Reverse-Engineering Touch: Sense-Making and Making Sense with Prosthetic Neurostimulation

Abstract

At the frontier of research in neuroprosthetic limb technology, experimenters are developing systems for sensory feedback (prosthetic touch). Drawing upon two years of ethnographic fieldwork chronicling neuroprosthetic clinical trials, I interpret neurostimulation experiments as a reverse-engineering: in which efforts to engineer sensory feedback recursively inform basic scientific understanding about touch itself. In this article, I analyse reverse-engineering as technoscientific practice, phenomenological experience, and mode of knowledge-making, in which gaps between natural and artificial (or ‘electric’) touch get sustained and undone. In tracing the ways touch becomes constructed, abstracted, and experienced – including through phantom sensations and syn-aesthetic description – I examine how multiple coinciding versions of touch get produced at the level of the nervous system. I analyse the consequences of this multiplicity on theorizations of human and nonhuman touch, haptic experience, and touching subjects, sustaining epistemological and ontological openness amid efforts to pinpoint touch as a site of knowledge-making.