Sökning: "event-related potentials"

Visar resultat 1 - 5 av 24 uppsatser innehållade orden event-related potentials.

  1. 1. ERP and MEG Correlates of Visual Consciousness : An Update

    Magister-uppsats, Högskolan i Skövde/Institutionen för biovetenskap

    Författare :Jona Förster; [2019]
    Nyckelord :Neural correlates of consciousness; Event-related potentials; Event-related fields; Visual awareness negativity; Late positivity; Global Neuronal Workspace theory; Recurrent Processing theory;

    Sammanfattning : Two decades of event-related potential (ERP) research have established that the most consistent correlates of the onset of visual consciousness are the early visual awareness negativity (VAN), a negative component in the N2 time range over posterior electrode sites, and the late positivity (LP), a positive component in the P3 time range over fronto-parietal electrode sites. A review by Koivisto & Revonsuo (2010) had looked at 39 studies and concluded that the VAN is the earliest and most reliable correlate of visual phenomenal consciousness, whereas the LP probably reflects later processes associated with reflective/access consciousness. LÄS MER

  2. 2. Evaluation of cognitive workload using EEG : Investigation of how sensory feedback improves function of osseo-neuromuscular upper limb prostheses

    Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

    Författare :Linn Berntsson; [2019]
    Nyckelord :EEG; ERP; spectral analysis; cognitive workload; prosthesis;

    Sammanfattning : The e-OPRA Implant System (Integrum AB, Sweden) is a system which employs permanently accessible implantable neuromuscular electrodes in combination with osseointegrated attachment of the prosthesis to the skeleton, in order to create a more natural control of advanced robotic upper-limb prostheses. The system enables the possibility of sensory feedback, via a cuff electrode to the ulnar nerve which allows for direct neurostimulation of the nerve. LÄS MER

  3. 3. Visual Perception of the Facial Width-to-Height Ratio : Possible Influences of Angry Facial Expressions as Revealed by Event-Related Brain Potentials

    Magister-uppsats, Högskolan i Skövde/Institutionen för biovetenskap

    Författare :Madeleine Jones; [2019]
    Nyckelord :Facial Width-to-Height Ratio; Late Positive Potential; Facial Processing; Anger; Cognitive Neuroscience;

    Sammanfattning : The facial width-to-height ratio (fWHR) is a measure of the cheekbone width divided by the height of the face from the upper lip to the brows. The metric is hypothesised to have evolved as an intra-sexual competition mechanism in males, where large fWHRs are thought to signal both threat and aggression. LÄS MER

  4. 4. Holistic and combinatorial processing of Swedish tone accents in the brain: An MMN study

    Master-uppsats, Lunds universitet/Allmän språkvetenskap; Lunds universitet/Masterprogram: Språk och språkvetenskap

    Författare :Renata Kochancikaite; [2019]
    Nyckelord :tone accents; Swedish; phonology; morphology; accent 1; accent 2; neurolinguistics; EEG; event-related potentials; MMN; mismatch negativity; Languages and Literatures;

    Sammanfattning : All words in Swedish have a particular melody. There are two tonal patterns that are observed in different prosodic and morphological contexts – accent 1 and accent 2. The tone of accent 1 is the default melody in Swedish and is said to be of intonational nature. LÄS MER

  5. 5. Neuronal activity to environmental sounds when presented together with semantically related words : An MMN study on monolingual and bilingual processing of homophones

    Kandidat-uppsats, Stockholms universitet/Avdelningen för allmän språkvetenskap

    Författare :Yeliz Afyonoglu Kirbas; [2019]
    Nyckelord :Environmental sounds; interlingual homophones; mismatch negativity; event-related potentials; Miljöljud; interlingual-homofoner; mismatch negativity; event-relaterade potentialer;

    Sammanfattning : Neuronal activity of monolingual and bilinguals to environmental sounds and words that are semantically related to them were studied using the mismatch negativity (MMN) component of event-related potentials. MMN was expected to reflect the language selection process in bilinguals on the bases of semantics and phonology. LÄS MER