Werdegang und Qualifikationen

• Medizinstudium an J.-W.-Goethe-Universität, Frankfurt am Main, Deutschland und am Trinity College in Dublin, Irland.
• Psychotherapeutische Ausbildung mit Schwerpunkt auf kognitiver Verhaltenstherapie und zusätzlicher Weiterbildung in CBASP, systemischer Therapie, Autogenem Training, Emotions- fokussierter Therapie (EFT) und tiefenpsychologischen Verfahren.
• Psychiatrische Ausbildung an der Universitätsklinik für Psychiatrie und Psychotherapie Bern.
• Umfassende Erfahrung in Elektrotherapien, wie transcranielle Magnetstimulation (TMS), transcranielle Direct Currend Stimulation (tDCS) und Elektrokonvulsionstherapie (EKT).
• Umfassende Erfahrung in der psychiatrischer Spezialdiagnostik z.B. für ADHS, Autismusspektrumstörung, usw.
• Neurowissenschaftler mit Schwerpunkt in bildgebender Hirnforschung (MRI, fMRI, ASL, EEG) bei diversen psychischen Erkrankungen (siehe Publikationsliste).
• Bis zur Gründung der IPP-Bern AG 2013 tätig als Leitender Arzt an der Psychiatrischen Poliklinik am Inselspital Bern.

Titel

• Facharzt FMH für Psychiatrie und Psychotherapie
• Zusätzlicher Schwerpunkttitel Konsiliar- und Laiasonpsychiatrie FMH
• zertifizierter medizinischer Gutachter Swiss Insurance Medicine (SIM)
• Habilitiert als Privatdozent an der Universität Bern

Wissenschaftliche Preise

• Wissenschaftlicher Preis der Deutsche Gesellschaft für Psychiatrie, Psychotherapie und Nervenheilkunde (DGPPN) 2005
• Wissenschaftlicher Preis der Schweizer Gesellschaft für biologische Psychiatrie (SGBP) 2010

Vorträge

Diverse Vorlesungen und Vorträge für Medizin- und Psychologiestudenten der Universität Bern, ärztliche Fort- und Weiterbildung, an internationalen wissenschaftlichen Kongressen und in der Öffentlichkeitsarbeit.

Internationale wissenschaftliche Publikationen

• Cantisani A, Koenig T, Horn H, Müller T, Strik W, Walther S. Psychomotor retardation is linked to frontal alpha asymmetry in major depression. J Affect Disord. 2015 Sep 5;188:167-172.

• Walther S, Stegmayer K, Horn H, Rampa L, Razavi N, Müller TJ, Strik W. The Longitudinal Course of Gross Motor Activity in Schizophrenia – Within and between Episodes. Front Psychiatry. 2015 Feb 5;6:10.

• Walther S, Stegmayer K, Horn H, Razavi N, Müller TJ, Strik W. Physical Activity in Schizophrenia is Higher in the First Episode than in Subsequent Ones. Front Psychiatry. 2015 Jan 5;5:191.

• Stegmayer K, Horn H, Federspiel A, Razavi N, Bracht T, Laimböck K, Strik W, Dierks T, Wiest R, Müller TJ, Walther S. Supplementary motor area (SMA) volume is associated with psychotic aberrant motor behaviour of patients with schizophrenia. Psychiatry Res. 2014 Jul 30;223(1):49-51.

• Bracht T, Horn H, Strik W, Federspiel A, Razavi N, Stegmayer K, Wiest R, Dierks T, Müller TJ, Walther S. White matter pathway organization of the reward system is related to positive and negative symptoms in schizophrenia. Schizophr Res. 2014 Mar;153(1-3):136-42.

• Bracht T, Horn H, Strik W, Federspiel A, Schnell S, Höfle O, Stegmayer K, Wiest R, Dierks T, Müller TJ, Walther S. White matter microstructure alterations of the medial forebrain bundle in melancholic depression. J Affect Disord. 2014 Feb;155:186-93.

• Walther S, Moggi F, Horn H, Moskvitin K, Abderhalden C, Maier N, Strik W, Müller TJ. Rapid tranquilization of severely agitated patients with schizophrenia spectrum disorders: a naturalistic, rater-blinded, randomized, controlled study with oral haloperidol, risperidone, and olanzapine. J Clin Psychopharmacol. 2014 Feb;34(1):124-8.

• Stegmayer K, Horn H, Federspiel A, Razavi N, Bracht T, Laimböck K, Strik W, Dierks T, Wiest R, Müller TJ, Walther S. Ventral striatum gray matter density reduction in patients with schizophrenia and psychotic emotional dysregulation. Neuroimage Clin. 2013 Dec 27;4:232-9.

• Soravia LM, Heinrichs M, Winzeler L, Fisler M, Schmitt W, Horn H, Dierks T, Strik W, Hofmann SG, de Quervain DJ. Glucocorticoids enhance in vivo exposure-based therapy of spider phobia.. Depress Anxiety. 2013 Nov 21.

• Walther S, Ramseyer F, Horn H, Strik W, Tschacher W. Less Structured Movement Patterns Predict Severity of Positive Syndrome, Excitement, and Disorganization. Schizophr Bull. 2013 Mar 15.

• Fisler MS, Federspiel A, Horn H, Dierks T, Schmitt W, Wiest R, de Quervain DJ, Soravia LM. Spider phobia is associated with decreased left amygdala volume: a cross-sectional study. BMC Psychiatry. 2013 Feb 26;13:70.

• Bracht T, Schnell S, Federspiel A, Razavi N, Horn H, Strik W, Wiest R, Dierks T, Müller TJ, Walther S. Altered cortico-basal ganglia motor pathways reflect reduced volitional motor activity in schizophrenia. Schizophr Res. 2013 Feb;143(2-3):269-76.

• Giezendanner S, Walther S, Razavi N, Van Swam C, Fisler MS, Soravia LM, Andreotti J, Schwab S, Jann K, Wiest R, Horn H, Müller TJ, Dierks T, Federspiel A. Alterations of white matter integrity related to the season of birth in schizophrenia: a DTI study. PLoS One. 2013 Sep 27;8(9):e75508.

• Bracht T, Heidemeyer K, Koschorke P, Horn H, Razavi N, Wopfner A, Strik W, Walther S. Comparison of objectively measured motor behavior with ratings of the motor behavior domain of the Bern Psychopathology Scale (BPS) in schizophrenia. Psychiatry Res. 2012 Jul 30;198(2):224-9.

• Walther S, Hügli S, Höfle O, Federspiel A, Horn H, Bracht T, Wiest R, Strik W, Müller TJ. Frontal white matter integrity is related to psychomotor retardation in major depression. Neurobiol Dis. 2012 Jul;47(1):13-9.

• Orosz A, Jann K, Federspiel A, Horn H, Höfle O, Dierks T, Wiest R, Strik W, Müller T, Walther S. Reduced cerebral blood flow within the default-mode network and within total gray matter in major depression. Brain Connect. 2012;2(6):303-10.

• Walther S, Höfle O, Federspiel A, Horn H, Hügli S, Wiest R, Strik W, Müller TJ. Neural correlates of disbalanced motor control in major depression. J Affect Disord. 2012 Jan;136(1-2):124-33.

• Horn H, Jann K, Federspiel A, Walther S, Wiest R, Müller T, Strik W. Semantic network disconnection in formal thought disorder. Neuropsychobiology. 2012;66(1):14-23.

• Bracht T, Federspiel A, Schnell S, Horn H, Höfle O, Wiest R, Dierks T, Strik W, Müller TJ, Walther S. Cortico-cortical white matter motor pathway microstructure is related to psychomotor retardation in major depressive disorder. PLoS One. 2012;7(12):e52238.

• Razavi N, Horn H, Koschorke P, Hügli S, Höfle O, Müller T, Strik W, Walther S. Measuring motor activity in major depression: the association between the Hamilton Depression Rating Scale and actigraphy. Psychiatry Res. 2011 Dec 30;190(2-3):212-6.

• Wirth M, Rahman RA, Kuenecke J, Koenig T, Horn H, Sommer W, Dierks T. Effects of transcranial direct current stimulation (tDCS) on behaviour and electrophysiology of language production. Neuropsychologia. 2011 Dec;49(14):3989-98.

• Walther S, Federspiel A, Horn H, Razavi N, Wiest R, Dierks T, Strik W, Müller TJ. Alterations of white matter integrity related to motor activity in schizophrenia. Neurobiol Dis. 2011 Jun;42(3):276-83.

• Walther S, Federspiel A, Horn H, Razavi N, Wiest R, Dierks T, Strik W, Müller TJ. Resting state cerebral blood flow and objective motor activity reveal basal ganglia dysfunction in schizophrenia. Psychiatry Res. 2011 May 31;192(2):117-24.

• Wirth M, Jann K, Dierks T, Federspiel A, Wiest R, Horn H. Semantic memory involvement in the default mode network: a functional neuroimaging study using independent component analysis. Neuroimage. 2011 Feb 14;54(4):3057-66.

• Horn H, Federspiel A, Wirth M, Müller TJ, Wiest R, Walther S, Strik W. Gray matter volume differences specific to formal thought disorder in schizophrenia. Psychiatry Res. 2010 May 30;182(2):183-6.

• Walther S, Horn H, Razavi N, Koschorke P, Wopfner A, Müller TJ, Strik W. Higher motor activity in schizophrenia patients treated with olanzapine versus risperidone. J Clin Psychopharmacol. 2010 Apr;30(2):181-4.

• Walther S, Federspiel A, Horn H, Wiest R, Dierks T, Strik W, Müller TJ. White matter integrity associated with volitional motor activity. Neuroreport. 2010 Mar 31;21(5):381-5.

• Strik W, Wopfner A, Horn H, Koschorke P, Razavi N, Walther S, Wirtz G. The Bern psychopathology scale for the assessment of system-specific psychotic symptoms. Neuropsychobiology. 2010;61(4):197-209.

• Walther S, Federspiel A, Horn H, Wirth M, Bianchi P, Strik W, Müller TJ. Performance during face processing differentiates schizophrenia patients with delusional misidentifications. Psychopathology. 2010;43(2):127-36.

• Walther S, Koschorke P, Horn H, Strik W. Objectively measured motor activity in schizophrenia challenges the validity of expert ratings. Psychiatry Res. 2009 Oct 30;169(3):187-90.

• Walther S, Federspiel A, Horn H, Bianchi P, Wiest R, Wirth M, Strik W, Müller TJ. Encoding deficit during face processing within the right fusiform face area in schizophrenia. Psychiatry Res. 2009 Jun 30;172(3):184-91.

• Horn H, Federspiel A, Wirth M, Müller TJ, Wiest R, Wang JJ, Strik W. Structural and metabolic changes in language areas linked to formal thought disorder. Br J Psychiatry. 2009 Feb;194(2):130-8.

• Walther S, Horn H, Razavi N, Koschorke P, Müller TJ, Strik W. Quantitative motor activity differentiates schizophrenia subtypes. Neuropsychobiology. 2009;60(2):80-6.

• Walther S, Horn H, Koschorke P, Müller TJ, Strik W. Increased motor activity in cycloid psychosis compared to schizophrenia. World J Biol Psychiatry. 2009;10(4 Pt 3):746-51.

• Wirth M, Horn H, Koenig T, Razafimandimby A, Stein M, Mueller T, Federspiel A, Meier B, Dierks T, Strik W. The early context effect reflects activity in the temporo-prefrontal semantic system: evidence from electrical neuroimaging of abstract and concrete word reading. Neuroimage. 2008 Aug 1;42(1):423-36.

• Strik W, Dierks T, Hubl D, Horn H. Hallucinations, thought disorders, and the language domain in schizophrenia. Clin EEG Neurosci. 2008 Apr;39(2):91-4. Review.

• Wirth M, Horn H, Koenig T, Stein M, Federspiel A, Meier B, Michel CM, Strik W. Sex differences in semantic processing: event-related brain potentials distinguish between lower and higher order semantic analysis during word reading. Cereb Cortex. 2007 Sep;17(9):1987-97.

• Federspiel A, Müller TJ, Horn H, Kiefer C, Strik WK. Comparison of spatial and temporal pattern for fMRI obtained with BOLD and arterial spin labeling. J Neural Transm. 2006 Oct;113(10):1403-15.

• Federspiel A, Volpe U, Horn H, Dierks T, Franck A, Vannini P, Wahlund LO, Galderisi S, Maj M. Motion standstill leads to activation of inferior parietal lobe. Hum Brain Mapp. 2006 Apr;27(4):340-9.

• Müller TJ, Federspiel A, Horn H, Lövblad K, Lehmann C, Dierks T, Strik WK. The neurophysiological time pattern of illusionary visual perceptual transitions: a simultaneous EEG and fMRI study. Int J Psychophysiol. 2005 Mar;55(3):299-312.

• Horn H, Syed N, Lanfermann H, Maurer K, Dierks T. Cerebral networks linked to the event-related potential P300. Eur Arch Psychiatry Clin Neurosci. 2003 Jun;253(3):154-9.