Search Results - "KÄHKÖNEN, Seppo"

Central auditory dysfunction in schizophrenia as revealed by the mismatch negativity (MMN) and its magnetic equivalent MMNm: a review by NAeAetAenen, Risto, KAehkOenen, Seppo

“…Since the early 1990s, the auditory change-detection response, mismatch negativity (MMN) and its magnetoencephalographic (MEG) equivalent MMNm have been…”
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How Human Electrophysiology Informs Psychopharmacology: from Bottom-up Driven Processing to Top-Down Control by Kenemans, J Leon, Kähkönen, Seppo

“…This review surveys human event-related brain potential (ERP) and event-related magnetic field (ERF) approaches to psychopharmacology and psychopathology, and…”
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Reproducibility of TMS-Evoked EEG responses by Lioumis, Pantelis, Kičić, Dubravko, Savolainen, Petri, Mäkelä, Jyrki P., Kähkönen, Seppo

“…Navigated transcranial magnetic stimulation combined with electroencephalography (nTMS‐EEG), allows noninvasive studies of cortical excitability and…”
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Biperiden selectively induces memory impairment in healthy volunteers: no interaction with citalopram by Sambeth, Anke, Riedel, Wim J., Klinkenberg, Inge, Kähkönen, Seppo, Blokland, Arjan

“…Rationale Traditionally, the non-selective muscarinic antagonist scopolamine has been used to induce episodic memory impairments as found in Alzheimer’s…”
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The effect of stimulus intensity on brain responses evoked by transcranial magnetic stimulation by Komssi, Soile, Kähkönen, Seppo, Ilmoniemi, Risto J.

“…To better understand the neuronal effects of transcranial magnetic stimulation (TMS), we studied how the TMS‐evoked brain responses depend on stimulation…”
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Impaired functional connectivity at EEG alpha and theta frequency bands in major depression by Fingelkurts, Andrew A., Fingelkurts, Alexander A., Rytsälä, Heikki, Suominen, Kirsi, Isometsä, Erkki, Kähkönen, Seppo

“…Recent reports on functional brain imaging in major depression have lead to an assumption that observed psychopathology might be related to an altered brain…”
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Effects of alcohol on TMS-evoked N100 responses by Kähkönen, Seppo, Wilenius, Juha

“…TMS combined with simultaneous EEG is a novel brain imaging tool allowing investigation local excitability of human cortex. As alcohol acts through increasing…”
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Transcranial magnetic stimulation-electroencephalography responses in recovered and symptomatic mild traumatic brain injury by Tallus, Jussi, Lioumis, Pantelis, Hämäläinen, Heikki, Kähkönen, Seppo, Tenovuo, Olli

“…Mild traumatic brain injury (mTBI) may cause diffuse damage to the brain, especially to the frontal areas, that may lead to persistent symptoms. We studied…”
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Validation of head movement correction and spatiotemporal signal space separation in magnetoencephalography by Nenonen, Jukka, Nurminen, Jussi, Kičić, Dubravko, Bikmullina, Rozaliya, Lioumis, Pantelis, Jousmäki, Veikko, Taulu, Samu, Parkkonen, Lauri, Putaala, Miikka, Kähkönen, Seppo

“…Highlights ► We evaluated novel methods for artifact suppression and movement correction in MEG data recorded in 20 subjects with controlled magnetic artifacts…”
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The effect of methylphenidate on auditory information processing in healthy volunteers: a combined EEG/MEG study by Korostenskaja, Milena, Kičić, Dubravko, Kähkönen, Seppo

“…Introduction The psychomotor stimulant methylphenidate (MPH) has been shown to improve attentional processes, reflected in behavioural measures such as…”
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The novelty value of the combined use of electroencephalography and transcranial magnetic stimulation for neuroscience research by Komssi, Soile, Kähkönen, Seppo

“…Electroencephalographic (EEG) responses measured simultaneously with transcranial magnetic stimulation (TMS) have opened a new window into the human nervous…”
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Breakdown of Long-Range Temporal Correlations in Theta Oscillations in Patients with Major Depressive Disorder by Linkenkaer-Hansen, Klaus, Monto, Simo, Rytsala, Heikki, Suominen, Kirsi, Isometsa, Erkki, Kahkonen, Seppo

“…Neuroimaging has revealed robust large-scale patterns of high neuronal activity in the human brain in the classical eyes-closed wakeful rest condition,…”
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Repetitive Transcranial Magnetic Stimulation Induced Seizures in an Adolescent Patient with Major Depression: A Case Report by Chiramberro, Marcelo, Lindberg, Nina, Isometsä, Erkki, Kähkönen, Seppo, Appelberg, Björn

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The neural basis of sublexical speech and corresponding nonspeech processing: A combined EEG–MEG study by Kuuluvainen, Soila, Nevalainen, Päivi, Sorokin, Alexander, Mittag, Maria, Partanen, Eino, Putkinen, Vesa, Seppänen, Miia, Kähkönen, Seppo, Kujala, Teija

“…•We recorded simultaneous EEG–MEG to speech and matched nonspeech sound features.•Distinct neural substrates for speech and nonspeech processing were…”
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Consensus paper: Combining transcranial stimulation with neuroimaging by Siebner, Hartwig R., MD, Bergmann, Til O., MD, Bestmann, Sven, MD, Massimini, Marcello, MD, Johansen-Berg, Heidi, MD, Mochizuki, Hitoshi, MD, Bohning, Daryl E., MD, Boorman, Erie D., MD, Groppa, Sergiu, MD, Miniussi, Carlo, MD, Pascual-Leone, Alvaro, MD, Huber, Reto, MD, Taylor, Paul C.J., MD, Ilmoniemi, Risto J., MD, De Gennaro, Luigi, MD, Strafella, Antonio P., MD, Kähkönen, Seppo, MD, Klöppel, Stefan, MD, Frisoni, Giovanni B., MD, George, Mark S., MD, Hallett, Mark, MD, Brandt, Stephan A., MD, Rushworth, Matthew F., MD, Ziemann, Ulf, MD, Rothwell, John C., MD, Ward, Nick, MD, Cohen, Leonardo G., MD, Baudewig, Jürgen, MD, Paus, Tomáš, MD, Ugawa, Yoshikazu, MD, Rossini, Paolo M., MD

“…In the last decade, combined transcranial magnetic stimulation (TMS)-neuroimaging studies have greatly stimulated research in the field of TMS and…”
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Magnetoencephalography (MEG): a non-invasive tool for studying cortical effects in psychopharmacology by Kähkönen, Seppo

“…Magnetoencephalography (MEG) is a non-invasive method for studying magnetic fields generated by simultaneously firing neurons outside the skull. The skull,…”
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Cognitive function during early abstinence from opioid dependence: a comparison to age, gender, and verbal intelligence matched controls by Rapeli, Pekka, Kivisaari, Reetta, Autti, Taina, Kähkönen, Seppo, Puuskari, Varpu, Jokela, Olga, Kalska, Hely

“…Individuals with opioid dependence have cognitive deficits during abuse period in attention, working memory, episodic memory, and executive function. After…”
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Gluten-free diet may alleviate depressive and behavioural symptoms in adolescents with coeliac disease: a prospective follow-up case-series study by Pynnönen, Päivi A, Isometsä, Erkki T, Verkasalo, Matti A, Kähkönen, Seppo A, Sipilä, Ilkka, Savilahti, Erkki, Aalberg, Veikko A

“…Coeliac disease in adolescents has been associated with an increased prevalence of depressive and disruptive behavioural disorders, particularly in the phase…”
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Excitation threshold of the motor cortex estimated with transcranial magnetic stimulation electroencephalography by Komssi, Soile, Savolainen, Petri, Heiskala, Juha, Kähkönen, Seppo

“…The excitation threshold of the human motor cortex was estimated on the basis of electroencephalographic responses evoked by transcranial magnetic stimulation…”
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Effects of NMDA receptor antagonist memantine on mismatch negativity by Korostenskaja, Milena, Nikulin, Vadim V, Kičić, Dubravko, Nikulina, Anna V, Kähkönen, Seppo

“…Abstract Mismatch negativity (MMN) and its magnetic counterpart (MMN m ) have been shown to be altered in patients with various psychiatric and neurological…”
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