Researchers

  • Principal Investigator
  • Male

Prof. dr. P.R. Roelfsema PhD

Position:
Main activities: Research
Specialisation:
foto P.R. Roelfsema is one of the AMC Principal Investigators
Focus of research:
AMC themes: Neurological & Psychiatric Disorders
Departments: Psychiatry: Adult Psychiatry
Chen X, Possel JK, Wacongne C, van Ham AF, Klink PC, Roelfsema PR, 3D printing and modelling of customized implants and surgical guides for non-human primates. J NEUROSCI METH 2017;286:38-55 [PubMed]
Christophel TB, Klink PC, Spitzer B, Roelfsema PR, Haynes JD, The Distributed Nature of Working Memory. TRENDS COGN SCI 2017;21 (2):111-124 [PubMed]
Gariel-Mathis MA. Connectivity and processing in the macaque cerebral cortex. S.l.: s.n.; 2017. 203p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): Knoblauch K)
Klink PC, Boucherie D, Denys D, Roelfsema PR, Self MW, Interocularly merged face percepts eliminate binocular rivalry. SCI REP-UK 2017;7 (1):7585 [PubMed]
Klink PC, Dagnino B, Gariel-Mathis MA, Roelfsema PR, Distinct Feedforward and Feedback Effects of Microstimulation in Visual Cortex Reveal Neural Mechanisms of Texture Segregation. NEURON 2017;95 (1):209-220.e3 [PubMed]
Klink PC, Jeurissen D, Theeuwes J, Denys D, Roelfsema PR, Working memory accuracy for multiple targets is driven by reward expectation and stimulus contrast with different time-courses. SCI REP-UK 2017;7 (1):9082 [PubMed]
Self MW, Roelfsema PR, Neuroscience: Out of Sight but Not Out of Mind. CURR BIOL 2017;27 (7):R269-R271 [PubMed]
Self MW, Roelfsema PR, Paying Attention to the Cortical Layers. NEURON 2017;93 (1):9-11 [PubMed]
Self MW, van Kerkoerle T, Goebel R, Roelfsema PR, Benchmarking laminar fMRI: Neuronal spiking and synaptic activity during top-down and bottom-up processing in the different layers of cortex. NEUROIMAGE 2017;ahead of print [PubMed]
van Kerkoerle T, Self MW, Roelfsema PR, Layer-specificity in the effects of attention and working memory on activity in primary visual cortex. NAT COMMUN 2017;8:13804 [PubMed]
Vartak D, Jeurissen D, Self MW, Roelfsema PR, The influence of attention and reward on the learning of stimulus-response associations. SCI REP-UK 2017;7 (1):9036 [PubMed]
Zylberberg A, Lorteije JAM, Ouellette BG, de Zeeuw CI, Sigman M, Roelfsema P, Serial, parallel and hierarchical decision making in primates. ELIFE 2017;6:e17331 [PubMed]
Dagnino Amezaga B. Cortical activity that enters into awareness: the role of feedforward and feedback connections. S.l.: s.n.; 2016. 172p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): Self MW)
Jeurissen D, Self MW, Roelfsema PR, Serial grouping of 2D-image regions with object-based attention in humans. ELIFE 2016;5:e14320 [PubMed]
Jeurissen JJDM. Perceptual Grouping of Complex Objects in the Primate Visual System. S.l.: s.n.; 2016. 168p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): Self MW)
Klink PC, Roelfsema PR, Binocular rivalry outside the scope of awareness. P NATL ACAD SCI USA 2016;113 (30):8352-8354 [PubMed]
Kooijmans RN. Inhibitory interneurons of macaque primary visual cortex. S.l.: s.n.; 2016. 214p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): Self MW)
Poort J, Self MW, van Vugt B, Malkki H, Roelfsema PR, Texture Segregation Causes Early Figure Enhancement and Later Ground Suppression in Areas V1 and V4 of Visual Cortex. CEREB CORTEX 2016;26 (10):3964-3976 [PubMed]
Roelfsema PR, de Lange FP, Early Visual Cortex as a Multiscale Cognitive Blackboard. ANNU REV VIS SCI 2016;2:131-151 [PubMed]
Self MW, Peters JC, Possel JK, Reithler J, Goebel R, Ris P, Jeurissen D, Reddy L, Claus S, Baayen JC, Roelfsema PR, The Effects of Context and Attention on Spiking Activity in Human Early Visual Cortex. PLOS BIOL 2016;14 (3):e1002420 [PubMed]
van der Togt C, Stănişor L, Pooresmaeili A, Albantakis L, Deco G, Roelfsema PR, Learning a New Selection Rule in Visual and Frontal Cortex. CEREB CORTEX 2016;26 (8):3611-3626 [PubMed]
Brosch T, Neumann H, Roelfsema PR, Reinforcement Learning of Linking and Tracing Contours in Recurrent Neural Networks. PLOS COMPUT BIOL 2015;11 (10):e1004489 [PubMed]
Dagnino B, Gariel-Mathis MA, Roelfsema PR, Microstimulation of area V4 has little effect on spatial attention and on perception of phosphenes evoked in area V1. J NEUROPHYSIOL 2015;113 (3):730-739 [PubMed]
Lorteije JAM, Zylberberg A, Ouellette BG, de Zeeuw CI, Sigman M, Roelfsema PR, The Formation of Hierarchical Decisions in the Visual Cortex. NEURON 2015;87 (6):1344-1356 [PubMed]
Nienborg H, Roelfsema PR, Belief states as a framework to explain extra-retinal influences in visual cortex. CURR OPIN NEUROBIOL 2015;32:45-52 [PubMed]
Reddy L, Poncet M, Self MW, Peters JC, Douw L, van Dellen E, Claus S, Reijneveld JC, Baayen JC, Roelfsema PR, Learning of anticipatory responses in single neurons of the human medial temporal lobe. NAT COMMUN 2015;6:8556 [PubMed]
Rombouts JO. Biologically Plausible Reinforcement Learning. S.l.: s.n.; 2015. 152p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): Bohte SM)
Rombouts JO, Bohte SM, Martinez-Trujillo J, Roelfsema PR, A learning rule that explains how rewards teach attention. VIS COGN 2015;23 (1-2):179-205
Rombouts JO, Bohte SM, Roelfsema PR, How attention can create synaptic tags for the learning of working memories in sequential tasks. PLOS COMPUT BIOL 2015;11 (3):e1004060 [PubMed]
Self MW, Mookhoek A, Tjalma N, Roelfsema PR, Contextual effects on perceived contrast: Figure-ground assignment and orientation contrast. J VISION 2015;15 (2):2 [PubMed]
Self MW, Roelfsema PR, Scene perception in early vision: Figure-ground organization in the lateral geniculate nucleus. P NATL ACAD SCI USA 2015;112 (22):6784-6785 [PubMed]
van Kerkoerle TJ. Feedforward and feedback processing in monkey visual cortex. S.l.: s.n.; 2015. 236p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): Self MW)
Kooijmans RN, Self MW, Wouterlood FG, Beliën JAM, Roelfsema PR, Inhibitory interneuron classes express complementary AMPA-receptor patterns in macaque primary visual cortex. J NEUROSCI 2014;34 (18):6303-6315 [PubMed]
Pooresmaeili A, Poort J, Roelfsema PR, Simultaneous selection by object-based attention in visual and frontal cortex. P NATL ACAD SCI USA 2014;111 (17):6467-6472 [PubMed]
Pooresmaeili A, Roelfsema PR, A growth-cone model for the spread of object-based attention during contour grouping. CURR BIOL 2014;24 (24):2869-2877 [PubMed]
Roelfsema PR, Treue S, Basic neuroscience research with nonhuman primates: a small but indispensable component of biomedical research. NEURON 2014;82 (6):1200-1204 [PubMed]
Self MW, Lorteije JAM, Vangeneugden J, van Beest EH, Grigore ME, Levelt CN, Heimel JA, Roelfsema PR, Orientation-tuned surround suppression in mouse visual cortex. J NEUROSCI 2014;34 (28):9290-9304 [PubMed]
van Kerkoerle T, Self MW, Dagnino B, Gariel-Mathis MA, Poort J, van der Togt C, Roelfsema PR, Alpha and gamma oscillations characterize feedback and feedforward processing in monkey visual cortex. P NATL ACAD SCI USA 2014;111 (40):14332-14341 [PubMed]
Zylberberg A, Roelfsema PR, Sigman M, Variance misperception explains illusions of confidence in simple perceptual decisions. CONSCIOUS COGN 2014;27:246-253 [PubMed]
Jeurissen D, Self MW, Roelfsema PR, Surface reconstruction, figure-ground modulation, and border-ownership. COGN NEUROSCI-UK 2013;4 (1):50-52 [PubMed]
Self MW, van Kerkoerle T, Supèr H, Roelfsema PR, Distinct roles of the cortical layers of area v1 in figure-ground segregation. CURR BIOL 2013;23 (21):2121-2129 [PubMed]
Stănişor L, van der Togt C, Pennartz CMA, Roelfsema PR, A unified selection signal for attention and reward in primary visual cortex. P NATL ACAD SCI USA 2013;110 (22):9136-9141 [PubMed]
Watson P, Korjoukov I, Vartak D, Roelfsema PR, Luminance contrast has little influence on the spread of object-based attention. VISION RES 2013;85:90-103 [PubMed]
Peters JC, Roelfsema PR, Goebel R, Task-Relevant and Accessory Items in Working Memory Have Opposite Effects on Activity in Extrastriate Cortex. J NEUROSCI 2012;32 (47):17003-17011 [PubMed]
Poort J. Attentional modulation of neural populations distributed across the visual cortical hierarchy. S.l.: s.n.; 2012. 185p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): )
Premereur E, Vanduffel W, Roelfsema PR, Janssen P, Frontal eye field microstimulation induces task-dependent gamma oscillations in the lateral intraparietal area. J NEUROPHYSIOL 2012;108 (5):1392-1402 [PubMed]
Self MW, Kooijmans RN, Supèr H, Lamme VA, Roelfsema PR, Different glutamate receptors convey feedforward and recurrent processing in macaque V1. P NATL ACAD SCI USA 2012;109 (27):11031-11036 [PubMed]
Self MW, Roelfsema PR, Optogenetics: Eye Movements at Light Speed. CURR BIOL 2012;22 (18):R804-R806 [PubMed]
Stănişor L. Coding of object significance and reward in the visual and frontal cortex. S.l.: s.n.; 2012. 167p. Proefschrift Free University, Amsterdam, Earth and Life Sciences. (Promotor(s): Roelfsema PR; copromotor(s): van der Togt C)
Zylberberg A, Ouellette B, Sigman M, Roelfsema PR, Decision Making during the Psychological Refractory Period. CURR BIOL 2012;22 (19):1795-1799 [PubMed]
Lefebvre C, Dell'acqua R, Roelfsema PR, Jolicœur P, Surfing the attentional waves during visual curve tracing: evidence from the sustained posterior contralateral negativity. PSYCHOPHYSIOLOGY 2011;48 (11):1510-1516 [PubMed]
Olivers CNL, Peters J, Houtkamp R, Roelfsema PR, Different states in visual working memory: when it guides attention and when it does not. TRENDS COGN SCI 2011;15 (7):327-334 [PubMed]
Roelfsema PR, Neuroscience. Attention--voluntary control of brain cells. SCIENCE 2011;332 (6037):1512-1513 [PubMed]
Roelfsema PR, Houtkamp R, Incremental grouping of image elements in vision. ATTEN PERCEPT PSYCHO 2011;73 (8):2542-2572 [PubMed]
van Someren EJW, van der Werf YD, Roelfsema PR, Mansvelder HD, da Silva FHL, Slow brain oscillations of sleep, resting state, and vigilance. PROG BRAIN RES 2011;193:3-15 [PubMed]
Wannig A, Stanisor L, Roelfsema PR, Automatic spread of attentional response modulation along Gestalt criteria in primary visual cortex. NAT NEUROSCI 2011;14 (10):1243-1244 [PubMed]
Zylberberg A, Dehaene S, Roelfsema PR, Sigman M, The human Turing machine: a neural framework for mental programs. TRENDS COGN SCI 2011;15 (7):293-300 [PubMed]
Houtkamp R, Roelfsema PR, Parallel and serial grouping of image elements in visual perception. J EXP PSYCHOL HUMAN 2010;36 (6):1443-1459 [PubMed]
Moro SI, Tolboom M, Khayat PS, Roelfsema PR, Neuronal activity in the visual cortex reveals the temporal order of cognitive operations. J NEUROSCI 2010;30 (48):16293-16303 [PubMed]
Pooresmaeili A, Herrero JL, Self MW, Roelfsema PR, Thiele A, Suppressive lateral interactions at parafoveal representations in primary visual cortex. J NEUROSCI 2010;30 (38):12745-12758 [PubMed]
Pooresmaeili A, Poort J, Thiele A, Roelfsema PR, Separable codes for attention and luminance contrast in the primary visual cortex. J NEUROSCI 2010;30 (38):12701-12711 [PubMed]
Roelfsema PR, Houtkamp R, Korjoukov I, Further evidence for the spread of attention during contour grouping: a reply to Crundall, Dewhurst, and Underwood (2008). ATTEN PERCEPT PSYCHO 2010;72 (3):849-862 [PubMed]
Roelfsema PR, van Ooyen A, Watanabe T, Perceptual learning rules based on reinforcers and attention. TRENDS COGN SCI 2010;14 (2):64-71 [PubMed]
Self MW, Roelfsema PR, A monocular, unconscious form of visual attention. J VISION 2010;10 (4):17.1-1723 [PubMed]
Zylberberg A, Fernández Slezak D, Roelfsema PR, Dehaene S, Sigman M, The brain's router: a cortical network model of serial processing in the primate brain. PLOS COMPUT BIOL 2010;6 (4):e1000765 [PubMed]
Ekstrom LB, Roelfsema PR, Arsenault JT, Kolster H, Vanduffel W, Modulation of the contrast response function by electrical microstimulation of the macaque frontal eye field. J NEUROSCI 2009;29 (34):10683-10694 [PubMed]
Fecteau JH, Korjoukov I, Roelfsema PR, Location and color biases have different influences on selective attention. VISION RES 2009;49 (9):996-1005 [PubMed]
Houtkamp R, Roelfsema PR, Matching of visual input to only one item at any one time. PSYCHOL RES-PSYCH FO 2009;73 (3):317-326 [PubMed]
Khayat PS, Pooresmaeili A, Roelfsema PR, Time course of attentional modulation in the frontal eye field during curve tracing. J NEUROPHYSIOL 2009;101 (4):1813-1822 [PubMed]
Peters JC, Goebel R, Roelfsema PR, Remembered but unused: the accessory items in working memory that do not guide attention. J COGNITIVE NEUROSCI 2009;21 (6):1081-1091 [PubMed]
Poort J, Roelfsema PR, Noise correlations have little influence on the coding of selective attention in area V1. CEREB CORTEX 2009;19 (3):543-553 [PubMed]
Thiele A, Pooresmaeili A, Delicato LS, Herrero JL, Roelfsema PR, Additive effects of attention and stimulus contrast in primary visual cortex. CEREB CORTEX 2009;19 (12):2970-2981 [PubMed]
Ekstrom LB, Roelfsema PR, Arsenault JT, Bonmassar G, Vanduffel W, Bottom-up dependent gating of frontal signals in early visual cortex. SCIENCE 2008;321 (5887):414-417 [PubMed]
Jehee JFM, Lamme VAF, Roelfsema PR, Boundary assignment in a recurrent network architecture. VISION RES 2007;47 (9):1153-1165 [PubMed]
Jehee JFM, Roelfsema PR, Deco G, Murre JMJ, Lamme VAF, Interactions between higher and lower visual areas improve shape selectivity of higher level neurons-explaining crowding phenomena. BRAIN RES 2007;1157:167-176 [PubMed]
Roelfsema PR, Tolboom M, Khayat PS, Different processing phases for features, figures, and selective attention in the primary visual cortex. NEURON 2007;56 (5):785-792 [PubMed]
Houtkamp R, Roelfsema PR, The effect of items in working memory on the deployment of attention and the eyes during visual search. J EXP PSYCHOL HUMAN 2006;32 (2):423-442 [PubMed]
Khayat PS, Spekreijse H, Roelfsema PR, Attention lights up new object representations before the old ones fade away. J NEUROSCI 2006;26 (1):138-142 [PubMed]
Roelfsema PR, Cortical algorithms for perceptual grouping. ANNU REV NEUROSCI 2006;29:203-227 [PubMed]
van Ooyen A, Roelfsema PR, Envisioning the reward. NEURON 2006;50 (2):188-190 [PubMed]
Roelfsema PR, Elemental operations in vision. TRENDS COGN SCI 2005;9 (5):226-233 [PubMed]
Roelfsema PR, van Ooyen A, Attention-gated reinforcement learning of internal representations for classification. NEURAL COMPUT 2005;17 (10):2176-2214 [PubMed]
Supèr H, Roelfsema PR, Chronic multiunit recordings in behaving animals: advantages and limitations. PROG BRAIN RES 2005;147:263-282 [PubMed]
Khayat PS. Attention and eye movements during contour mapping. S.l.: s.n.; 2004. 135p. ISBN --- [UvA Dissertations Online] Proefschrift Universiteit van Amsterdam. (Promotor(s): Spekreijse H, Roelfsema PR; copromotor(s): )
Khayat PS, Spekreijse H, Roelfsema PR, Correlates of transsaccadic integration in the primary visual cortex of the monkey. P NATL ACAD SCI USA 2004;101 (34):12712-12717 [PubMed]
Khayat PS, Spekreijse H, Roelfsema PR, Visual information transfer across eye movements in the monkey. VISION RES 2004;44 (25):2901-2917 [PubMed]
Roelfsema PR, Lamme VAF, Spekreijse H, Synchrony and covariation of firing rates in the primary visual cortex during contour grouping. NAT NEUROSCI 2004;7 (9):982-991 [PubMed]
Houtkamp R, Spekreijse H, Roelfsema PR, A gradual spread of attention during mental curve tracing. PERCEPT PSYCHOPHYS 2003;65 (7):1136-1144 [PubMed]
Roelfsema PR, Khayat PS, Spekreijse H, Subtask sequencing in the primary visual cortex. P NATL ACAD SCI USA 2003;100 (9):5467-5472 [PubMed]
Roelfsema PR, Super H, Why do schizophrenic patients hallucinate?. BEHAV BRAIN SCI 2003;26 (1):101-+
Fries P, Schröder JH, Roelfsema PR, Singer W, Engel AK, Oscillatory neuronal synchronization in primary visual cortex as a correlate of stimulus selection. J NEUROSCI 2002;22 (9):3739-3754 [PubMed]
Roelfsema PR, Do neurons predict the future?. SCIENCE 2002;295 (5553):227 [PubMed]
Roelfsema PR, Lamme VAF, Spekreijse H, Bosch H, Figure-ground segregation in a recurrent network architecture. J COGNITIVE NEUROSCI 2002;14 (4):525-537 [PubMed]
Schröder JH, Fries P, Roelfsema PR, Singer W, Engel AK, Ocular dominance in extrastriate cortex of strabismic amblyopic cats. VISION RES 2002;42 (1):29-39 [PubMed]
Roelfsema PR, Spekreijse H, The representation of erroneously perceived stimuli in the primary visual cortex. NEURON 2001;31 (5):853-863 [PubMed]
Scholte HS, Spekreijse H, Roelfsema PR, The spatial profile of visual attention in mental curve tracing. VISION RES 2001;41 (20):2569-2580 [PubMed]
Bohte SM, Spekreijse H, Roelfsema PR, The effects of pair-wise and higher order correlations on the firing rate of a post-synaptic neuron. NEURAL COMPUT 2000;12 (1):153-179 [PubMed]
Lamme VA, Roelfsema PR, The distinct modes of vision offered by feedforward and recurrent processing. TRENDS NEUROSCI 2000;23 (11):571-579 [PubMed]
Lamme VA, Supèr H, Landman R, Roelfsema PR, Spekreijse H, The role of primary visual cortex (V1) in visual awareness. VISION RES 2000;40 (10-12):1507-1521 [PubMed]
Roelfsema PR, Lamme VA, Spekreijse H, The implementation of visual routines. VISION RES 2000;40 (10-12):1385-1411 [PubMed]
Roelfsema PR, Scholte HS, Spekreijse H, Temporal constraints on the grouping of contour segments into spatially extended objects. VISION RES 1999;39 (8):1509-1529 [PubMed]
Roelfsema PR, Solutions for the binding problem. Z NATURFORSCH [C] 1998;53 (7-8):691-715 [PubMed]
Roelfsema PR, Lamme VA, Spekreijse H, Object-based attention in the primary visual cortex of the macaque monkey. NATURE 1998;395 (6700):376-381 [PubMed]
Roelfsema PR, Singer W, Detecting connectedness. CEREB CORTEX 1998;8 (5):385-396 [PubMed]
Engel AK, Roelfsema PR, Fries P, Brecht M, Singer W, Role of the temporal domain for response selection and perceptual binding. CEREB CORTEX 1997;7 (6):571-582 [PubMed]
Fries P, Roelfsema PR, Engel AK, König P, Singer W, Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry. P NATL ACAD SCI USA 1997;94 (23):12699-12704 [PubMed]
Roelfsema PR, Engel AK, König P, Singer W, Visuomotor integration is associated with zero time-lag synchronization among cortical areas. NATURE 1997;385 (6612):157-161 [PubMed]
Singer W, Engel AK, Kreiter AK, Munk MH, Neuenschwander S, Roelfsema PR, Neuronal assemblies: necessity, signature and detectability. TRENDS COGN SCI 1997;1 (7):252-261 [PubMed]
Munk MH, Roelfsema PR, König P, Engel AK, Singer W, Role of reticular activation in the modulation of intracortical synchronization. SCIENCE 1996;272 (5259):271-274 [PubMed]
Singer W, Kreiter AK, Engel AK, Fries P, Roelfsema PR, Volgushev M, Precise timing of neuronal discharges within and across cortical areas: implications for synaptic transmission. J PHYSIOL-PARIS 1996;90 (3-4):221-222 [PubMed]
König P, Engel AK, Roelfsema PR, Singer W, How precise is neuronal synchronization?. NEURAL COMPUT 1995;7 (3):469-485 [PubMed]
Roelfsema PR, König P, Engel AK, Sireteanu R, Singer W, Reduced synchronization in the visual cortex of cats with strabismic amblyopia. EUR J NEUROSCI 1994;6 (11):1645-1655 [PubMed]
Key publications

Lorteije JAM, Zylberberg A, Ouellette BG, de Zeeuw CI, Sigman M, Roelfsema PR, The Formation of Hierarchical Decisions in the Visual Cortex. NEURON 2015;87 (6):1344-1356 [PubMed]
Wannig A, Stanisor L, Roelfsema PR, Automatic spread of attentional response modulation along Gestalt criteria in primary visual cortex. NAT NEUROSCI 2011;14 (10):1243-1244 [PubMed]
Roelfsema PR, Neuroscience. Attention--voluntary control of brain cells. SCIENCE 2011;332 (6037):1512-1513 [PubMed]
van Kerkoerle T, Self MW, Dagnino B, Gariel-Mathis MA, Poort J, van der Togt C, Roelfsema PR, Alpha and gamma oscillations characterize feedback and feedforward processing in monkey visual cortex. P NATL ACAD SCI USA 2014;111 (40):14332-14341 [PubMed]
Stănişor L, van der Togt C, Pennartz CMA, Roelfsema PR, A unified selection signal for attention and reward in primary visual cortex. P NATL ACAD SCI USA 2013;110 (22):9136-9141 [PubMed]


All Publications

Research programmes

Neurobiology of brain stimulation

Faculty
Prof. dr. P.R. Roelfsema PhD (NIN)

Postdocs
Dr. D. 14 different people (NIN)

Prof. dr. D.A.J.P. Denys (Deep Brain Stimulation and Obsessive-Compulsive Disorders)

Other research related activities
  • None reported
Current research funding
  • None reported