 Mycelium-bound composites have been proposed as alternative materials for a variety of applications such as thermal and acoustic building panels, product packaging, and more. These composites can be made active through the use of live mycelium, which reacts to environmental conditions and stimuli. This research examines the electrical sensitivity of these composites to changes in their moisture content, ranging from 95% to 5%. When partially dried, trains of electrical spikes initiated at frequencies of up to 20 kHz. When the surfaces of the composites were covered with an impermeable layer, higher electrical activity was observed. Additionally, electrical spikes were seen both spontaneously and when treated by water droplets on the surface. The electrical activity of the composites was also linked to electrode depth, suggesting that deeper electrodes could provide greater sensitivity. Furthermore, this research demonstrates the potential of mycelium-bound composites for the development of smart buildings, wearables, and other applications. This article was authored by Neil Phillips, Anthony Gandia, and Andrew Adamatsky. We are article.tv, links in the description below.