Sökning: "temporal lobe"

Visar resultat 16 - 20 av 71 avhandlingar innehållade orden temporal lobe.

  1. 16. Mild cognitive impairment neuroimaging markers for early diagnosis of dementia

    Författare :Chaorui Huang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : This thesis concerns the investigation of mild cognitive impairment (MCI) and Alzheimer's disease (AD) using single photon emission computed tomography (SPECT) and quantitative electroencepholography (qEEG). In study I, The qEEG values were cross-sectionally compared between AD, MCI and controls. LÄS MER

  3. 17. Tracking selective attention in a musical cocktail

    Författare :Cassia Low Manting; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The cocktail party effect refers to mankind’s ability to focus attention on a single sound within noisy or complex auditory environments, in order to extract the most behaviourally-relevant information present. To investigate this cognitive phenomenon in a precise manner, we used frequency-tagging to separate neural auditory steady-state responses (ASSRs), which are specific to the driving frequency of each auditory source, from a neural mix elicited by multiple simultaneous stimuli. LÄS MER

  4. 18. Radiological Studies on Hippocampal Development : Morphological Variants and their Relationship to Epilepsy

    Författare :Dragan Bajic; Raili Raininko; Kai Ericson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MRI; Brain development; Hippocampus; Epilepsy; Radiology; Radiologi; Radiologi; Radiology;

    Sammanfattning : During fetal development, the hippocampal structures are folded forming the hippocampal sulcus which penetrates into the temporal lobe and then the entity rotates.  During this process, the hippocampal sulcus will be closed and the inverted hippocampus takes a rounded form. LÄS MER

  5. 19. MRI and SPECT neuroimaging in mild cognitive impairment and Alzheimer's disease

    Författare :Per Julin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : This thesis concerns measurements of regional brain volumes using Magnetic Resonance Imaging (MRI) and of regional cerebral blood flow (CBF) using Single Photon Emission Computed Tomography (SPECT) in patients investigated for suspected dementia. In the first study (I), visually rated MRI-, SPECT and EEG-pathology were compared between patients with Alzheimer's disease (AD) and patients with Frontal Lobe Dementia (FLD). LÄS MER

  7. 20. Neural correlates of irrelevant speech

    Författare :Jens Gisselgård; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The irrelevant speech effect refers to a reduction in the immediate serial recall of lists of presented items when irrelevant auditory material is presented together with the items to be memorized. The ability to ignore irrelevant distractors is vital in increasingly demanding work environments and the capability to keep information in and out of mind is central in human information processing. LÄS MER