Karsten
Specht
Professor
Visit Address:
Jonas Lies vei 91
5020 BERGEN
Postal Address:
Postboks 7807
5020 BERGEN
Phone:
+47 55 58 62 79
E-mail:
- Neuroimaging with functional magnetic resonance imaging (fMRI)
- Neuronal correlates of speech comprehension and speech production
- fMRI in persons who stutter
- Music perception and music processing
- Clinical fMRI, in particular in stroke patients
Journal articles
- 2015. Therapy-induced brain reorganization patterns in aphasia. Brain. 138: 1097-1112. doi: 10.1093/brain/awv022
- 2015. The neural correlates of sex differences in left-right confusion. NeuroImage. 113: 196-206. doi: 10.1016/j.neuroimage.2015.02.066
- 2015. Glutamate as a mediating transmitter for auditory hallucinations in schizophrenia: A 1H MRS study. Schizophrenia Research. 161: 252-260. doi: 10.1016/j.schres.2014.11.015
- 2015. On the existence of a generalized non-specific task-dependent network. Frontiers in Human Neuroscience. 9. Published 2015-08-06. doi: 10.3389/fnhum.2015.00430
- 2015. Default-mode network functional connectivity is closely related to metabolic activity. Human Brain Mapping. 36: 2027-2038. Published 2015-02-03. doi: 10.1002/hbm.22753
- 2014. Equity theory and fair inequality: A neuroeconomic study. Proceedings of the National Academy of Sciences of the United States of America. 111: 15368-15372. doi: 10.1073/pnas.1414602111
- 2014. Neuroanatomical precursors of dyslexia identified from pre-reading through to age 11. Brain. 137: 3136-3141. doi: 10.1093/brain/awu229
- 2014. Impact of glutamate levels on neuronal response and cognitive abilities in schizophrenia. NeuroImage: Clinical. 4: 576-584. doi: 10.1016/j.nicl.2014.03.014
- 2014. Resting states are resting traits - An fMRI study of sex differences and menstrual cycle effects in resting state cognitive control networks. PLoS ONE. 9. doi: 10.1371/journal.pone.0103492
- 2014. Children with dyslexia show cortical hyperactivation in response to increasing literacy processing demands. Frontiers in Psychology. 5. doi: 10.3389/fpsyg.2014.01491
- 2014. Default mode network alterations during language task performance in children with benign epilepsy with centrotemporal spikes (BECTS). Epilepsy & Behavior. 33: 12-17. doi: 10.1016/j.yebeh.2014.01.008
- 2014. The human amygdala encodes value and space during decision making. NeuroImage. 101: 712-719. doi: 10.1016/j.neuroimage.2014.07.055
- 2014. Post-adolescent developmental changes in cortical complexity. Behavioral and Brain Functions. 10. doi: 10.1186/1744-9081-10-44
- 2014. Neuronal basis of speech comprehension. Hearing Research. 307: 121-135. doi: 10.1016/j.heares.2013.09.011
- 2014. Functional asymmetry and effective connectivity of the auditory system during speech perception is modulated by the place of articulation of the consonant – A 7 T fMRI study. Frontiers in Psychology. doi: 10.3389/fpsyg.2014.00549
- 2013. Functional Parcellation of the Inferior Frontal and Midcingulate Cortices in a Flanker-Stop-Change Paradigm. Human Brain Mapping. 34: 1501-1514. doi: 10.1002/hbm.22002
- 2013. Case-based approach to evaluate the efficacy of working memory training in juvenile Multiple Sclerosis. Multiple Sclerosis. 19: 975-976. doi: 10.1177/1352458513490384
- 2013. Efficacy of working memory training in juvenile multiple sclerosis. Multiple Sclerosis. 19: 94-95.
- 2013. Mapping a lateralization gradient within the ventral stream for auditory speech perception. Frontiers in Human Neuroscience. 7. 10 pages. doi: 10.3389/fnhum.2013.00629
- 2013. Severe nigrostriatal degeneration without clinical parkinsonism in patients with polymerase gamma mutations. Brain. 136: 2393-2404. doi: 10.1093/brain/awt103
- 2012. Attention-deficit/hyperactivity disorder in childhood epilepsy: A neuropsychological and functional imaging study. Epilepsia. 53: 325-333. doi: 10.1111/j.1528-1167.2011.03377.x
- 2012. Resting-state glutamate level in the anterior cingulate predicts blood-oxygen level-dependent response to cognitive control. Proceedings of the National Academy of Sciences of the United States of America. 109: 5069-5073. doi: 10.1073/pnas.1115628109
- 2012. Language lateralization and cognitive control across the menstrual cycle assessed with a dichotic-listening paradigm. Psychoneuroendocrinology. 37: 1866-1875. doi: 10.1016/j.psyneuen.2012.03.021
- 2012. A forced-attention dichotic listening fMRI study on 113 subjects. Brain and Language. 121: 240-247. doi: 10.1016/j.bandl.2012.03.004
- 2012. Stimulus expectancy modulates inferior frontal gyrus and premotor cortex activity in auditory perception. Brain and Language. 121: 65-69. doi: 10.1016/j.bandl.2012.02.002
- 2012. Synaesthesia: cross activations, high interconnectivity, and a parietal hub. Translational Neuroscience. 3: 15-21. doi: 10.2478/s13380-012-0007-z
- 2012. The neural basis of synaesthesia. European Journal of Neurology. 19: 820-820.
- 2012. Cognitive conflict in a syllable identification task causes transient activation of speech perception area. Brain and Cognition. 78: 200-205. doi: 10.1016/j.bandc.2011.12.006
- 2011. Congenital prosopagnosia: multistage anatomical and functional deficits in face processing circuitry. Journal of Neurology. 258: 770-782. doi: 10.1007/s00415-010-5828-5
- 2011. Adults with attention-deficit/hyperactivity disorder - a brain magnetic resonance spectroscopy study. Frontiers in Psychiatry. 2. 8 pages. Published 2011-11-23. doi: 10.3389/fpsyt.2011.00065
- 2011. Attention and cognitive control networks assessed in a dichotic listening fMRI study. Brain and Cognition. 76: 276-285. doi: 10.1016/j.bandc.2011.02.006
- 2011. The neural correlate of colour distances revealed with competing synaesthetic and real colours. Cortex. 47: 320-331. doi: 10.1016/j.cortex.2009.09.004
- 2011. Increased activation in superior temporal gyri as a function of increment in phonetic features. Brain and Language. 116: 97-101. doi: 10.1016/j.bandl.2010.10.001
- 2011. Effective connectivity analysis demonstrates involvement of premotor cortex during speech perception. NeuroImage. 54: 2437-2445. doi: 10.1016/j.neuroimage.2010.09.078
- 2011. An independent component analysis of fMRI data of grapheme-colour synaesthesia. Journal of Neuropsychology. 5: 203-213. doi: 10.1111/j.1748-6653.2011.02008.x
- 2011. A critical re-examination of sexual dimorphism in the corpus callosum microstructure. NeuroImage. 56: 874-880. doi: 10.1016/j.neuroimage.2011.03.013
- 2011. Structural and Functional Reorganization of the Corpus Callosum between the Age of 6 and 8 Years. Cerebral Cortex. 21: 1012-1017. doi: 10.1093/cercor/bhq165
- 2010. The effects of background noise on dichotic listening to consonant-vowel syllables: An fMRI study. Laterality. 15: 577-596. doi: 10.1080/13576500903045082
- 2010. Structural and functional imaging approaches in attention deficit/hyperactivity disorder: Does the temporal lobe play a key role? Psychiatry Research : Neuroimaging. 183: 230-236. doi: 10.1016/j.pscychresns.2010.03.010
- 2010. Callosal tissue loss in multiple system atrophy-A one-year follow-up study. Movement Disorders. 25: 2613-2620. doi: 10.1002/mds.23318
- 2010. Cerebral diffusion and perfusion deficits in North Sea divers. Acta Radiologica. 51: 1050-1058. doi: 10.3109/02841851.2010.515245
- 2010. Effective connectivity analysis demonstrates involvement of premotor cortex during speech perception. NeuroImage. 54: 2437-2445. doi: 10.1016/j.neuroimage.2010.09.078
- 2010. The neural basis of updating: Distinguishing substitution processes from other concurrent processes. Scandinavian Journal of Psychology. 51: 357-362. doi: 10.1111/j.1467-9450.2010.00817.x
- 2010. Future Developments for Non-destructive 3D Plant and Root Imaging. In vitro Cellular & Developmental Biology-Animal. 46: S172-S172.
- 2010. Future Developments for Non-Destructive 3D Plant and Root Imaging. Journal of Biotechnology. 150: S567-S567. doi: 10.1016/j.jbiotec.2010.10.039
- 2010. A 1H-MR spectroscopy study of changes in glutamate and glutamine (Glx) concentrations in frontal spectra after administration of memantine. Cerebral Cortex. 20: 798-803. doi: 10.1093/cercor/bhp145
- 2010. Identification of attention and cognitive control networks in a parametric auditory fMRI study. Neuropsychologia. 48: 2075-2081. doi: 10.1016/j.neuropsychologia.2010.03.028
- 2009. Evidence of a modality-dependent role of the cerebellum in working memory? An fMRI study comparing verbal and abstract n-back tasks. NeuroImage. 47: 2073-2082. doi: 10.1016/j.neuroimage.2009.06.005
- 2009. Effects of methylphenidate on working memory functioning in children with attention deficit/hyperactivity disorder. European journal of paediatric neurology. 13: 516-523. doi: 10.1016/j.ejpn.2008.10.008
- 2009. In vivo voxel-based relaxometry in amyotrophic lateral sclerosis. Journal of Neurology. 256: 28-34. doi: 10.1007/s00415-009-0947-6
- 2009. Realignment parameter-informed artefact correction for simultaneous EEG–fMRI recordings. NeuroImage. 45: 1144-1150. doi: 10.1016/j.neuroimage.2009.01.024
- 2009. Sex differences and the impact of steroid hormones on the developing human brain. Cerebral Cortex. 19: 464-473. doi: 10.1093/cercor/bhn100
- 2009. Brain activation on pre-reading tasks reveals at-risk status for dyslexia in 6-year-old children. Scandinavian Journal of Psychology. 50: 79-91. doi: 10.1111/j.1467-9450.2008.00688.x
- 2009. Disentangling the prefrontal network for rule selection by means of a non-verbal variant of the Wisconsin Card Sorting Test. Human Brain Mapping. 30: 1734-1743. doi: 10.1002/hbm.20637
- 2009. Detection of differential speech-specific processes in the temporal lobe using fMRI and a dynamic "sound morphing" technique. Human Brain Mapping. 30: 3436-3444. doi: 10.1002/hbm.20768
- 2009. Joint Independent Component Analysis of structural and functional images reveals complex patterns of functional reorganisation in stroke aphasia. NeuroImage. 47: 2057-2063. doi: 10.1016/j.neuroimage.2009.06.011
- 2009. Cognitive conflict and inhibition in primed dichotic listening. Brain and Cognition. 71: 20-25. doi: 10.1016/j.bandc.2009.03.006
- 2009. The effects of the glutamate antagonist memantine on brain activation to an auditory perception task. Human Brain Mapping. 30: 3616-3624. doi: 10.1002/hbm.20789
- 2009. Evidence for glutamatergic neurotransmission in cognitive control in an auditory attention task. Neuroscience Letters. 454: 171-175. doi: 10.1016/j.neulet.2009.03.043
- 2009. DYNAMIC MODULATION OF BRAIN ACTIVATION IN RESPONSE TO VARYING DEGREES OF TOP-DOWN/BOTTOM-UP PROCESSING CONFLICT. Psychophysiology. 46: S120-S120.
- 2009. Functional relevance of inter-individual differences in temporal lobe callosal pathways: A DTI tractography study. Cerebral Cortex. 19: 1322-1329. doi: 10.1093/cercor/bhn173
- 2009. A longitudinal study of inter-hemispheric interaction and corpus callosum development in 6 and 8 year old children. NeuroImage. 47: 151.
- 2008. The effects of background noise on dichotic listening to consonant-vowel syllables. Brain and Language. 107: 11-15. doi: 10.1016/j.bandl.2008.06.001
- 2008. Unmixing concurrent EEG-fMRI with parallel independent component analysis. International Journal of Psychophysiology. 67: 222-234. doi: 10.1016/j.ijpsycho.2007.04.010
- 2008. Prediction of human errors by maladaptive changes in event-related brain networks. Proceedings of the National Academy of Sciences of the United States of America. 105: 6173-6178. Published 2008-04-22. doi: 10.1073/pnas.0708965105
- 2008. Hjerneaktivering som predikerer feilhandlinger. Nevropsykologi : Medlemsblad for Norsk Nevropsykologisk Forening. 1.
- 2008. The effects of alcohol intoxication on neuronal activation at different levels of cognitive load. The Open Neuroimaging Journal. 2: 65-72.
- 2008. Separating the effects of alcohol and expectancy on brain activation: An fMRI working memory study. NeuroImage. 42: 1587-1596. doi: 10.1016/j.neuroimage.2008.05.037
- 2008. Funksjonell magnetresonansavbildning (fMRI) av hjernen prinsipper og klinisk anvendelse. Tidsskrift for Norsk Psykologforening. 45: 1089-1097.
- 2008. Auditory hallucinations in schizophrenia: the role of cognitive, brain structural and genetic disturbances in the left temporal lobe. Frontiers in Human Neuroscience. 1. 10 pages. Published 2008-03-28. doi: 10.3389/neuro.09.006.2007
- 2008. Spatiotemporal group ICA applied to fMRI datasets. IEEE Engineering in Medicine and Biology Society. Conference Proceedings. 1: 4652-4655.
- 2008. An fMRI study of phonological and spatial working memory using identical stimuli. Scandinavian Journal of Psychology. 49: 393-401. doi: 10.1111/j.1467-9450.2008.00672.x
- 2008. Grey and white matter loss along cerebral midline structures in myotonic dystrophy type 2. Journal of Neurology. 255: 1904-1909. doi: 10.1007/s00415-008-0997-1
- 2008. Fractal dimension analysis of MR images reveals grey matter structure irregularities in schizophrenia. Computerized Medical Imaging and Graphics. 32: 150-158. doi: 10.1016/j.compmedimag.2007.10.005
- 2008. Sex-differences in grey-white matter structure in normal-reading and dyslexic adolescents. Neuroscience Letters. 438: 80-84. doi: 10.1016/j.neulet.2008.04.022
- 2008. The effects of different intensity levels of background noise on dichotic listening to consonant-vowel syllables. Scandinavian Journal of Psychology. 49: 305-310. doi: 10.1111/j.1467-9450.2008.00664.x
- 2008. Tracing the ventral stream for auditory speech processing in the temporal lobe by using a combined time series and independent component analysis. Neuroscience Letters. 442: 180-185. doi: 10.1016/j.neulet.2008.06.084
- 2008. A new verbal reports fMRI dichotic listening paradigm for studies of hemispheric asymmetry. NeuroImage. 40: 902-911. doi: 10.1016/j.neuroimage.2007.11.051
- 2007. Sporadic adult onset ataxia of unknown etiology : A clinical, electrophysiological and imaging study. Journal of Neurology. 254: 1384-1389. doi: 10.1007/s00415-007-0556-1
- 2007. Increased parietal and frontal activation after remission from recurrent major depression: A repeated fMRI study. Cognitive Therapy and Research. 31: 147-160. doi: 10.1007/s10608-006-9116-8
- 2007. Voxel-based morphometry and voxel-based relaxometry in multiple system atrophy-a comparison between clinical subtypes and correlations with clinical parameters. NeuroImage. 36: 1086-1095. doi: 10.1016/j.neuroimage.2007.04.028
- 2007. Hemispheric asymmetries in the processing of temporal acoustic cues in consonant-vowel syllables. Restorative Neurology and Neuroscience. 25: 227-240.
- 2006. Does background noise affect hemisphere asymmetry for speech processing? Psychophysiology. 43: 35-35.
- 2006. Single-trial ERP-FMRI: The electric and hemodynamic correlates of expectancy in target processing. International Journal of Psychophysiology. 61: 323-324.
- 2006. Approaches to single-trial ERP-fMRI integration. Journal of Psychophysiology. 20: 106-106.
- 2006. Mr morphometry analysis of grey matter volume reduction in schizophrenia: association with hallucinations. International Journal of Neuroscience. 116: 9-23. doi: 10.1080/00207450690962244
- 2006. Controlling for individual differences in fMRI brain activation to tones, syllables, and words. NeuroImage. 30: 554-562. doi: Se sammendrag
- 2005. Assessing the spatiotemporal evolution of neuronal activation with single-trial event-related potentials and functional MRI. Proceedings of the National Academy of Sciences of the United States of America. 102: 17798-17803.
- 2005. Processing of sub-syllabic speech units in the posterior temporal lobe: An fMRI study. NeuroImage. 26: 1059-1067.
- 2005. Voxel-based analysis of multiple-system atrophy of cerebellar type: complementary results by combining voxel-based morphometry and voxel-based relaxometry. NeuroImage. 25: 287-293.
- 2005. "Soundmorphing": A new approach to studying speech perception in humans. Neuroscience Letters. 384: 60-65.
- 2005. Spatial attention: more than intrinsic alerting? Experimental Brain Research.
- 2005. Processing of conflicting cues in an attention-shift paradigm studied with fMRI. Neuroscience Letters. 380: 138-142. doi: 10.1016/j.neulet.2005.01.026
- 2005. Mapping of temporal and parietal cortex in progressive nonfluent aphasia and Alzheimer’s disease using chemical shift imaging, voxel-based morphometry and positron emission tomography. Psychiatry Research : Neuroimaging. 140: 115-131.
- 2004. Plug & play fMRI. Rivista di neuroradiologia. 16: 965-968.
- 2004. Brain localization of attentional control in different age groups by combining functional and structural MRI. NeuroImage. 22: 912-919.
- 2003. Focused attention in a simple dichotic listening task: an fMRI experiment. Cognitive Brain Research. 16: 257-266.
Reports and theses
- 2015. Equity theory and fair inequality: a neuroeconomic study. NHH Dept. of Economics Discussion papers. 19. Institutt for samfunnsøkonomi, NHH. 29 pages.
Book sections
- 2005. Funksjonell magnetresonansavbildning (fMRI) av hjernen ved psykotiske lidelser. Kap 10, pages 173-191. In:
- 2005. Schizofreni.
More information in national current research information system (CRIStin)
- PhD in Neuroscience
- Habilitation in General Psychology/Cognitive Neuroscience
Fields of competence
Research groups
Current projects
- When a sound becomes speech (BFS grant)
- It's time for some music (NRF grant)