Autonomic nervous system activity associated with postural disturbances in patients with perilymphatic fistula: sympathetic or vagal origin?

The study focused on patients suffering from perilymphatic fistula (PLF), whether they had undergone surgery or not. Vestibular disturbances can be harmless but are associated with varying symptoms, demonstrating disorders within the autonomic nervous system (ANS). The aim was to test whether the orthosympathetic is involved as the vagal part is often suspected of eliciting a feeling of sickness.

Basic emotions induced by odorants: a new approach based on autonomic pattern results.

The aim of this study was to link the effects of odorants with the emotional process, through autonomic nervous system (ANS) responses. Taking Ekman's data and our previous results into account, we tried to verify a possible evocation by odorants of some basic emotions, i.e.

Odor hedonics: connection with emotional response estimated by autonomic parameters.

The aim of this paper is to analyse the relationship between self-report hedonic evaluations and the physiological expression of emotion in response to odorants. We try to solve the following questions: (1) Is it possible to find any experimental evidence that the sense of smell is linked with emotion? (2) What kind of odorants can be distinguished by autonomic analysis? (3) Is there a link between hedonics and autonomic information? The effects of odorants on the emotional process were estimated, in terms of autonomic nervous system (ANS) activity. Fifteen subjects inhaled five odorants as olfactory stimuli: lavender (LAV), ethyl acetoacetate (EAA), camphor (CAM), acetic acid (AA) and butyric acid (BA).

Influence of some biologically meaningful odorants on the vigilance states of the rat.

In freely moving rats, mitral cells multiunit activity and vigilance states (EEG and neck muscles EMG) were recorded during stimulations by some odorous stimuli known from previous experiments to elicit distinct emotional behaviors. An awaking influence may be pointed out; the greatest awaking influence is noted for the opposite most biologically meaningful stimuli: odor of fox (predator of the rat) and odor of grouped rats. Mitral cells responsiveness is not only modulated by the biological meaning of the olfactory stimulus but is also under the control of the arousal level of the animal; it decreases from wakefulness (W) to slow wave sleep (SWS).