaterally (see Figure 1). The palmar measurement site is densely innervated by sudomotor nerves that are highly sensitive to cognitive/emotional stimuli^{20 ,26 (link)} including greater attention, and mobility-related fear of falling and/or anxiety.^{23 –25 (link)} Skin conductance signals were sampled at 32 Hz, acquired separately from each hand for each participant, and saved directly to an onboard flash memory card. These data were later downloaded to a computer for offline analysis.
The GAITRite^® system (GAITRite Gold, CIR Systems, PA, USA) was used to measure the spatiotemporal gait data during the walking tasks. GAITRite^® is a portable electronic walkway that is approximately 8.2 m in length. The walkway uses pressure-sensitive sensors to capture the timing and location of foot strikes at a sampling rate of 80 Hz.