Ioan Opris

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Ioan Opris

Research Associate Professor Biomedical Engineering Department

Biography


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Biography

Ioan Opris is a Research Associate Professor in the Department of Biomedical Engineering at the University of Miami, and Center for Neural Engineering, and Associate Scientist at the Miami Project to Cure Paralysis from the Miller School of Medicine. He received his PhD degree in Physics/Biophysics from the University of Bucharest in 1995. His doctoral research was performed during Jan 1992-to-Apr 1993, at the Tokyo Institute of Technology in Japan, where he conducted computational modelling of memory retrieval in neural network models, under a predoctoral Scholarship, from the Japanese Ministry of Education. Since 1995, Dr. Opris conducted research at Columbia University and Yale University as a postdoctoral research associate in neuroscience, investigating cognitive function with neurophysiological methods. He studied the decision-making mechanism in the prefrontal cortex of nonhuman primates, with results that brought him a McDonnell Pew award in 2000. Then, in 2003, he moved at Wake Forest University School of Medicine in North Carolina, where the WFU team demonstrated for the first time the facilitation and restoration of cognitive function by a neuroprosthesis that utilizes minicolumnar neural firing in primate prefrontal cortex. This result was featured by NY Times, in September 2012, highlighting the feasibility of memory prosthesis. He is currently working with Professor Brian Noga at the Miami Project to Cure Paralysis on several projects investigating the neural substrates of locomotion and defensive behavior. Dr. Opris is now pioneering, together with Professor Stewart Barnes from the Physics Department, the developing of noninvasive recording and stimulation tools for brain activity, based on Spintronics (Magnetic Nanotechnology). Amongst recent recognitions, Dr. Opris has received the 2014 ARA Excellence Award for Science, from the American Romanian Academy of Arts and Sciences, the 2015 Innovation in Health Award from Integrative Medicine from Romanian National Academy, the 2015 Innovation in Health Award from Romania. Most recently, he is the recipient of the first Frontiers Spotlight Award 2017, that will organize an International Conference on Brain Augmentation in September 2018 in Lausanne, Switzerland.

Research Interests

Neural Technology, DBS, Noninvasive Neuromodulation, Motor neurophysiology, Cognitive Neuroscience, Neuroprosthetics,

HIGHER EDUCATION

    • University of Bucharest, Bucharest, Romania, Ph.D. in Physics (1995)
    • University of Bucharest, Bucharest, Romania, B.S. in Physics/Biophysics (1982)

EXPERIENCE

    • University of Miami, Research Associate Professor. Department of Biomedical Engineering (2018 - Present)
    • University of Miami, Associate Scientist. (2016 - 2018)
    • Wake Forest University, Research Scientist. Physiology and Pharmacology (2003 - 2015)
    • Yale University School of Medicine, Postdoctoral Research Associate. Department of Neurobiology (1999 - 2003)
    • Columbia University School of Medicine, Postdoctoral Fellow. Department of Psychiatry and NY State Psychiatric Institute (1998 - 1999)
    • University of Tennessee Memphis, Postdoctoral Research Associate. Department of Anatomy and Neurobiology (1995 - 1998)
    • University of Bucharest, Assistant Professor. Department of Physics (1990 - 1995)
    • "Dragos Voda" High School Sighetu-Marmatiei, High School Teacher of Physics. (1982 - 1990)

PUBLICATIONS

  • Juried or Refereed Journal Articles or Exhibitions

    • Sokhadze , E. M., Lamina, E. V., Casanova, E. L., Kelly, D. P., Opris, I., Tasman, A., Casanova, M. F. (2018).Exploratory Study of rTMS Neuromodulation Effects on Electrocortical Functional Measures of Performance in an Oddball Test and Behavioral Sympstoms in Autism. Front. Syst. Neuroscience, 12:20. http://doi.org/10.3389/fnsys.2018.00020
    • Deadwyler, S. A., Hampson, R. E., Song, D., Opris, I., Gerhardt, G. A., Marmarelis, V. Z., Berger, T. W. (2017).A cognitive prosthesis for memory facilitation by closed-loop functional ensemble stimulation of hippocampal neurons in primate brain. Exp Neurol, 287, 452-460. http://doi.org/10.1016/j.expneurol.2016.05.031
    • Sokhadze, E. M., Lamina, E. V., Casanova , E. L., Kelly, D. P., Opris, I., Khachidze, I., Casanova, M. F. (2017).Atypical Processing of Novel Distracters in a Visual Oddball Task in Autism Spectrum Disorder. Behav Sciences, 7, 79. http://doi.org/10.3390/bs7040079
    • Opris, I., Nestianu, V. S., Nestianu, A., Bilteanu, L., Ciurea, J. (2017).George Marinesco in the Constellation of Modern Neuroscience. Front. Neuroscience, 11, 726. http://doi.org/10.3389/fnins.2017.00726
    • Opris, I., Chang, S., (2017).What Is the Evidence for Inter-laminar Integration in a Prefrontal Cortical Minicolumn? . Front. Neuroanat., 11:116. http://doi.org/10.3389/fnana.2017.00116
    • Popa, I., Donos, C., Barborica, A., Opris, I., Mălîia, M. D., Ene, M., Ciurea, J., Mîndruţă , I. (2016).Intrusive thoughts elicited by direct electrical stimulation during stereo-electroencephalography. Front. Neurology, 7, 114. http://doi.org/10.3389/fneur.2016.00114
    • , G., , V., , Ş. T., , V., Opris, I., , M. A., , M. V. (2016).Mechatronic Wearable Exoskeletons for Bionic Bipedal Standing and Walking: A New Synthetic Approach . Front. Neuroscience, 10, 343. http://doi.org/10.3389/fnins.2016.00343
    • Opris, I., Lebedev , M. A., Nelson, R. J. (2016).Neostriatal neuronal activity correlates better with movement kinematics under certain rewards. Front. Neuroscience, 10, 336. http://doi.org/10.3389/fnins.2016.00336
    • Casanova, M. F., Sokhadze, E., Opris, I., Wang, Y., Li, X. (2015).Autism spectrum disorders: linking neuropathological findings to treatment with transcranial magnetic stimulation. Acta Paediatrica , 104, 346-355. http://doi.org/10.1111/apa.12943
    • Opris, I., Gerhardt, G. A., Hampson, R. E., Deadwyler, S. A., Tinsley , C. J. (Ed.) (2015).Disruption of columnar and laminar cognitive processing in primate prefrontal cortex following cocaine exposure. Front. Systems Neuroscience, 9, 79. http://doi.org/10.3389/fnsys.2015.00079
    • Opris, I., , L. M., , G. A., , D., , T. W., E, R., , S. A. (2015).Distributed Encoding of Spatial and Object Categories in Primate Hippocampal Microcircuits. Front. Neuroscience, 9, 317. http://doi.org/10.3389/fnins.2015.00317
    • Fetterhoff, D., Kraft , R., Sandler , R., Opris, I., Sexton , C. A., Marmarelis , V. Z., Deadwyler, S. A., Hampson, R. E. (2015).Multifractal Complexity of Hippocampal Neurons after Delta-9-Tetrahydrocannabinol Administration during Working Memory and Rest . Front. Systems Neuroscience, 9, 130. http://doi.org/10.3389/fnsys.2015.00130
    • Deadwyler, S. A., Berger, T. W., Opris, I., Song , D., Hampson, R. E. (2015).Neurons and networks organizing and sequencing memories. Brain research , 1621 , 335-344. http://doi.org/10.1016/j.brainres.2014.12.037
    • Santos, L. M., Opris, I., Hampson , R. E., Godwin , D. W., Gerhardt , G. A., Deadwyler , S. A. (2014).Functional dynamics of primate cortico-striatal networks during volitional movements. Front. Syst. Neurosci., 8, 27. http://doi.org/10.3389/fnsys.2014.00027
    • Song , D., Chan, R. H., Robinson , B. S., Marmarelis , V. Z., Opris, I., Hampson, R. E., Deadwyler, S. A., Berger , T. W. (2014).Identification of functional synaptic plasticity from spiking activities using nonlinear dynamical modeling. J Neurosci Methods, 244 , 123-135. http://doi.org/doi.org/10.1016/j.jneumeth.2014.09.023
    • Opris, I., Casanova, M. F. (2014). Prefrontal cortical minicolumn: from executive control to disrupted cognitive processing. Brain, 137, 1863-1875. http://doi.org/doi.org/10.1093/brain/awt359
    • Opris, I., Ferrera , V. P. (2014).Modifying Cognition and Behavior with Microstimulation: Implications for Cognitive Prostheses. Neuroscience and Biobehavioral Reviews , 47, 321-335. http://doi.org/10.1016/j.neubiorev.2014.09.003
    • Sokhadze , E. M., El-Baz , A. S., Sears , L. L., Opris, I., Casanova , M. F. (2014).rTMS neuromodulation improves electrocortical functional measures of information processing and behavioral responses in autism. Front Syst. Neurosci. , 244 , 123-135. http://doi.org/10.3389/fnsys.2014.00134
    • Fetterhoff , D., Opris, I., Simpson , S. L., Deadwyler, S. A., Hampson , R. E., Kraft , R. A. (2014).Multifractal Analysis of Information Processing in Hippocampal Neural Ensembles During Working Memory under Delta-9 Tetrahydrocannabinol Administration. Journal Neurosci. Methods, 244, 136-153. http://doi.org/10.1016/j.jneumeth.2014.07.013
    • Vidu , R., Rahman , M., Mahmoudi M, M., Enachescu, M., Poteca , T. D., Opris, I. (2014).Nanostructures: A Platform for Brain Augmentation. Front. Syst. Neurosci., 8, 91. http://doi.org/10.3389/fnsys.2014.00091
    • Opris, I., Fuqua, J. L., Gerhardt , G. A., Hampson , R. E., Deadwyler , S. A. (2014).Prefrontal cortical recordings with biomorphic MEAs reveals complex columnar-laminar microcircuits for BMI implementation.. J.Neurosci. Methods , 244, 104-113. http://doi.org/10.1016/j.jneumeth.2014.05.029
    • Porrino, L. J., Hampson , R. E., Opris, I., Deadwyler , S. A. (2013).Acute cocaine induced deficits in cognitive performance in rhesus macaque monkeys treated with baclofen. Psychopharmacology, 225, 105–114. http://doi.org/10.1007/s00213-012-2798-6
    • Hampson , R. E., Fuqua , J. L., Huettl , P., Opris, I., Song , D., Shin , D., Marmaarelis, V., Berger , T. W., Gerhardt , G. A., Deadwyler , S. A. (2013).Conformal Ceramic Electrodes That Record Glutamate Release and Corresponding Neural Activity in Primate Prefrontal Cortex. 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 5954 – 5957. http://doi.org/10.1109/EMBC.2013.6610908
    • Deadwyler, S. A., Hampson , R. E., Song , D., Chan , R. H., Opris, I., Gerhardt , G. A., Marmaarelis, V., Berger, T. W. (2013).Donor/Recipient Enhancement of Memory in Rat Hippocampus. Front. Syst. Neurosci., 7, 12. http://doi.org/10.3389/fnsys.2013.00120
    • Hampson , R. E., Song , D., Opris, I., Santos , L. M., Shin , D., Gerhardt, G. A., Marmaarelis, V., Berger , T. W., Deadwyler, S. A. (2013).Facilitation of Memory Encoding in Primate Hippocampus by a Neuroprosthesis that Promotes Task Specific Neural Firing. J Neural Eng, 10, 066013. http://doi.org/10.1088/1741-2560/10/6/066013
    • Opris, I. (2013).Inter-Laminar Microcircuits across the Neocortex: Repair and Augmentation. Front. Syst. Neurosci., 7, 80. http://doi.org/10.3389/fnsys.2013.00080
    • Opris, I., Santos , L. M., Song , D., Berger , T. W., Gerhardt , G. A., Hampson , R. E., Deadwyler , S. A. (2013).Prefrontal cortical microcircuits bind perception to executive control. Scientific Reports, 3, 2285. http://doi.org/10.1038/srep02285
    • Opris, I., Fuqua, J. L., Huettl P, P., Gerhardt , G. A., Berger , T. W., Hampson , R. E., Deadwyler, S. A. (2012).Closing the loop in primate prefrontal cortex: Inter-laminar processing. Front. Neural Circuits., 6, 88. http://doi.org/10.3389/fncir.2012.00088
    • Opris, I., E, R., A, G., W, T., , S. A. (2012).Columnar processing in primate prefrontal cortex: Evidence for executive control microcircuits. J. Cogn. Neuro, 24, 2334-47. http://doi.org/10.1162/jocn_a_00307
    • Hampson , R. E., Gerhardt , G. A., Marmarelis , V. Z., Song , D., Opris, I., Santos, L. M., Berger , T. W., Deadwyler , S. A. (2012).Facilitation and Restoration of Cognitive Function in Primate Prefrontal Cortex by a Neuroprosthesis that Utilizes Minicolumn-Specific Neural Firing. J Neural Eng, 9, 056012. http://doi.org/10.1088/1741-2560/9/5/056012
    • Song, D., Opris, I., Chan , R. H., Marmarelis , V. Z., Hampson , R. E., Deadwyler , S. A., Berger , T. W. (2012).Functional connectivity between Layer 2/3 and Layer 5 neurons in prefrontal cortex of nonhuman primates during a delayed match-to-sample task Sign In or Purchase. 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2012, 2555-2558 . http://doi.org/10.1109/EMBC.2012.6346485
    • Santos , L. M., Opris, I., Fuqua, J. L., Hampson , R. E., Deadwyler , S. A. (2012).A novel tetrode microdevice for simultaneous single-unit recording and microstimulation of several brain regions in primates. Journal of Neuroscience Methods, 205, 368-74. http://doi.org/10.1016/j.jneumeth.2012.01.006
    • Hampson , R. E., Porrino , L. J., Opris, I., Stanford , T. E., Deadwyler, S. A. (2011).Effects of cocaine on neural substrates of cognitive demand in nonhuman primates. Behavioural Pharmacology, 22, e12.
    • Opris, I., Hampson , R. E., Stanford , T. R., Gerhardt , G. A., Deadwyler, S. A. (2011).Neural Activity of Frontal Cortical Layers: Evidence for Columnar Sensorimotor Processing. J Cogn Neurosci. , 23, 1507-1521. http://doi.org/ 10.1162/jocn.2010.21534
    • Opris, I., Lebedev , M. A., Nelson , R. J. (2011).Motor planning under unpredictable reward: modulations of movement vigor and primate striatum activity. Front. Neurosci., 5, 61. http://doi.org/10.3389/fnins.2011.00061
    • Hampson, . E., Porrino, L. J., Opris, I., Stanford, T. R., Deadwyler , S. A. (2011).Effects of cocaine rewards on neural representations of cognitive demand in nonhuman primates. Psychopharmacology, 213, 105-118. http://doi.org/doi.org/10.1007/s00213-010-2017-2
    • Hampson , R. E., Opris, I., Deadwyler , S. A. (2010).Fast pupil dilation, cognitive workload and frontal neural activity: Pupillometry in nonhuman primates. Behav. Brain Res. , 212, 1-11. http://doi.org/doi: 10.1016/j.bbr.2010.03.011
    • Opris, I., Hampson, R. E., Deadwyler , S. A. (2009).The encoding of cocaine vs. natural rewards in the striatum of nonhuman primates: categories with different activations. Behavioural Neuroscience, 163, 40–54. http://doi.org/10.1016/j.neuroscience.2009.06.002
    • Opris, I., Barborica, A., Ferrera , V. P. (2005).Microstimulation of the dorsolateral prefrontal cortex biases saccade target selection. J Cogn Neurosci. , 17, 893-904. http://doi.org/10.1162/0898929054021120
    • Opris, I., Bruce , C. J. (2005).Neural circuitry of judgment and decision mechanisms. Brain Research Reviews, 48, 509-26. http://doi.org/10.1016/j.brainresrev.2004.11.001
    • Opris, I., Barborica, A., Ferrera , V. P. (2005).Effects of Electrical Microstimulation in Monkey Frontal Eye Field on Saccades to Remembered Targets. Vision Research, 45, 3414-3429. http://doi.org/10.1016/j.visres.2005.03.014
    • Opris, I., Barborica , A., Ferrera , V. P. (2003).Comparison of performance on memory-guided saccade and delayed spatial match-to-sample tasks in monkeys. Vision Research, 43, 321-332. http://doi.org/10.1016/S0042-6989(02)00418-2
    • Opris, I., Barborica , A., Ferrera, V. P. (2001).On the gap effect for saccades evoked by electrical microstimulation of frontal eye fields in monkeys. Experimental Brain Research, 138, 1–7. http://doi.org/ 10.1007/s002210100686
    • Opris, I. (1995).An associative memory implemented into a Van der Pol coupled oscillator neural network. Annals of Bucharest University, Physics section, XLIII, 9-16.
    • Opris, I., Rimbu, v. (1995).Bifurcation phenomena of the delta correlated noise driven Van der Pol oscillator. Romanian Journal of Physics, 40, 3-9.
    • Opris, I. (1995).The dynamics of associative memory with a general transfer function.. Physical Review E , 51, 2619-2623. http://doi.org/10.1103/PhysRevE.51.2619
    • Opris, I., Shiino, M. (1994).Coupled oscillator neural networks as associative memory. Romanian Reports in Physics , 47, 21-26.
    • Opris, I. (1994).Neural networks with nonmonotonic neurons. Romanian Reports in Physics, 46, 455-61.
    • Nishimori , H., Opris, I. (1993).Retrieval process of an associative memory with general input- output function. Neural Networks, 6, 1061-1067. http://doi.org/10.1016/S0893-6080(09)80017-8
  • Refereed Books

    • Opris, I. , Lebedev , M. A., Casanova, M. F. (Eds.) Modern Approaches to Augmentation of Brain Function. Springer.
    • Casanova, M. F., Opris, I. (Eds.) Focus on Systems Theory Research. Nova Science Publishers.
    • Opris, I. , Casanova, M. F. (Eds.) The Physics of the Mind and Brain Disorders: Integrated Neural Circuits Supporting the Emergence of Mind. Springer.
    • Casanova, M. F., Opris, I. (Eds.) Recent Advances on the Modular Organization of the Cortex. Springer Netherlands.

    Book Chapters

    • Casanova, M. F., Sokhadze, E. M., Opris, I., Li , X., Casanova , E. L. (2018). Autism, Transcranial Magnetic Stimulation and Gamma Frequencie. Autism Spectrum Disorder: Neuromodulation, Neurofeedback and Sensory Integration Approaches (pp. ). Sokhadze EM, and Casanova MF.
    • Opris, I., Sokhadze, E. M., Casanova, M. F., Casanova, E. L. (2018). Modular approach to the organization of brain functions by the brain's connectome. Focus on Systems Theory Research (pp. ). Nova Science Publishers. Casanova MF and Opris I editors.
    • Casanova, M. F., Sokhadze, E. M., Opris, I., Li, X., Casanova , E. L. (2018). Systems Theory and the Cerebral Cortex. Focus on Systems Theory Research (pp. ). Nova Science Publishers. Casanova MF and Opris I editors.
    • Zăgrean , A. M., Ianosi , B., Sonea , C., Opris, I., Zăgrean , L. (2017). Blood Brain Barrier and the Mind Chapter 32. In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 713-740). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Predoi , G., Raus, I., Bărbuceanu, F., Opris, I. (2017). Insights into the Animal’s Mind. Chapter 31. In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 691-712). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Opris, I., Casanova , M. F., Lebedev , M. A., Popescu , A. I. (2017). Integrated Neural Circuits Supporting the Emergence of Mind. Chapter 4. In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 69-94). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Popescu , A. I., Opris, I. (2017). Introduction: From Neurons to the Mind, Chapter 2 . In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. ). Edited by Dr. Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Sonea , C., Opris , A. L., Casanova , M. F., Constantinescu , M. V., Opris, I. (2017). Mind the Reward: Nutrition vs. Addiction Chapter 26 . In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 469-489). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Opris, I., Casanova , M. F. (2017). Perturbation of Symmetry Breaking in Cognitive Disorders. Chapter 8 . In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 175-192). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Bilteanu , L., Casanova , M. F., Opris, I. (2017). Symmetry and Noether Theorem for Brain Microcircuits. Chapter 6. In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 129-154). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Opris, I. (2017). Symmetry Breaking in the Brain and Locomotion. Chapter 7. In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 155-174). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Casanova, M. F., Opris, I., Sokhadze , E. M., Casanova , E. L. (2017). Systems Theory, Emergent Properties, and the Organization of the Central Nervous System. Chapter 3 . In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 55-68). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Opris, I. (2017). The Hierarchical Circuit for Executive Control of Movement Chapter 5 . In Physics of the mind and brain disorders: Advances in Electrostimulation Therapies (pp. 95-128). Edited by Ioan Opris and Manuel F Casanova, in Springer Series in Neural Systems, Springer Nature.
    • Opris, I. (2016). Electrical stimulation for modification of memory and cognition. Chapter 12. Electroceuticals: Advances in Electrostimulation Therapies (pp. 283-316). Edited by Dr. Arshad Majid, in Springer Science and Business Media.
    • Ciurea, A., Ciurea, J., Opris, I. (2016). Neuromodulation of consciousness state. Chapter 13. Electroceuticals: Advances in Electrostimulation Therapies (pp. 317-346). Edited by Dr. Arshad Majid, in Springer Science and Business Media.
    • Deadwyler , S. A., Opris, I., Santos , L. M., Hampson , R. E., Gerhardt , G. A., Song, D., Marmarelis, V. Z., Berger , T. W. (2015). Extraction of Cortical Modularity Patterns for Neural Prosthetics. Chapter 19. Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 367-384). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Song, D., Hsiao , M. C., Opris, I., Hampson , R. E., Marmarelis , V. Z., Gerhardt, G. A., Deadwyler , S. A., Berger, T. W. (2015). Hippocampal Microcircuits, Functional Connectivity and Prosthetics. Chapter 20.. Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 385-405). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Lebedev , M. A., Opris, I. (2015). Interfaces: From Macro- to Microcircuits. Chapter 21. Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 407-428). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Casanova, M. F., Opris, I. (2015). Introduction. Chapter 1. . Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 1-5). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Ciurea , A., Mindruta, I., Ciurea , A., Ciurea, J., Barborica, A., Donos , C., Casanova , M. F., Opris, I. (2015). Modular Signatures and Neural Avalanches in Epileptic Brain Networks. Chapter 15. Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 271-295). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Opris, I., Popa , I. L., Casanova, M. F. (2015). Prefrontal Cortical Microcircuits of Executive Control.Chapter 10. Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 157-179). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Gerhardt , G. A., Opris, I., Burmeister , J. J., Pomerleau, F., Quintero , J. E., Huettl , P., Hampson , R. E., Deadwyler , S. A. (2015). The Function of Microcircuits: Insights from Biomorphic Ceramic-based Micro-electrode Arrays. Chapter 17. Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 313- 337). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Enachescu , M., Vidu , R., Opris, I. (2015). Uncovering Cortical Modularity by Nanotechnology, Chapter 18. . Recent Advances on the Modular Organization of the Cerebral Cortex (pp. 339-366). Editor(s): Manuel F Casanova and Ioan Opris, Springer.
    • Opris, I., Fuqua, J. L., Huettl , P., Gerhardt , G. A., Berger , T. W., Hampson , R. E., Deadwyler, S. A. (2014). Closing the loop in primate prefrontal cortex: Inter-laminar processing. Closing the Loop Around Neural Systems. (pp. 128-140). Frontiers Research Topic Ebook.
    • Opris, I., Lebedev , M. A., Nelson , R. J. (2011). Motor planning under unpredictable reward: modulations of movement vigor and primate striatum activity. Neurobiology of Choice (pp. 69-80). Daeyeol Lee, Paul Glimcher, Julia Trommershaeuser, Frontiers Media SA.
    • Salinas, E., Opris, I., Zainos, A., Hernandez, A., Romo, R., (2000). Motor and non-motor roles of the cortico-basal ganglia circuitry. Brain dynamics and the striatal complex (pp. 237-255). Amsterdam, Harwood Academy.
    • Opris, I., (1998). Storage capacity of associative memories with non-monotonic neurons. Proceedings of the First International Conference: Unsolved Problems on Noise in Physics, Biology, Electronic Technology and Information Technology (pp. 275-282). World Scientific.
    • Nishimori, H., Ozeki , T., Opris, I., (1993). Simulating memory retrieval processes in an associative memory. Computer Aided Inovation of New Materials II (pp. 383-388). Elsevier, Amsterdam.

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