Forskning
Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

Correlation between single-trial visual evoked potentials and the blood oxygenation level dependent response in simultaneously recorded electroencephalography-functional magnetic resonance imaging

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

DOI

  1. Quantification of cerebral perfusion and cerebrovascular reserve using Turbo-QUASAR arterial spin labeling MRI

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Coil profile estimation strategies for parallel imaging with hyperpolarized 13 C MRI

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Gamma-aminobutyric acid edited echo-planar spectroscopic imaging (EPSI) with MEGA-sLASER at 7T

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. Comparison of prospective head motion correction with NMR field probes and an optical tracking system

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  5. Improved calculation of the equilibrium magnetization of arterial blood in arterial spin labeling

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Higher physiological vulnerability to hypoxic exposure with advancing age in the human brain

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Investigation of sumatriptan and ketorolac trometamol in the human experimental model of headache

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Effect of pituitary adenylate cyclase-activating polypeptide-27 on cerebral hemodynamics in healthy volunteers: A 3T MRI study

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Vis graf over relationer
To compare different electroencephalography (EEG)-based regressors and their ability to predict the simultaneously recorded blood oxygenation level dependent response during blocked visual stimulation, simultaneous EEG-functional magnetic resonance imaging in 10 healthy volunteers was performed. The performance of different single-trial EEG regressors was compared in terms of predicting the measured blood oxygenation level dependent response. The EEG-based regressors were the amplitude and latency of the primary positive (P1) and negative (N2) peaks of the visual evoked potential, the combined P1-N2 amplitude, and the alpha power. Apart from peak latencies, all regressors showed significant positive or negative correlation with the blood oxygenation level dependent response in visual cortex. In addition, several EEG-based regressors were found to predict blood oxygenation level dependent variations in different occipital and extraoccipital cortical areas not explained by the boxcar regressor. The results suggest that the P1-N2 regressor is the best EEG-based regressor to model the visual paradigm, but when looking for additional effects like habituation or attention modulation that cannot be modeled by the boxcar regressor, it is better to include regressors based on individual peaks or alpha power.
OriginalsprogEngelsk
TidsskriftMagnetic Resonance in Medicine
Vol/bind68
Udgave nummer1
Sider (fra-til)252-60
Antal sider9
ISSN0740-3194
DOI
StatusUdgivet - 2012

ID: 36832501