Sökning: "Affective"

Visar resultat 21 - 25 av 391 avhandlingar innehållade ordet Affective.

  1. 21. Machine learning for identification of brain activity patterns with applications in gentle touch processing

    Författare :Malin Björnsdotter Åberg; Göteborgs universitet; []
    Nyckelord :Somatosensory; Machine learning; Pattern recognition; fMRI; Support vector machines; Neuroscience; Brain; BOLD; Signal processing; Artificial intelligence; Touch; Human; Unmyelinated; Sensory; Affective;

    Sammanfattning : Since the first mention of artificial intelligence in the 1950s, the field of machine learning has provided increasingly appealing tools for recognition of otherwise unintelligible pattern representations in complex data structures. Human brain activity, acquired using functional magnetic resonance imaging (fMRI), is a prime example of such complex data where the utility of pattern recognition has been demonstrated in a wide range of studies recently (Haynes et al. LÄS MER

  3. 22. Processing Asymmetries of Emotionally Valenced Stimuli

    Författare :Mats Dahl; Institutionen för psykologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Psychology; recollective experience; remember-know; memory; encoding; processing asymmetries; emotional words; emotional faces; affective pictures; emotion; affective information; Psykologi;

    Sammanfattning : The central phenomenon investigated concerns the valence-based process asymmetry found in several earlier studies (e.g. Pratto & John, 1991; Taylor, 1991), where negative stimuli seem to initiate more thorough processing than positive stimuli. This finding was consistent in the three empirical studies forming this dissertation. LÄS MER

  4. 23. Age differences in arousal, perception of affective pictures, and emotional memory enhancement : Appraisal, Electrodermal activity, and Imaging data

    Författare :Joachim Gavazzeni; Håkan Fischer; Richard J. Davidson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Aging; Affective function; subjective ratings; SCRs; FMRI; Pictures; Emotional memory enhancement; Bottom-up and Top-down processing; Psychology; Psykologi; psykologi; Psychology;

    Sammanfattning : In contrast to effortful cognitive functions, emotional functioning may remain stable or even be enhanced in older adults. It is unclear how affective functions in aging correspond to subjective experiences and physiological changes. LÄS MER

  5. 24. Life-charting patients with treatment-refractory affective disorder

    Författare :Anna Ehnvall; Göteborgs universitet; []
    Nyckelord :Life charting; treatment-refractory affective disorder; sensitisation; ; CRH challenge test; ACTH; MHPG; perception of parental rearing;

    Sammanfattning : Introduction:In treatment-refractory affective illness there are several hypothesis to suggest alterations in the neurobiological systems in relation to illness course. The underlying mechanisms have been scantily investigated. LÄS MER

  7. 25. Affective touch throughout life: from cortical processing in infancy to touch perception in adulthood

    Författare :Emma H. Jönsson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Affective touch; Touch perception; Cortical activation; C-tactile afferents;

    Sammanfattning : Affective, interpersonal touch is important for forming and maintaining social bonds. In the hairy skin of humans there is a specific type of nerve fibers called C-tactile (CT) afferents which are optimally activated by a light stroking of the skin, like a caress. LÄS MER