Academic literature on the topic 'Čichové schopnosti'

Exceptional ability to smell dog in human activity are used for several centuries. The dog is trained for tracking , searching for drugs , weapons, ammunition , human remains , tobacco and money . Usability dog is recorded in the health sector , where the dog can identify the smell serious illness. Deploying a dog to search for forest pests , especially bark beetle was experimentally tested in several European countries , but they were always used the associated odors from the environment beetle . The aim of this thesis was to design and test the methodology in practice dog is trained to search the bark in the forest and to develop and test methodology for deploying the dog directly in the forest , provided that the dog will only identify the smell of bark Beatles. The training methodology and deployment methodology dog in practice aimed to demonstrate the dog's ability to identify the presence of bark beetle in the forest and bring cost-effective form of prevention inspections forest cover within the meaning of applicable legislation. The long-term verification specially trained dog was clearly proved that the dog is very well and quickly able to identify the bark in the forest , which is most at risk. At the same time training the dog to find the bark creating an efficient instrument for the implementation of preventive examinations of forests against bark beetle infestation in accordance with applicable legislation

Research suggests that olfactory perception of patients with schizophrenia differs from healthy people. In the context of previously conducted research, the present thesis addresses the differences in the abilities of identification and discrimination of odours and assessment of perceived odour qualities (pleasantness, familiarity, intensity, edibility) between patients with schizophrenia or acute and transient psychotic disorders and healthy volunteers, taking into account gender differences; in addition, the differences in the relationship between identification of odours and evaluation of the perceived qualities of odours between patients and healthy persons were explored as well as relationship between the severity of negative symptoms and olfactory perception. In line with other studies, deficits were found in patients in identification and discrimination of odours and in the assessment of odour familiarity compared to healthy subjects, with no gender differences. There were no differences in the relationship between the identification of odours and assessment of the perceived qualities of odours between patients and volunteers, and association of olfactory abilities and the assessment of perceived qualities of odours with the severity of negative symptoms was found only for identification of...

A great degree of interindividual variability has been established in measures of psychophysical olfactory performance and odor awareness in both children and adults. Previous studies have suggested the possibility that one of the factors that might contribute to this variability might be the degree of odor exposure in everyday contexts. In the present study, we hypothesized that children exposed to a greater variety of odors on a more frequent basis would exhibit higher odor identification and odor awareness scores. We have found an effect of odor exposure on the children's olfactory knowledge as reflected in their reports of olfactory behavior, but not olfactory abilities. In so doing, we replicated some of the previous findings in the literature of female over male advantage in the olfactory domain. Namely, we report that girls showed a more profound understanding of their olfactory environment and a greater degree of olfaction-oriented behavior, which was not accounted for by a gender difference in verbal fluency. Nevertheless, girls did not outperform boys on either of the measures of olfactory performance. Semi-longitudinal and longitudinal studies in verbally proficient children, employing both self- and parental reports of children's odor exposure and repeated olfactory testing, might...

The main body of the thesis deals with selected factors underlying the considerable variability in human olfactory abilities and some odour awareness-related measures, addressed in samples ranging in age from middle childhood to young adulthood. The thesis consists of two parts. The first part (Chapter 1), first presents the major advances and developments that brought about something of a renaissance of scientific interest in the human sense of smell, including the recent proliferation of psychophysical studies, both basic research and clinical. Next, an outline of olfactory psychophysical measures and related olfactory abilities that are of relevance to the studies presented in this thesis is provided. Subsequently, the selected factors contributing to interindividual differences in olfactory abilities, that have been addressed by this thesis, are reviewed, namely the effect of sex (or gender), which is approached from a developmental perspective, childhood gender nonconformity, and personality. Finally, intraindividual fluctuations in olfactory performance are also mentioned in brief. Next, the focus shifts to odour awareness by first introducing the various approaches that can be adopted to get closer to the real-life context as opposed to laboratory setting (where most olfactory studies continue to be...

Olfaction plays an important role in human mate selection or in ratings of sexual attractiveness of potential mates. Many studies suggest that olfaction is associated with human sexuality and arousal as well, especially in women, for whom the perception of odors is an important aspect not only in mate selection, but also in sexual context. There are steroids called 16-androstenes, which have an unique importance in this issue. These steroids, produced by the apocrine glands, are compounds of human body odor. The aim of the empirical part of this thesis is to research the associations between olfactory abilities and sexual function in women, especially with particular focus on the association of olfactory sensitivity (particularly to androstadienone as well as in general), orgasmicity and arousal, which are two major domains of sexual function. Participants were 90 heterosexual and coupled female students aged 21-30. All participants were tested during the follicular phase of their menstrual cycle. The Sniffin Sticks olfactory test was employed to assess the general olfactory functions. Among others, olfactory sensitivity to androstadienone was measured, as well as the perceived intensity and hedonicity of androstenone, androstenol and andostadienone. Participants filled out set of questionnaires...