DSC_0163Allan Hummer is a PhD student at the Medical University of Vienna. His the topic of his master thesis was retinotopic mapping of the visual cortex. He also conducted his bachelor thesis, which focused on resting state networks, here at the MR Centre of Excellence.

Peer-reviewed Journal Papers

Hummer A, Ritter M, Woletz M, Ledolter AA, Tik M, Dumoulin SO, Holder GE, Schmidt-Erfurth U, Windischberger C. Artificial scotoma estimation based on population receptive field mapping.. Neuroimage. 2018 Apr 1;169:342-351. 2018.

Kranz GS, Hahn A, Kaufmann U, Tik M, Ganger S, Seiger R, Hummer A, Windischberger C, Kasper S, Lanzenberger R. Effects of testosterone treatment on hypothalamic neuroplasticity in female-to-male transgender individuals.. Brain Struct Funct. 2018 Jan;223(1):321-328. 2018.

Ritter M, Hummer A, Ledolter AA, Holder GE, Windischberger C, Schmidt-Erfurth UM. Correspondence between retinotopic cortical mapping and conventional functional and morphological assessment of retinal disease.. Br J Ophthalmol. 2018 Apr 26. 2018.

Kranz GS, Seiger R, Kaufmann U, Hummer A, Hahn A, Ganger S, Tik M, Windischberger C, Kasper S, Lanzenberger R. Effects of sex hormone treatment on white matter microstructure in individuals with gender dysphoria. Neuroimage Feb 13;150:60-67, 2017.

Tik M, Hoffmann A, Sladky R, Tomova L, Hummer A, Navarro de Lara L, Bukowski H, Pripfl J, Biswal B, Lamm C, Windischberger C. Towards understanding rTMS mechanism of action: Stimulation of the DLPFC causes network-specific increase in functional connectivity. Neuroimage. 2017 Nov 15;162:289-296. doi: 10.1016/j.neuroimage.2017.09.022, 2017.

Hahn A, Kranz GS, Sladky R, Kaufmann U, Ganger S, Hummer A, Seiger R, Spies M, Vanicek T, Winkler D, Kasper S, Windischberger C, Swaab DF, Lanzenberger R. Testosterone affects language areas of the adult human brain. Hum Brain Mapp May;37(5):1738-48, 2016.

Hummer A, Ritter M, Tik M, Ledolter AA, Woletz M, Holder GE, Dumoulin SO, Schmidt-Erfurth U, Windischberger C. Eyetracker-based gaze correction for robust mapping of population receptive fields. Neuroimage Nov 15;142:211-224, 2016.

Majdandžić J, Amashaufer S, Hummer A, Windischberger C, Lamm C. The selfless mind: How prefrontal involvement in mentalizing with similar and dissimilar others shapes empathy and prosocial behavior. Cognition Dec;157:24-38, 2016.

Seiger R, Hahn A, Hummer A, Kranz GS, Ganger S, Woletz M, Kraus C, Sladky R, Kautzky A, Kasper S, Windischberger C, Lanzenberger R. Subcortical gray matter changes in transgender subjects after long-term cross-sex hormone administration. Psychoneuroendocrinology Dec;74:371-379, 2016.

Spies M, Hahn A, Kranz GS, Sladky R, Kaufmann U, Hummer A, Ganger S, Kraus C, Winkler D, Seiger R, Comasco E, Windischberger C, Kasper S, Lanzenberger R. Gender transition affects neural correlates of empathy: A resting state functional connectivity study with ultra high-field 7T MR imaging. Neuroimage Sep;138:257-65, 2016.

Tomova L, Majdandžić J, Hummer A, Windischberger C, Heinrichs M, Lamm C. Increased neural responses to empathy for pain might explain how acute stress increases prosociality. Soc Cogn Affect Neurosci Oct 19, 2016.

Rauchbauer B, Majdandžić J, Hummer A, Windischberger C, Lamm C. Distinct neural processes are engaged in the modulation of mimicry by social group-membership and emotional expressions. Cortex. 2015 Mar 20. pii: S0010-9452(15)00096-9. doi: 10.1016/j.cortex.2015.03.007. [Epub ahead of print] PubMed PMID: 25929599. 2015.

Rütgen M, Seidel EM, Silani G, Riečanský I, Hummer A, Windischberger C, Petrovic P, Lamm C. Placebo analgesia and its opioidergic regulation suggest that empathy for pain is grounded in self pain. Proc Natl Acad Sci U S A Oct 13;112(41):E5638-46, 2015.

Seiger R, Hahn A, Hummer A, Kranz GS, Ganger S, Küblböck M, Kraus C, Sladky R, Kasper S, Windischberger C, Lanzenberger R. Voxel-based morphometry at ultra-high fields. a comparison of 7T and 3T MRI data. Neuroimage 113:207-16, 2015.

Sladky R, Spies M, Hoffmann A, Kranz G, Hummer A, Gryglewski G, Lanzenberger R, Windischberger C, Kasper S. (S)-citalopram influences amygdala modulation in healthy subjects: a randomized placebo-controlled double-blind fMRI study using dynamic causal modeling. Neuroimage. 2015 Mar;108:243-50. doi: 10.1016/j.neuroimage.2014.12.044. Epub 2014 Dec 20. PubMed PMID: 25536499. 2015.

Hahn A, Kranz GS, Küblböck M, Kaufmann U, Ganger S, Hummer A, Seiger R, Spies M, Winkler D, Kasper S, Windischberger C, Swaab DF, Lanzenberger R. Structural Connectivity Networks of Transgender People. Cereb Cortex. 2014 Sep 12. pii: bhu194. [Epub ahead of print] PubMed PMID: 25217469. 2014.

Kranz GS, Hahn A, Kaufmann U, Küblböck M, Hummer A, Ganger S, Seiger R, Winkler D, Swaab D, Windischberger C, Kasper S, Lanzenberger R. White matter microstructure in transsexuals and controls investigated by diffusion tensor imaging. Journal of Neuroscience 2014 [2013, IF: 6.747]; 2014.

Pfabigan DM, Seidel EM, Sladky R, Hahn A, Paul K, Grahl A, Küblböck M, Kraus C, Hummer A, Kranz GS, Windischberger C, Lanzenberger R, Lamm C. P300 amplitude variation is related to ventral striatum BOLD response during gain and loss anticipation: an EEG and fMRI experimentNeuroimage. 2014 Aug 1;96:12-21. Neuroimage; 96:12-21, 2014.

Seidel EM, Pfabigan DM, Hahn A, Sladky R, Grahl A, Paul K, Kraus C, Küblböck M, Kranz GS, Hummer A, Lanzenberger R, Windischberger C, Lamm C.. Uncertainty during pain anticipation: The adaptive value of preparatory processes. Hum Brain Mapp. 2014 Oct 16. doi: 10.1002/hbm.22661. [Epub ahead of print] PubMed PMID: 25324216., 2014.

Hahn A, Kranz GS, Seidel EM, Sladky R, Kraus C, Küblböck M, Pfabigan DM, Hummer A, Grahl A, Ganger S, Windischberger C, Lamm C, Lanzenberger R. Comparing neural response to painful electrical stimulation with functional MRI at 3 and 7T. Neuroimage. 82C:336-343, 2013.

Peer-reviewed Conference Abstracts

Tik M, Woletz M, Navarro de Lara L, Sladky R, Hoffmann A, Schuler AL, Willinger D, Geissberger N, Hummer A, Windischberger C. . Mapping TMS immediate effects by concurrent TMS/fMRI using a dedicated high-sensitivity coil array. 23rd Meeting of the Organization for Human Brain Mapping, HBM – Vancouver, 2017.

Tik M, Woletz M, Navarro de Lara L, Sladky R, Hoffmann A, Hummer A, Windischberger C. . Mapping TMS local and remote immediate effects by concurrent TMS/fMRI using a dedicated high-sensitivity coil array *. The triple M approach: Mapping, Modeling and Modulation in brain stimulation research @ 2nd International Brain Stimulation Conference - Barcelona, 2017.

Tik M, Woletz M, Navarro de Lara L, Sladky R, Hoffmann A, Hummer A, Windischberger C. . Insights into depression and TMS as a treatment option. Brain Stimulation and Imaging Meeting, BrainSTIM - Vancouver, 2017.

Tik M, Woletz M, Navarro de Lara L, Sladky R, Hoffmann A, Hummer A, Geissberger N, Windischberger C. . Mapping TMS immediate effects by concurrent TMS/fMRI using a dedicated high-sensitivity coil array. 25th Annual Meeting of the International Society for Magnetic Resonance Imaging, ISMRM - Honolulu, Hawaii, 2017.

Tik M, Woletz M, Hummer A, Geissberger N, Windischberger C. . Individualized Thresholds: Calibrating brain stimulation through concurrent TMS/fMRI. 2nd European Conference on Brain Stimulation in Psychiatry, ECBSP - Munich, 2017.

Woletz M, Goluch S, Hummer A, Windischberger C. . Human tissue equivalent MRI phantom for 3 and 7 tesla *. 25th Annual Meeting of the International Society for Magnetic Resonance Imaging, ISMRM - Honolulu, Hawaii. 2017.

Kranz GS, Seiger R, Kaufmann U, Hummer A, Hahn A, Ganger S, Sladky R, Windischberger C, Kasper S, Lanzenberger R. . Effects of sex hormone treatment on white matter microstructure in patients with gender dysphoria. 30th CINP World Congress of Neuropsychopharmacology – Seoul, 2016.

Tik M, Woletz M, Navarro de Lara L, Sladky R, Hoffmann A, Hummer A, Windischberger C. . Multimodal assessment of TMS-induced acute effects *. 6th International Conference on Transcranial Brain Stimulation - Göttingen, 2016.

Tik M, Hoffmann A, Sladky R, Tomova L, Hummer A, Navarro de Lara L, Biswal B, Bukowski H, Pripfl J, Lamm C, Windischberger C. . Assessing effectiveness and specificity of DLPFC rTMS using an unbiased resting-state approach. 6th International Conference on Transcranial Brain Stimulation - Göttingen, 2016.

Tik M, Woletz M, Navarro de Lara L, Sladky R, Hoffmann A, Hummer A, Windischberger C. . Multimodal assessment of TMS acute and long-term changes *. Brain Stimulation and Imaging Meeting, BrainSTIM - Geneva, 2016.

Hahn A, Kranz G, Sladky R, Kaufmann U, Ganger S, Hummer A, Seiger R, Spies M, Vanicek T, Winkler D, Kasper S, Windischberger C, Swaab D, Lanzenberger R. . Continuous testosterone administration affects language-specific brain structures and function. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Hoffmann A, Sladky R, Spies M, Pfabigan M, Küblböck M, Höflich A, Seidel EM, Hummer A, Lamm C, Lanzenberger R, Windischberger C. . Detection Sensitivity of the Default Mode Network at 3T and 7T. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Hummer A, Ritter M, Tik M, Ledolter A, Schmidt-Erfurth U, Windischberger C. . ICA-based denoising of population receptive field maps. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Hummer A, Ritter M, Tik M, Ledolter A, Schmidt-Erfurth U, Windischberger C. . Eyetracker-based gaze correction for robust mapping of population receptive fields. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Kranz G, Hahn A, Kauffmann U, Küblböck M, Hummer A, Ganger S, Seiger R, Windischberger C, Kasper S, Lanzenberger R. . Hypothalamic microstructure changes after testosterone treatment in female-to-male transsexuals. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Seidel EM, Rütgen M, Hummer A, Windischberger C, Silani G, Lamm C. . Functional similarity – Pain and empathy for pain are modulated by placebo analgesia. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Tik M, Sladky R, Di Bernardi Luft C, Hoffmann A, Hummer A, Banassy M, Bhattacharya J, Windischberger C. . Ultra-high field fMRI insights on insight: Neural correlates of the “Aha!”-moment. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Tik M, Hoffmann A, Sladky R, Tomova L, Hummer A, Navarro di Lara L, Biswal B, Pripfl J, Lamm C, Windischberger C. . 10Hz rTMS over the left DLPFC specifically modulates ACC connectivity within IC network 17. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Tik M, Woletz M, Lucia Navarro de Lara, Sladky R, Hoffmann A, Hummer A, Windischberger C. . Multimodal Assessment of Local and Remote TMS-induced Effects. 21st Meeting of the Organization for Human Brain Mapping, HBM – Honolulu, 2015.

Tomova L, Majdandžić J, Hummer A, Windischberger C, Lamm C. . Disentangling the effects of stress on neural components underlying the experience of empathy. The Society for Neuroeconomics Annual Conference, 2015.

Hoffmann A, Sladky R, Spies M, Pfabigan DM, Küblböck M, Höflich A, Paul K, Hummer A, Kranz G, Lamm C, Lanzenberger R, Windischberger C. . Frequency-dependency of the Default-Mode Network. 20th Meeting of the Organization for Human Brain Mapping, HBM – Hamburg, 2014.

Hoffmann A, Sladky R, Spies M, Pfabigan D, Küblböck M, Höflich A, Paul K, Hummer A, Kranz GS, Lamm C, Lanzenberger R, Windischberger C. . Frequency-dependency of the default-mode network. 4th Biennial Conference on Resting-State Brain Connectivity – Boston, 2014.

Hoffmann A, Sladky R, Spies M, Pfabigan D, Küblböck M, Höflich A, Seidel EM, Hummer A, Lamm C, Lanzenberger R, Windischberger C. . Sensitivity of the default-mode network at 7T. 4th Biennial Conference on Resting-State Brain Connectivity – Boston, 2014.

Hummer A, Sladky R, Ritter M, Küblböck M, Schmidt-Erfurth U, Windischberger C. . Detection of small simulated scotoma using population receptive field mapping. 20th Meeting of the Organization for Human Brain Mapping, HBM – Hamburg, 2014.

Küblböck M, Komorowski A, Hummer A, Hahn A, Pfabigan DM, Hoffmann A, Kraus C, Woletz M, Seidel EM, Lanzenberger R, Lamm C, Windischberger C. . Reduction in vascular confounds of 3T and 7T fMRI group analysis results using the RESCALE method. 20th Meeting of the Organization for Human Brain Mapping, HBM – Hamburg, 2014.

Küblböck M, Hoffmann A, Hahn A, Pfabigan D, Hummer A, Woletz M, Sladky R, Ganger S, Seidel EM, Lanzenberger R, Lamm C, Windischberger C. . Reduction of vascular confounds in fMRI group analysis results using modified RESCALE method. 4th Biennial Conference on Resting-State Brain Connectivity – Boston, 2014.

Rauchbauer B, Majdandžić J, Hummer A, Windischberger C, Lamm C. . Effects of social group membership and affiliative signals on automatic imitation. 20th Meeting of the Organization for Human Brain Mapping, HBM – Hamburg, 2014.

Seidel EM, Abrahamczik M, Hummer A; Windischberger C, Silani G, Lamm C. . The specificity of placebo effects in somatosensation — An fMRI study. 20th Meeting of the Organization for Human Brain Mapping, HBM – Hamburg, 2014.

Sladky R, Spies M, Hoffmann A, Kranz G, Hummer A, Gryglewski G, Lanzenberger R, Windischberger C, Kasper S. . (S)-citalopram influences amygdalar modulation in healthy subjects demonstrated by DCM for fMRI. 20th Meeting of the Organization for Human Brain Mapping, HBM – Hamburg, 2014.

Hahn A, Kranz G, Seidel EM, Sladky R, Kraus C, Küblböck M, Pfabigan D, Hummer A, Grahl A, Ganger S, Windischberger C, Lamm C, Lanzenberger R. . Imaging the periaqueductal gray during pain processing at 3 and 7 Tesla functional MRI. 19th Meeting of the Organization for Human Brain Mapping, HBM - Seattle, 2013.

Hummer A, Sladky R, Küblböck M, Windischberger C. . High resolution population receptive field mapping using multiband imaging. 19th Meeting of the Organization for Human Brain Mapping, HBM - Seattle, 2013.

Küblböck M, Sladky R, Hummer A, Hahn A, Höflich A, Lanzenberger R, Windischberger C. . Consistency of fractional amplitude of low frequency fluctuations (fALFF) maps. 19th Meeting of the Organization for Human Brain Mapping, HBM - Seattle, 2013.

Kraus C, Kranz G, Küblböck M, Pfabigan D, Hahn A, Sladky R, Seidel EM, Hummer A, Paul K, Ganger S, Windischberger C, Lamm C, Lanzenberger R. . Reward anticipation maps comparing high and ultrahigh field functional MRI. 19th Meeting of the Organization for Human Brain Mapping, HBM - Seattle, 2013.

Pfabigan D, Seidel EM, Sladky R, Hahn A, Paul K, Küblböck M, Kraus C, Hummer A, Kranz G, Windischberger C, Lanzenberger R, Lamm C. . A multimodal study on gain and loss anticipation combining fMRI and EEG. 19th Meeting of the Organization for Human Brain Mapping, HBM - Seattle, 2013.

Seidel EM, Pfabigan D, Hahn A, Sladky R, Grahl A, Kraus C, Küblböck M, Kranz G, Hummer A, Lanzenberger R, Windischberger C, Lamm C. . Uncertainty during pain anticipation - An fMRI and EEG experiment. 19th Meeting of the Organization for Human Brain Mapping, HBM - Seattle, 2013.

Hummer A, Sladky R, Lanzenberger R, Moser E, Windischberger C. . Modeling activation patterns during the Tower of London and a motor-visual task using a set of resting state networks. 3rd Biennial Conference on Resting-state Brain Connectivity - Magdeburg, 2012.

Tröstl J, Sladky R, Hummer A, Kraus C, Moser E, Ksaper S, Lanzenberger R, Windischberger C. . Reduced connectivity in the uncinate fiber tract between the frontal cortex and limbic subcortical areas in social phobia. 19th European Congress of Psychiatry, EPA - Vienna, 2011.

Tröstl J, Sladky R, Hummer A, Kraus C, Moser E, Kasper S, Lanzenberger R, Windischberger C. . White Matter Alterations in Social Anxiety Disorder: a DTI study. 17th Meeting of the Organization for Human Brain Mapping, HBM - Quebec, 2011.