Blar i forfatter "Hugdahl, Kenneth"

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    • Children with dyslexia show cortical hyperactivation in response to increasing literacy processing demands 

      Morken, Frøydis; Helland, Turid; Hugdahl, Kenneth; Specht, Karsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Combined fMRI region- and network-analysis reveal new insights of top-down modulation of bottom-up processes in auditory laterality 

      Kazimierczak, Katarzyna; Craven, Alexander R.; Ersland, Lars; Specht, Karsten; Dumitru, Magda L.; Sandøy, Lydia B.; Hugdahl, Kenneth (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-18)
      Dichotic listening along with the right-ear advantage (REA) has been a standard method of investigating auditory laterality ever since it was first introduced into neuropsychology in the early 1960s. Beginning in the 1980s, authors reported that it was possible to modulate the bottom-up driven perceptual REA by instructing subjects to selectively attend to and report only from the right or left ...

    • Dynamic up- and down-regulation of the default (DMN) and extrinsic (EMN) mode networks during alternating task-on and task-off periods 

      Hugdahl, Kenneth; Kazimierczak, Katarzyna Anna; Beresniewicz, Justyna; Kompus, Kristiina; Westerhausen, René; Ersland, Lars; Grüner, Renate; Specht, Karsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-19)
      Using fMRI, Hugdahl et al. (2015) reported the existence of a general-domain cortical network during active task-processing which was non-specific to the cognitive task being processed. They labelled this network the extrinsic mode network (EMN). The EMN would be predicted to be negatively, or anti-correlated with the classic default mode network (DMN), typically observed during periods of rest, ...

    • A multimodal study of the effects of tDCS on dorsolateral prefrontal and temporo-parietal areas during dichotic listening 

      Marquardt, Lynn Anne; Kusztrits, Isabella; Craven, Alexander R.; Hugdahl, Kenneth; Specht, Karsten; Hirnstein, Marco (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-03)
      The underlying neural mechanisms of transcranial direct current stimulation (tDCS), especially beyond the primary motor cortex, remain unclear. Several studies examined tDCS effects on either functional activity, neurotransmitters or behavior but few investigated those aspects together to reveal how the brain responds to tDCS. The objective is to elucidate the underlying mechanisms of tDCS using a ...

    • Sex- and sex hormone-related variations in energy-metabolic frontal brain asymmetries: A magnetic resonance spectroscopy study 

      Hjelmervik, Helene; Hausmann, Markus; Craven, Alexander R.; Hirnstein, Marco; Hugdahl, Kenneth; Specht, Karsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-31)
      Creatine is a key regulator of brain energy homeostasis, and well-balanced creatine metabolism is central in healthy brain functioning. Still, the variability of brain creatine metabolism is largely unattended in magnetic resonance spectroscopy (MRS) research. In the human brain, marginal sex differences in creatine levels have been found in the prefrontal cortex. It is however not known to ...