1341-Fast Circuitry of Mechanical Nociceptive Pain

Paper Talk · Jul 27, 2026 · 20m

This research identifies and characterizes two distinct populations of fast-conducting nerve fibers, known as Aδ-HTMRs, that are essential for detecting damaging mechanical stimuli and triggering protective pain responses. Unlike most previously studied pain-sensing neurons, these myelinated nociceptors possess unique physiological and anatomical traits that allow for ultra-fast reflexive withdrawals and high-level aversive learning. These neurons provide dense innervation to the skin, bones, and internal organs, forming specialized nest-like synapses onto specific projection neurons in the…