Sökning: "odor detection"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden odor detection.

  1. 1. Olfactory Function : The Influence of Demographic, Cognitive, and Genetic Factors

    Författare :Margareta Hedner; Maria Larsson; Lars-Göran Nilsson; Claire Murphy; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Olfaction; odor identification; odor threshold; odor discrimination; aging; gender; ApoE; BDNF; val66met; association study; population-based; Psychology; psykologi;

    Sammanfattning : Olfactory function is affected by demographic, cognitive, and genetic factors. In the present thesis, three empirical studies investigated individual differences in olfactory ability. Study I explored demographic and cognitive correlates in common olfactory tasks; odor detection, odor discrimination, and odor identification. LÄS MER

  3. 2. Air pollution and dementia in a low exposure setting : the role of noise, olfaction, and theapoe gene

    Författare :John Andersson; Maria Nordin; Anna Oudin; Anna Sundström; Tom Russ; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Air pollution; Road traffic; NOx; dementia; APOE; Alzheimer’s disease; Apolipoprotein E; olfaction; particulate matter; vascular dementia; odor identification; odor detection; Psychology; psykologi;

    Sammanfattning : Previous research indicates an association between air pollution exposure, and risk of dementia. Still, a number of factors that may play a role in this association remain to be explored. LÄS MER

  4. 3. The Role of Odor and Sensory Irritation in Human Chemical Sensitivity

    Författare :Li Zheng; Birgitta Berglund; Staffan Hygge; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Odor and irritation detection; recognition; threshold; choice theory; intensity; chemical sensitivity; threshold; and sensitivity index.; Psychology; Psykologi; Psychology; psykologi;

    Sammanfattning : The main objective of this thesis is to apply complimentary psychophysical theories and methods to investigate human perception of odor and sensory irritation of chemical compounds present in indoor air. Three psychophysical theories: Signal Detection Theory (SDT), Threshold Theory and Luce’s Choice Theory (CT) were applied to measure detection and recognition of odor and sensory irritation of two odorous irritants (pyridine and formaldehyde) by using the method of constant stimuli. LÄS MER

  5. 4. Odor perception in three Coleoptera: molecule, receptor & neuron

    Författare :Jonas Bengtsson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In this thesis, the sense of olfaction and its links to behavior was studied in the cetoniid chafers Pachnoda interrupta and P. marginata, and the bark beetle Ips typographus. P. interrupta is a pest on sorghum in Ethiopia, and I. LÄS MER

  7. 5. Olfaction and prejudice : The role of body odor disgust sensitivity and disease avoidance in understanding social attitudes

    Författare :Marta Zakrzewska; Jonas K. Olofsson; Liuzza Marco Tullio; Sandra Soares; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; olfaction; disease avoidance; prejudice; body odors; disgust sensitivity; psykologi; Psychology;

    Sammanfattning : Disease avoidance is one of the main roles of olfaction. In particular, body odors are universal elicitors of disgust, a core emotion that plays a key role in disease avoidance. The disease avoidance theoretical framework emphasizes psychological mechanisms – attitudes and behaviors – aiming to recognize and evade pathogen threats. LÄS MER