20082021
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Research Output 2008 2019

2019

A guide to group effective connectivity analysis, part 1: First level analysis with DCM for fMRI

Zeidman, P., Jafarian, A., Corbin, N., Seghier, M. L., Razi, A., Price, C. J. & Friston, K. J., 15 Oct 2019, In : NeuroImage. 200, p. 174-190 17 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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1 Citation (Scopus)

Dynamic causal modelling of fluctuating connectivity in resting-state EEG

Van de Steen, F., Almgren, H., Razi, A., Friston, K. & Marinazzo, D., 1 Apr 2019, In : NeuroImage. 189, p. 476-484 9 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
23 Citations (Scopus)

Dynamic causal modelling revisited

Friston, K. J., Preller, K. H., Mathys, C., Cagnan, H., Heinzle, J., Razi, A. & Zeidman, P., 1 Oct 2019, In : NeuroImage. 199, p. 730-744 15 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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3 Citations (Scopus)

Effective connectivity changes in LSD-induced altered states of consciousness in humans

Preller, K. H., Razi, A., Zeidman, P., Stämpfli, P., Friston, K. J. & Vollenweider, F. X., 12 Feb 2019, In : Proceedings of the National Academy of Sciences of the United States of America. 116, 7, p. 2743-2748 6 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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Inferring neural signalling directionality from undirected structural connectomes

Seguin, C., Razi, A. & Zalesky, A., 19 Sep 2019, In : Nature Communications. 10, 1, 13 p., 4289.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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Transdiagnostic variations in impulsivity and compulsivity in obsessive-compulsive disorder and gambling disorder correlate with effective connectivity in cortical-striatal-thalamic-cortical circuits

Parkes, L., Tiego, J., Aquino, K., Braganza, L., Chamberlain, S. R., Fontenelle, L. F., Harrison, B. J., Lorenzetti, V., Paton, B., Razi, A., Fornito, A. & Yücel, M., 15 Nov 2019, In : NeuroImage. 202, 10 p., 116070.

Research output: Contribution to journalArticleResearchpeer-review

Using resting-state DMN effective connectivity to characterize the neurofunctional architecture of empathy

Esménio, S., Soares, J. M., Oliveira-Silva, P., Zeidman, P., Razi, A., Gonçalves, Ó. F., Friston, K. & Coutinho, J., 22 Feb 2019, In : Scientific Reports. 9, 1, 9 p., 2603.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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Volitional modulation of higher-order visual cortex alters human perception

Ekanayake, J., Ridgway, G. R., Winston, J. S., Feredoes, E., Razi, A., Koush, Y., Scharnowski, F., Weiskopf, N. & Rees, G., 1 Mar 2019, In : NeuroImage. 188, p. 291-301 11 p.

Research output: Contribution to journalArticleResearchpeer-review

2018
8 Citations (Scopus)

Altered intrinsic and extrinsic connectivity in schizophrenia

Zhou, Y., Zeidman, P., Wu, S., Razi, A., Chen, C., Yang, L., Zou, J., Wang, G., Wang, H. & Friston, K. J., 2018, In : NeuroImage: Clinical. 17, p. 704-716 13 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
1 Citation (Scopus)

A validation of dynamic causal modelling for 7T fMRI

Tak, S., Noh, J., Cheong, C., Zeidman, P., Razi, A., Penny, W. D. & Friston, K. J., 15 Jul 2018, In : Journal of Neuroscience Methods. 305, p. 36-45 10 p.

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Brain Regions Showing White Matter Loss in Huntington's Disease Are Enriched for Synaptic and Metabolic Genes

McColgan, P., Gregory, S., Seunarine, K. K., Razi, A., Papoutsi, M., Johnson, E., Durr, A., Roos, R. A. C., Leavitt, B. R., Holmans, P., Scahill, R. I., Clark, C. A., Rees, G. & Tabrizi, S. J., 1 Mar 2018, In : Biological Psychiatry. 83, 5, p. 456-465 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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Computational modelling of pathogenic protein behaviour-governing mechanisms in the brain

Georgiadis, K., Young, A. L., Hütel, M., Razi, A., Semedo, C., Schott, J., Ourselin, S., Warren, J. D. & Modat, M., 2018, Proceedings of Medical Image Computing and Computer Assisted Intervention - MICCAI 2018. Frangi, A. F., Schnabel, J. A., Davatzikos, C., Alberola-Lopez, C. & Fichtinger, G. (eds.). Switzerland: Springer, p. 532-539 8 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11072 LNCS).

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

13 Citations (Scopus)

Dynamic effective connectivity in resting state fMRI

Park, H-J., Friston, K. J., Pae, C., Park, B. & Razi, A., Oct 2018, In : NeuroImage. 180, B, p. 594-608 15 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
8 Citations (Scopus)

Testing a longitudinal compensation model in premanifest Huntington's disease

Gregory, S., Long, J. D., Klöppel, S., Razi, A., Scheller, E., Minkova, L., Johnson, E. B., Durr, A., Roos, R. A. C., Leavitt, B. R., Mills, J. A., Stout, J. C., Scahill, R. I., Tabrizi, S. J., Rees, G. & Track On-HD Investigators, 1 Jul 2018, In : Brain. 141, 7, p. 2156-2166 11 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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23 Citations (Scopus)

The Hierarchical Organization of the Default, Dorsal Attention and Salience Networks in Adolescents and Young Adults

Zhou, Y., Friston, K. J., Zeidman, P., Chen, J., Li, S. & Razi, A., 1 Feb 2018, In : Cerebral Cortex. 28, 2, p. 726-737 12 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
5 Citations (Scopus)

Variability and reliability of effective connectivity within the core default mode network: A multi-site longitudinal spectral DCM study

Almgren, H., Van de Steen, F., Kühn, S., Razi, A., Friston, K. & Marinazzo, D., 1 Dec 2018, In : NeuroImage. 183, p. 757-768 12 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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2017
1 Citation (Scopus)

Editorial: Mapping psychopathology with fMRI and effective connectivity analysis

Li, B., Razi, A. & Friston, K. J., 31 Mar 2017, In : Frontiers in Human Neuroscience. 11, 2 p., 151.

Research output: Contribution to journalEditorialOtherpeer-review

Open Access
File
7 Citations (Scopus)

Hierarchical dynamic causal modeling of resting-state fMRI reveals longitudinal changes in effective connectivity in the motor system after thalamotomy for essential tremor

Park, H. J., Pae, C., Friston, K., Jang, C., Razi, A., Zeidman, P., Chang, W. S. & Chang, J. W., 20 Jul 2017, In : Frontiers in Neurology. 8, 9 p., 346.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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Large-scale DCMs for resting-state fMRI

Razi, A., Seghier, M. L., Zhou, Y., McColgan, P., Zeidman, P., Park, H-J., Sporns, O., Rees, G. & Friston, K. J., 22 May 2017, In : Network Neuroscience. 1, 3, p. 222-241 20 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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19 Citations (Scopus)

Operationalizing compensation over time in neurodegenerative disease

Gregory, S., Long, J. D., Klöppel, S., Razi, A., Scheller, E., Minkova, L., Papoutsi, M., Mills, J. A., Durr, A., Leavitt, B. R., Roos, R. A. C., Stout, J. C., Scahill, R. I., Langbehn, D. R., Tabrizi, S. J. & Rees, G., 1 Apr 2017, In : Brain. 140, 4, p. 1158-1165 8 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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17 Citations (Scopus)

Regression DCM for fMRI

Frässle, S., Lomakina, E. I., Razi, A., Friston, K. J., Buhmann, J. M. & Stephan, K. E., 15 Jul 2017, In : NeuroImage. 155, p. 406-421 16 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
6 Citations (Scopus)

Structural and functional brain network correlates of depressive symptoms in premanifest Huntington's disease

McColgan, P., Razi, A., Gregory, S., Seunarine, K. K., Durr, A., A.C. Roos, R., Leavitt, B. R., Scahill, R. I., Clark, C. A., Langbehn, D. R., Rees, G., Tabrizi, S. J. & Track On-HD Investigators, 1 Jun 2017, In : Human Brain Mapping. 38, 6, p. 2819-2829 11 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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6 Citations (Scopus)

Topological length of white matter connections predicts their rate of atrophy in premanifest Huntington’s disease

McColgan, P., Seunarine, K. K., Gregory, S., Razi, A., Papoutsi, M., Long, J. D., Mills, J. A., Johnson, E., Durr, A., Roos, R. A. C., Leavitt, B. R., Stout, J. C., Scahill, R. I., Clark, C. A., Rees, G. & Track On-HD Investigators, 20 Apr 2017, In : JCI Insight. 2, 8, 16 p., e92641.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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7 Citations (Scopus)

White matter predicts functional connectivity in premanifest Huntington's disease

McColgan, P., Gregory, S., Razi, A., Seunarine, K. K., Gargouri, F., Durr, A., Roos, R. A. C., Leavitt, B. R., Scahill, R. I., Clark, C. A., Tabrizi, S. J., Rees, G. & and the Track On-HD Investigators, 1 Feb 2017, In : Annals of Clinical and Translational Neurology. 4, 2, p. 106-118 13 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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2016
76 Citations (Scopus)

Bayesian model reduction and empirical Bayes for group (DCM) studies

Friston, K. J., Litvak, V., Oswal, A., Razi, A., Stephan, K. E., Van Wijk, B. C. M., Ziegler, G. & Zeidman, P., 1 Mar 2016, In : NeuroImage. 128, p. 413-431 19 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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43 Citations (Scopus)

Extrinsic and intrinsic brain network connectivity maintains cognition across the lifespan despite accelerated decay of regional brain activation

Tsvetanov, K. A., Henson, R. N. A., Tyler, L. K., Razi, A., Geerligs, L., Ham, T. E., Rowe, J. B. & Cambridge Centre for Ageing and Neuroscience, 16 Mar 2016, In : Journal of Neuroscience. 36, 11, p. 3115-3126 12 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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8 Citations (Scopus)

Mapping smoking addiction using effective connectivity analysis

Tang, R., Razi, A., Friston, K. J. & Tang, Y. Y., 4 May 2016, In : Frontiers in Human Neuroscience. 10, 9 p., 195.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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19 Citations (Scopus)

The Connected Brain: Causality, models, and intrinsic dynamics

Razi, A. & Friston, K. J., 1 May 2016, In : IEEE Signal Processing Magazine. 33, 3, p. 14-35 22 p., 7461023.

Research output: Contribution to journalArticleResearchpeer-review

2015
57 Citations (Scopus)

Compensation in preclinical Huntington's Disease: evidence from the Track-On HD study

Kloppel, S., Gregory, S., Scheller, E., Minkova, L., Razi, A., Durr, A., Roos, R. A. C., Leavitt, B. R., Papoutsi, M., Landwehrmeyer, B. G., Reilmann, R., Borowsky, B., Johnson, H. J., Mills, J. A., Owen, G. N., Stout, J. C., Scahill, R. I., Long, J. D., Rees, G., Tabrizi, S. J. & 20 others, Coleman, A., Decolongon, J., Fan, M., Koren, T., Jauffret, C., Justo, D., Lehericy, S., Nigaud, K., Valabregue, R., Schoonderbeek, A., 't Hart, E. P., Crawford, H., Johnson, E. B., Read, J., Berna, C., Hensman Moss, D., Craufurd, D. O., Weber, N., Labuschagne, I. & Orth, M., 2015, In : EBioMedicine. 2, 10, p. 1420 - 1429 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
70 Citations (Scopus)

Construct validation of a DCM for resting state fMRI

Razi, A., Kahan, J., Rees, G. & Friston, K. J., 1 Feb 2015, In : NeuroImage. 106, 14 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
3 Citations (Scopus)

Detection of motor changes in huntington's disease using dynamic causal modeling

Minkova, L., Scheller, E., Peter, J., Abdulkadir, A., Kaller, C. P., Roos, R. A. C., Durr, A., Leavitt, B. R., Tabrizi, S. J., Klöppel, S. & TrackOn-HDInvestigators, 25 Nov 2015, In : Frontiers in Human Neuroscience. 9, 13 p., 634.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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32 Citations (Scopus)

Selective vulnerability of Rich Club brain regions is an organizational principle of structural connectivity loss in Huntington's disease

McColgan, P., Seunarine, K. K., Razi, A., Cole, J. H., Gregory, S., Durr, A., Roos, R. A. C., Stout, J. C., Landwehrmeyer, B. G., Scahill, R. I., Clark, C. A., Rees, G., Tabrizi, S. J., Bohlen, S., Crawford, H., Hart, E. P., Hobbs, N. Z., Jauffret, C., Francisque, H., Labuschagne, I. & 16 others, Lahiri, N., Lehericy, S., Monin, M. L., Malone, I., O'Regan, A. M., Queller, S., Read, J., Reilmann, R., Rodig, V., Valabregue, R., van der Grond, J., Whitehead, D., Ttita, F., Vitkin, K., Kelm, T. & Scherer, R., 2015, In : Brain. 138, 11, p. 3327-3344 18 p.

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Tight upper bounds on average detection probability in cooperative relay networks with selection combiner

Mughal, M. O., Razi, A. & Kim, J. M., 1 Mar 2015, In : Transactions on Emerging Telecommunications Technologies. 26, 3, p. 340-345 6 p.

Research output: Contribution to journalLetterResearchpeer-review

2014
139 Citations (Scopus)

A DCM for resting state fMRI

Friston, K. J., Kahan, J., Biswal, B. & Razi, A., 1 Jul 2014, In : NeuroImage. 94, p. 396-407 12 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
29 Citations (Scopus)

On nodes and modes in resting state fMRI

Friston, K. J., Kahan, J., Razi, A., Stephan, K. E. & Sporns, O., 1 Oct 2014, In : NeuroImage. 99, p. 533-547 15 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File

Sum rates for multi-user MIMO vector perturbation precoding with regularization

Razi, A., Ryan, D. J., Yuan, J. & Collings, I. B., 1 Dec 2014, In : Physical Communication. 13, Part C, p. 187-196 10 p.

Research output: Contribution to journalArticleResearchpeer-review

2013
8 Citations (Scopus)

Analysis of energy detector in cooperative relay networks for cognitive radios

Mughal, M. O., Razi, A., Alam, S. S., Marcenaro, L. & Regazzoni, C. S., 7 Nov 2013, Proceedings - 7th International Conference on Next Generation Mobile Applications, Services, and Technologies, NGMAST 2013. p. 220-225 6 p. 6658128

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2012
101 Citations (Scopus)

Secrecy sum-rates for multi-user MIMO regularized channel inversion precoding

Geraci, G., Egan, M., Yuan, J., Razi, A. & Collings, I. B., 2012, In : IEEE Transactions on Communications. 60, 11, p. 3472-3482 11 p., 6253216.

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

User scheduling for multi-antenna downland channels with limited feedback

Razi, A., Shao, Y. & Yuan, J., 2012, In : Transactions on Emerging Telecommunications Technologies. 23, 1, p. 36-49 14 p.

Research output: Contribution to journalArticleResearchpeer-review

2011
11 Citations (Scopus)

Secrecy sum-rates for multi-user MIMO linear precoding

Geraci, G., Yuan, J., Razi, A. & Collings, I. B., 2011, ISWCS'11 - 2011 8th International Symposium on Wireless Communication Systems, Proceedings. p. 286-290 5 p. 6125355

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

1 Citation (Scopus)

Sum rates for regularized multi-user MIMO vector perturbation precoding

Razi, A., Ryan, D. J., Yuan, J. & Collings, I. B., 2011, ISWCS'11 - 2011 8th International Symposium on Wireless Communication Systems, Proceedings. p. 532-536 5 p. 6125415

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2010

Comparison of time domain and frequency domain equalization for HSDPA channel

Tasadduq, B., Haroon, A., Imtiaz, H. & Razi, A., 2010, 3CA 2010 - 2010 International Symposium on Computer, Communication, Control and Automation. Vol. 1. p. 346-349 4 p. 5533811

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

1 Citation (Scopus)

Performance analysis of multibranch dual-hop nonregenerative relay systems with EGC in Nakagami-m channels

Husain, S. I., Huynh, H. Q., Yuan, J., Razi, A. & Suzuki, H., 2010, In : Eurasip Journal on Wireless Communications and Networking. 2010, 835498.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Performance of vector perturbation multiuser MIMO systems over correlated channels

Razi, A., Ryan, D. J., Yuan, J. & Collings, I. B., 2010, 2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings. 5506749

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

29 Citations (Scopus)

Sum rates, rate allocation, and user scheduling for multi-user MIMO vector perturbation precoding

Razi, A., Ryan, D. J., Collings, I. B. & Yuan, J., Jan 2010, In : IEEE Transactions on Wireless Communications. 9, 1, p. 356-365 10 p., 5374079.

Research output: Contribution to journalArticleResearchpeer-review

2009
1 Citation (Scopus)

Performance analysis of multi-branch non-regenerative relay systems with EGC in Nakagami-m channels

Huynh, H. Q., Husain, S. I., Yuan, J., Razi, A. & Taubman, D. S., 2009, Proceedings of the 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall. 5378710

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

5 Citations (Scopus)

Sum rates and user scheduling for multi-user MIMO vector perturbation precoding

Razi, A., Ryan, D. J., Collings, I. B. & Yuan, J., 2009, Proceedings - 2009 IEEE International Conference on Communications, ICC 2009. 5199498

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2008

Comparison of time domain and frequency domain equalizers for indoor UWB systems

Bin Waheed, U., Abdullah, W., Siddiqui, S. A., Khan, M. D. & Razi, A., 2008, Proceedings - 2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering, SIBIRCON 2008. p. 440-443 4 p. 4602578

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Feedback reduction schemes for MIMO broadcast channels

Razi, A. & Yuan, J., 2008, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008. 4699832

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review