Vibrotactile adaptation

Time course and action spectrum of vibrotactile adaptation.

In a series of experiments designed to explore the processes underlying adaptation of the sense of flutter-vibration, vibrotactile threshold was measured on the pad of the index finger, using Békésy tracking. Unadapted thresholds were first measured, for a number of frequencies (4-90 Hz) and contactor sizes (1-8 mm diameter). As expected, these measurements indicated the presence of (1) a Pacin...

Vibrotactile Score for Designing Vibrotactile Patterns Vibrotactile Score for Designing Vibrotactile Patterns

Human vibrotactile frequency discriminative capacity after adaptation to 25 Hz or 200 Hz stimulation.

A two-interval forced-choice (2-IFC) tracking procedure was used to evaluate the effects of a 15-s pre-exposure to either 25 Hz or 200 Hz stimulation ("25 Hz or 200 Hz adaptation") on human vibrotactile frequency discrimination threshold (frequency DL/Weber fraction). Three subjects were studied. All stimuli (standard and comparison) were delivered to a central location on the thenar eminence o...

Title: BOLD adaptation in vibrotactile stimulation: Neuronal networks involved in frequency discrimination

The present functional magnetic resonance imaging (fMRI) study investigated human brain regions subserving the discrimination of vibrotactile frequency. An event-related adaptation paradigm (Grill-Spector et al. 1999) was used in which blood-oxygen-level-dependent (BOLD) responses are lower to same compared to different pairs of stimuli (BOLD adaptation). This adaptation effect serves as an ind...

BOLD adaptation in vibrotactile stimulation: neuronal networks involved in frequency discrimination.

The present functional magnetic resonance imaging (fMRI) study investigated human brain regions subserving the discrimination of vibrotactile frequency. An event-related adaptation paradigm was used in which blood-oxygen-level-dependent (BOLD) responses are lower to same compared with different pairs of stimuli (BOLD adaptation). This adaptation effect serves as an indicator for feature-specifi...