Saliva Characteristics and Individual Sensitivity to Phenolic Astringent Stimuli

Temporary modification of salivary protein profile and individual responses to repeated phenolic astringent stimuli.

The extent of the change in salivary protein characteristics after repeated stimulations was shown to be correlated to differences in perceived astringency. Salivary characteristics of 77 subjects were compared after masticatory (S1) and taste/masticatory (S2) stimulations. The variations (S2 minus S1) of protein concentration and saliva haze-forming capacity (HFC) were used to define 3 subject...

Corneal and conjunctival sensitivity to air stimuli.

AIMS To determine the repeatability of ocular surface sensitivity to mechanical stimulation using air stimuli and the effect of contact lens (CL) wear on sensitivity. METHODS Repeatability: 14 subjects (24-39 years) participated. Mechanical sensitivity to warmed (34 degrees C) and ambient (20 degrees C) air was measured for the central cornea (CC), inferior cornea (IC), and inferior conjuncti...

Fear from the heart: sensitivity to fear stimuli depends on individual heartbeats.

Cognitions and emotions can be influenced by bodily physiology. Here, we investigated whether the processing of brief fear stimuli is selectively gated by their timing in relation to individual heartbeats. Emotional and neutral faces were presented to human volunteers at cardiac systole, when ejection of blood from the heart causes arterial baroreceptors to signal centrally the strength and tim...

Individual differences in trait aggression modulate neural sensitivity to unpleasant stimuli: evidence from an ERP study

Using ERP measures, the present study investigated the neural mechanism of the interaction between trait aggression and neural sensitivity to unpleasant stimuli. Event-related potentials (ERPs) were recorded for pleasant and unpleasant stimuli when subjects were required to categorize the emotion of stimuli. The ERP result showed a significant interaction between aggression and emotion during 4...

Individual Fluoride Bioavailability in Saliva and Plaque