William Frier

This study investigates how mechanical adaptation affects the perception of mid-air ultrasound vibrotactile stimuli, finding frequency-specific impairments in detection thresholds.

This study challenges the textbook view that high-frequency vibrotactile stimuli have poor spatial resolution by showing they can produce good spatial acuity.

This study investigates the subjective experience and physiological responses to ultrasound stimulation, finding age-related differences in intensity and pleasantness ratings and no activation of specific mechanoreceptors.