Kenneth Hugdahl

This study uses fixel-based analysis to find reduced frontal fibre density in male first-episode psychosis patients compared to controls, with no significant differences in females.

The paper investigates GABA and Glutamate dynamics along with BOLD signals in psychosis patients with hallucinations during a cognitive task, finding baseline Glx differences and altered BOLD-Glx associations.

This paper develops a model to reduce unwanted variance in GABA-edited MRS data while preserving functional dynamics, showing improved SNR and reduced variability in GABA+ estimates.

This study investigates how linewidth and SNR affect GABA+ concentration estimates from MRS data using six modelling algorithms, finding significant associations with Lorentzian linewidth.

This paper demonstrates a method to concurrently measure BOLD and metabolite changes during a cognitive task using fMRS, showing significant Glx increases and moderate BOLD correlation.

The paper compares seven algorithms for modelling GABA-edited 1H-MRS data from 222 subjects across 20 sites, finding moderate agreement and highlighting the need for standardized parameters.

This study challenges the traditional view of the default mode network (DMN) as solely task-negative by showing its involvement in low-effort cognitive processing and intermittent interactions with the extrinsic mode network (EMN).

The paper examines how brain networks shift between intrinsic and extrinsic modes during rest and active processing using fMRI data from visual tasks.

This study uses diffusion tensor imaging and machine learning to predict brain age in schizophrenia and bipolar disorder patients, finding age overestimation in both groups compared to controls.

This study examines listening difficulties in children using dichotic listening tests and fMRI, finding that children with LiD are more influenced by acoustic cues than attention.

The paper shows that neural activity in the ventro-medial frontal cortex precedes conscious awareness of entering or exiting a transient hallucinatory state.

This study finds a positive correlation between arcuate fasciculus tract length and severity of auditory hallucinations in schizophrenia patients using DTI tractography.

The paper examines how the default mode network (DMN) and extrinsic mode network (EMN) dynamically change during task-on and task-off periods using fMRI data.