Quantifying spatial acuity of frequency resolved midair ultrasound vibrotactile stimuli.

ABSTRACT: Spatial acuity is a fundamental property of any sensory system. In the case of the somatosensory system, the two-point discrimination (2PD) test has long been used to investigate tactile spatial resolution. However, the somatosensory system comprises three main mechanoreceptive channels: the slowly adapting channel (SA) responds to steady pressure, the rapidly adapting channel (RA) responds to low-frequency vibration, and the Pacinian channel (PC) responds to high-frequency vibration. The use of mechanical stimuli in the classical 2PD test means that previous studies on tactile acuity have primarily focussed on the pressure-sensitive channel alone, while neglecting other submodalities. Here, we used a novel ultrasound stimulation to systematically investigate the spatial resolution of the

SUBMITTER: Cataldo A 

PROVIDER: S-EPMC10689848 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature