Shivakumar Viswanathan
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Publications
Click on publication titles to access text (PDF or online access). Publication profile also available at [Google Scholar] and [Researchgate].

2022

Differentiated, rather than shared, strategies for time-coordinated action in social and non-social domains in individuals with autism  (2022) [Preprint]
Bloch, C., Viswanathan, S., Tepest, R., Jording, M., Falter-Wagner, C., & Vogeley, K.
OSF Preprints [https://doi.org/10.31219/osf.io/qj6v7]


Topics: Autism, time-coordination, action synchronization, pointing, multi-sensory perception, periodicity
Methods: Movement tracking, Principal Components Analysis
Robustness of individualized inferences from longitudinal resting state EEG dynamics (2022)
Hommelsen, M., Viswanathan, S., & Daun, S.
European Journal of Neuroscience, 1– 32. [https://doi.org/10.1111/ejn.15673]


Topics: Neural plasticity, resting state, individualization, person identification
Methods: Longitudinal tracking, EEG, Machine Learning, ensemble classifiers

Recovered grasping performance after stroke depends on interhemispheric frontoparietal connectivity (2022)
Hensel, L., Lange, F., Tscherpel, C., Viswanathan, S., , Freytag, J., Volz, L., Eickhoff, S., Fink, G. R., & Grefkes, C.
Brain,  in press. [https://doi.org/10.1093/brain/awac157]


Topics: Stroke recovery, motor networks, reaching, grasping
Methods: Movement tracking, FMRI, TMS
An individualized functional magnetic resonance imaging protocol to assess semantic congruency effects on episodic memory in an aging multilingual population (2022)
Perquin M., Viswanathan S., Vaillant M., Risius O., Huiart L., Schmit J-C., Diederich N. J., Fink G. R., and Kukolja J.
Frontiers in Aging Neuroscience, 14 : 873376. [https://doi.org/10.3389/fnagi.2022.873376]

Topics: Aging, memory (episodic, semantic), multilingualism, individualization
Methods: Object (picture, word) recognition, multilingual stimulus library, FMRI
The capacity and organization of gustatory working memory (2022)
Lim, S. X. L., Hoechenberger, R., Ruda, I., Fink, G. R., Viswanathan, S.*, & Ohla, K.* [*=equal contribution]
Scientific Reports, Vol. 12, 8056. [https://doi.org/10.1038/s41598-022-12005-x]

Topics: Taste, Working Memory, capacity, stimulus similarity,
Methods: List memory, gustometer, behavior
Dissociating passage and duration of time experiences through the intensity of ongoing visual change (2022)
Jording, M., Vogel, D. H., Viswanathan, S., & Vogeley, K.
Scientific Reports, Vol. 12, 8226. [https://doi.org/10.1038/s41598-022-12063-1]

Topics: Time experience, passage of time, duration estimation
Methods: Visual motion, online experiment, behavior

2020

A response-locking protocol to boost sensitivity for fMRI-based neurochronometry (2020)
Viswanathan, S.*, Abdollahi, R.O.*, Wang, B.A., Grefkes, C., Fink, G.R. & Daun, S. [*=equal contribution]
Human Brain Mapping, 41, pp. 3420– 3438. [https://doi.org/10.1002/hbm.25026]

Topics: Decision making, motor networks, Response Time, Neural timing
Methods: Random Dot Motion stimuli, FMRI, multivariate time-series analysis
The role of dopamine in dynamic effort-reward integration (2020)
Michely, J., Viswanathan, S., Hauser, T. U., Delker, L., Dolan, R. J. & Grefkes, C. 
Neuropsychopharmacology, [https://doi.org/10.1038/s41386-020-0669-0]

Topics: Effort, reward processing, dopamine, grip force control
Methods: Grip force dynamometer, real-time visual feedback, monetary rewards, L-DOPA/haloperidol/placebo
Invasive versus non-invasive mapping of the motor cortex (2020).
Weiss Lucas, C., Nettekoven, C., Neuschmelting, V., Oros-Peusquens, A., Stoffels, G., Viswanathan, S., Rehme, A. K., Faymonville, A. M., Shah, N. J.,  Langen, K. J., Goldbrunner, R., & Grefkes, C.
Human Brain Mapping, 41, pp 3970– 3983.  [https://doi.org/10.1002/hbm.25101]

Topics: Neurosurgical planning, Motor cortex mapping [hand, foot, tongue]
Methods: Direct Cortical Stimulation (DCS), FMRI, TMS, computational geometry

2019

Freely chosen and instructed actions are terminated by different neural mechanisms revealed by kinematics-informed EEG (2019)
Viswanathan, S.*, Wang, B.A.*, Abdollahi, R.O.,  Daun, S., Grefkes, C. & Fink, G.R. [*=equal contribution]
NeuroImage, 188, pp. 26-42 [https://doi.org/10.1016/j.neuroimage.2018.12.005]


Topics: Volition, response selection, motor control,
Methods: Movement tracking (accelerometer), EEG, time-frequency analysis (phase, power dynamics), spatial filter

2018

Aging-associated changes of movement-related functional connectivity in the human brain (2018)
Rosjat, N., Liu, L., Wang, B.A., Popovych, S., Toth, T.I., Viswanathan, S., Grefkes, C., Fink, G.R. & Daun, S.
Neuropsychologia, 117, pp. 520-529 [https://doi.org/10.1016/j.neuropsychologia.2018.07.006]

Topics: Aging, voluntary action, dynamic functional connectivity
Methods: EEG, time-frequency analysis, functional connectivity (phase-locking value), graphs
Predicting IDH genotype in gliomas using FET PET radiomics (2018)
Lohmann, P., Lerche, C., Bauer, E.K. Steger., J., Stoffels, G., Blau, T., Dunkl, V., Kocher, M., Viswanathan, S.,  Filss, C. P., Stegmayr, C., Neumaier, B., Shah, N.J., Fink, G. R., Langen, K.J.  & Galldiks, N.
Scientific Reports, 8:13328 [https://doi.org/10.1038/s41598-018-31806-7]

Combined FET PET/MRI radiomics differentiates radiation injury from recurrent brain metastasis (2018)
Lohmann, P., Kocher, M., Ceccon, G., Bauer, E.K., Stoffels, G., Viswanathan, S., Ruge, M. I., Neumaier, B., Shah, N. J., Fink, G. R., Langen, K.J. & Galldiks, N.
Neuroimage: Clinical, Vol. 20, pp 537 - 542. [https://doi.org/10.1016/j.nicl.2018.08.024]

Topics: Neuro-oncology, radiomics
Methods: Positron Emission Tomography (PET), radiomics, image classification

2017

Age-related changes in oscillatory power affect motor action (2017)
Liu, L., Rosjat, N., Popovych, S., Wang, B.A.,  Yeldesbay, A., Toth, T. I., Viswanathan, S.,  Grefkes, C., Fink, G.R., & Daun, S.
PloS One, 12(11): e0187911


Topics: Aging, voluntary action, oscillations
Methods: EEG, time-frequency analysis, phase-locking
Frequency-specific modulation of connectivity in the ipsilateral sensorimotor cortex by different forms of movement initiation (2017)
Wang, B.A.,  Viswanathan, S., Abdollahi, R.O., Rosjat, N.,  Popovych, S., Daun, S., Grefkes, C., & Fink, G.R.
NeuroImage, Vol 159, pp. 248-260.

Topics: Voluntary action, oscillations, functional connectivity
Methods: EEG, time-frequency analysis, power, functional connectivity (phase coherence)

2016

Movement-related phase locking in the delta–theta frequency band (2016)
Popovych, S., Rosjat, N., Toth, T.I., Wang, B.A., Liu, L., Abdollahi, R.O., Viswanathan, S., Grefkes, C., Fink, G.R. & Daun, S.
NeuroImage, Vol 139, pp.439-449.


Topics: Voluntary action, oscillations, phase relationships
Methods: EEG, time-frequency analysis, phase-locking
Coupling between theta oscillations and cognitive control network during cross-modal visual and auditory attention: Supramodal vs Modality specific mechanisms (2016)
Wang, W., Viswanathan, S., Lee, T., & Grafton, S. T.
PloS One, 11(7), e0158465.

Topics: Multi-sensory attention, audition, vision
Methods: Simultaneous EEG-FMRI, time-frequency analysis,

2015

Dopaminergic modulation of motor network dynamics in Parkinson’s disease  (2015)
Michely, J., Volz, L. J., Barbe, M. T., Hoffstaedter, F., Viswanathan, S., Timmermann, L., Eickhoff, S., Fink, G.R., & Grefkes, C.
Brain,  pp. 664-678

Topics: Parkinson's disease, voluntary action, dopamine, effective connectivity
Methods: FMRI, Dynamical Causal Models (DCM)
Rethinking the role of motor simulation in perceptual decisions (2015) [Book chapter]
Grafton, S.T. & Viswanathan, S
Progress in Motor Control, pp. 69-90, Springer New York

Topics: Motor cognition, motor imagery, action perception, multi-sensory perception, vision, proprioception
Methods: Behavior, Response Times

2014

Picture
Feature interactions enable decoding of sensorimotor transformations for goal-directed movement (2014)
Barany, D., Della-Maggiore, V., Viswanathan, S., Cieslak, M., & Grafton, S. T.
Journal of Neuroscience, Vol. 34, No. 20, pp 6860 - 6873

Topics: Motor representations, motor control
Methods: FMRI, movement kinematic tracking, Machine Learning

2012

Telling the right hand from the left hand: Multisensory integration, not motor imagery, solves the problem (2012)
Viswanathan, S., Fritz, C., & Grafton, S. T. 
Psychological Science, Vol 23, No. 6, pp. 598-607.

Topics: Motor cognition, motor imagery, mental rotation, body perception, multi-sensory perception, vision, proprioception
Methods: Behavior, Response Times
Pouring or chilling a bottle of wine: an fMRI study on the prospective planning of object-directed actions (2012)
Van Elk, M., Viswanathan, S., Van Schie, H. T., Bekkering, H., & Grafton, S. T.
Experimental Brain Research, Vol. 218, No. 2, 189-200.

Topics: Motor cognition, motor imagery, action perception, semantic memory
Methods: FMRI, behavior
Modulations of ongoing alpha oscillations predict successful short-term visual memory encoding (2012)
Nenert, R., Viswanathan, S., Dubuc, D. M., & Visscher, K. M.
Frontiers in human neuroscience, Vol. 6, pp. 127.

Topics: Vision, short-term memory, alpha oscillations
Methods: EEG, behavior
On the geometric structure of fMRI searchlight-based information maps (2012) [Preprint]
Viswanathan, S., Cieslak, M., & Grafton, S. T.
arXiv preprint arXiv:1210.6317.

Topics: Pattern analysis, statistical inference, methodology
Methods: FMRI, Mathematical and computational modeling

2010

Homogeneity computation: How interitem similarity in visual short-term memory alters recognition (2010)
Viswanathan, S., Perl, D. R., Visscher, K. M., Kahana, M. J., & Sekuler, R.
Psychonomic Bulletin & Review, Vol 17, No. 11, 59-65.

Topics: Vision, short-term memory
Methods: Behavior, computational modeling

pre-2009 (selected)

The secondary substrate problem in Co-Evolution and Developmental-Evolution (2007)
Viswanathan, S.
PhD dissertation, Brandeis University
Product configuration optimization for disassembly planning: A differential approach (2006)
Viswanathan, S., & Allada, V.
Omega, Vol 34. No. 6, pp. 599-616
How Artificial Ontogenies can retard evolution (2005)
Viswanathan, S. & Pollack, J.B.
SEEDS workshop at the 2005 Genetic and Evolutionary Computation Conference (GECCO), pp. 273 - 280, ACM Press.
Configuration analysis to support product redesign for end-of-life disassembly (2001)
Viswanathan, S., & Allada, V.
International Journal of Production Research, Vol 39. No. 8, pp. 1733-1753.
A framework for the flexible grouping of products for disassembly (1999)
Viswanathan, S., & Allada, V.
Journal of Electronics Manufacturing, Vol. 9, No. 01, pp. 53-66.
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