Neurosurgery

Hiroyuki Oya, MD, PhD

Portrait

Associate Professor of Neurosurgery

Contact Information

Office: 1624 JCP
Iowa City, IA 52242

Email: hiroyuki-oya@uiowa.edu

Education

MD, Tottori University School of Medicine

Residency, Neurosurgery, Yokohama City University Hospital
Fellowship, Neurosurgery, Yokohama City University Hospital
Post Doctorate, Neurology/Neurosurgery, University of Iowa Carver College of Medicine

Licensure and Certifications

Iowa Medical License, Iowa Board of Medicine
Japan Medical License
Board Certificate: Japan Neurosurgery Society, Japan Neurosurgical Society

Research Summary

Electrophysiology; Behavioral study of learning and memory; Plasticity of human brain functions

All Publications

Nourski K, Steinschneider M, Oya H, Kawasaki H, Howard 3rd M.  Modulation of response patterns in human auditory cortex during a target detection task: An intracranial electrophysiology study..  Int J Psychophysiol.  2015 February. 95(2):191-201.
[PubMed]

Abel T, Rhone A, Nourski K, Kawasaki H, Oya H, Griffiths T, Howard 3rd M, Tranel D.  Direct physiologic evidence of a heteromodal convergence region for proper naming in human left anterior temporal lobe.  J Neurosci.  2015 January 28. 35(4):1513-20.
[PubMed]

Grosland N, Gillies G, Shurig R, Stoner K, Viljoen S, Dalm B, Oya H, Fredericks D, Gibson-Corley K, Reddy C, Wilson S, Howard III M.  Finite-Element Study of the Performance Characteristics of an Intradural Spinal Cord Stimulator .  J Med Devices.  2014 October 14. 8(4):041012.

Nourski K, Steinschneider M, Oya H, Kawasaki H, Jones R, Howard M.  Spectral organization of the human lateral superior temporal gyrus revealed by intracranial recordings.  Cereb Cortex.  2014 February. 24(2):340-52.
[PubMed]

Huang Q, Oya H, Flouty O, Reddy C, Howard 3rd M, Gillies G, Utz M.  Comparison of spinal cord stimulation profiles from intra- and extradural electrode arrangements by finite element modelling.  Med Biol Eng Comput.  2014. 52(6):531-8.
[PubMed]

Steinschneider M, Nourski K, Rhone A, Kawasaki H, Oya H, Howard 3rd M.  ential activation of human core, non-core and auditory-related cortex during speech categorization tasks as revealed by intracranial recordings.  Front Neurosci.  2014. 11(8):240.
[PubMed]

Gibson-Corley K, Flouty O, Oya H, Gillies G, Howard M.  Postsurgical pathologies associated with intradural electrical stimulation in the central nervous system: design implications for a new clinical device.  Biomed Res Int.  2014. 
[PubMed]

Dalm B, Viljoen S, Dahdaleh N, Reddy C, Brennan T, Oya H, Wilson S, Safayi S, Jeffery N, Gillies G, Howard M.  Revisiting intradural spinal cord stimulation: an introduction to a novel intradural spinal cord stimulation device.  Innovative Neurosurgery.  2014. 21(1-4):13-20.

Abel T, Rhone A, Nourski K, Granner M, Oya H, Griffiths T, Tranel D, Kawasaki H, Howard M.  Mapping the temporal pole with a specialized electrode array: technique and preliminary results.  Physiol Meas.  2014 January. 35(3):323-37.
[PubMed]

Viljoen S, Oya H, Reddy C, Dalm B, Shurig R, Gillies G, Howard M.  Apparatus for simulating dynamic interactions between the spinal cord and soft-coupled intradural implants.  Rev Sci Instrum.  2013 November. 84(11):114303.
[PubMed]

Oya H, Nourski K, Rhone E, Kawasaki H, Howard M.  Non-linear dependency between spiking response and gamma-band power of local field potentials in the human auditory cortex.  BMC Neurosci.  2013 July 8. 14(Suppl 1):P175.

Nourski K, Etler C, Brugge J, Oya H, Kawasaki H, Reale R, Abbas P, Brown C, Howard M.  Direct recordings from the auditory cortex in a cochlear implant user.  J Assoc Res Otolaryngol.  2013 June. 14(3):435-50.
[PubMed]

Ai L, Oya H, Howard M, Xiong J.  Functional MRI detectional of hemodynamic response of repeated median nerve stimulation.  Magn Reson Imaging.  2013 May. 21(4):550-4.
[PubMed]

Greenlee J, Behroozmand R, Larson C, Jackson A, Chen F, Hansen D, Oya H, Kawasaki H, Howard M.  Sensory-motor interactions for vocal pitch monitoring in non-primary human auditory cortex.  PLoS One.  2013 April. 8(4):e60783.
[PubMed]

Nourski K, Brugge J, Reale R, Kovach C, Oya H, Kawasaki H, Jenison R, Howard M.  Coding of repetitive transients by auditory cortex on posterolateral superior temporal gyrus: an intracranial electrophysiological study.  J Neurophysiol.  2013 March. 109(5):1283-95.
[PubMed]

Flouty O, Oya H, Kawasaki H, Reddy C, Fredericks D, Gibson-Corley K, Jeffrey N, Gillies G, Howard M.  Intracranial somatosensory responses with direct spinal cord stimulation in anesthetized sheep.  PLoS One.  2013 February. 8(2):e56266.
[PubMed]

Abel T, Flouty O, Kawasaki H, Oya H, Howard M.  Category- and entity-specific activation of neuronal populations in the temporal pole in response to naming proper nouns.  J Neurosurg.  2013. 119(2):A545-6.

Abel T, Flouty O, Oya H, Kawasaki H, Reddy C, Howard M.  Cortical responses to intra- and extra-dural electrical stimulation of mammalian spinal cord.  J Neurosurg.  2013. 119(2):A558.

Garrell P, Bakken H, Greenlee J, Volkov I, Reale R, Oya H, Kawasaki H, Howard M, Brugge J.  Functional Connection Between Posterior Superior Temporal Gyrus and Ventrolateral Prefrontal Cortex in Human.  Cereb Cortex.  2013. 23(10):2309-2321.

Oya H, Safayi S, Jeffery N, Viljoen S, Reddy C, Dalm B, Kanwal J, Gillies G, Howard M.  Soft-coupling suspension system for an intradural spinal cord stimulator: Biophysical performance characteristics.  J Appl Phys.  2013. 114(16):164701-7.

Flouty O, Oya H, Kawasaki H, Wilson S, Reddy C, Jeffrey N, Brennan T, Gibson-Corley K, Utz M, Gillies G, Howard M.  A new device concept for directly modulating spinal cord pathways: initial in vivo experimental results.  Physiol Meas.  2012 December. 33(12):2003-15.
[PubMed]

Gibson-Coley K, Oya H, Flouty O, Fredericks D, Jeffrey N, Gillies G, Howard M.  Ovine tests of novel spinal cord neuromodulator and dentate ligament fixation method.  J Invest Surg.  2012 December. 25(6):366-74.
[PubMed]

Oya H, Howard M, Shurig R, Gillies G.  Spinal canal surrogate for testing intradural implants.  J Med Eng Technol.  2012 November. 36(8):407-10.
[PubMed]

Nourski K, Steinschneider M, Oya H, Kawasaki H, Jones R, Howard M.  Spectral organization of the human lateral superior temporal gyrus revealed by intracranial recordings.  Cereb Cortex.  2012 October. 
[PubMed]

Kawasaki H, Tsuchiya N, Kovach C, Nourski K, Oya H, Howard M, Adolphs R.  Processing of facial emotion in the human fusiform gyrus.  J Cogn Neurosci.  2012 June. 24(6):1358-70.
[PubMed]

Oya H, Reddy C, Dahdaleh N, Wilson S, Howard M, Jeffery N, Utz M, Gillies G.  Applier tool for intradural spinal cord implants.  J Med Eng Technol.  2012 April. 36(3):169-73.
[PubMed]

Steinschneider M, Nourski K, Kawasaki H, Oya H, Brugge J, Howard M.  Intracranial study of speech-elicited activity on the human posterolateral temporal gyrus.  Cereb Cortex.  2011 October. 21(10):2332-47.
[PubMed]

Kumar S, Sedley W, Nourski K, Kawasaki H, Oya H, Patterson R, Howard M, Friston K, Griffith T.  Predictive Coding and Pitch Processing in the Auditory Cortex.  J Cogn Neurosci.  2011 October. 23(10):3084-94.
[PubMed]

Greenlee J, Jackson A, Chen F, Larson C, Oya H, Kawasaki H, Chen H, Howard M.  Human Auditory Cortical Activation during Self-Vocalization.  PLoS One.  2011 March. 6(3):e14744.
[PubMed]

Kovach C, Tsuchiya N, Kawasaki H, Oya H, Howard M, Adolphs R.  Manifestation of ocular-muscle EMG contamination in human intracranial recordings.  Neuroimage.  2011 January. 54(1):213-33.
[PubMed]

Jenison R, Rangel A, Oya H, Kawasaki H, Howard M.  Value encoding in single neurons in the human amygdala during decision making.  J Neurosci.  2011 January. 31(1):331-8.
[PubMed]

Kitagawa H, Fujiki R, Yoshimura K, Oya H, Kato S.  Williams syndrome is an epigenome-regulator disease.  Endocr J.  2011 January. 58(2):77-85.
[PubMed]

Reddy C, Dahdaleh N, Albert G, Chen F, Hansen D, Nourski K, Kawasaki H, Oya H, Howard M.  A method for placing Heschl gyrus depth electrodes.  J Neurosurgery.  2010 June. 112(6):1301-7.
[PubMed]

Griffith T, Kumar S, Sedley W, Nourski K, Kawasaki H, Oya H, Patterson R, Brugge J, Howard M.  Direct recordings of pitch responses from human auditory cortex.  Curr Biol.  2010 June. 20(12):1128-32.
[PubMed]

Dahdaleh N, Lindley T, Kirby P, Oya H, Howard M.  A "neurosurgical crisis" of sickle cell disease.  J Neurosurgery Pediatr.  2009 December. 4(6):532-5.
[PubMed]

Nourski K, Reale R, Oya H, Kawasaki H, Kovach C, Chen H, Howard M, Brugge J.  Temporal envelope of time-compressed speech represented in the human auditory cortex.  J Neurosci.  2009 December. 29(49):15564-75.
[PubMed]

Brugge J, Nourski K, Oya H, Reale R, Kawasaki H, Steinschneider M, Howard M.  Coding of repetitive transients by auditory cortex on Heschl's gyrus.  J Neurophysiology.  2009 October. 102(4):2358-74.
[PubMed]

Reddy C, Reddy G, Kawasaki H, Oya H, Miller L, Howard M.  Decoding movement-related cortical potentials from electrocorticography.  Neurosurg Focus.  2009 July. 27(1):E11.
[PubMed]

Oya H, Kawasaki H, Dahdaleh N, Wemmie J, Howard M.  Stereotactic atlas-based depth electrode localization in the human amygdala.  Stereotact Funct Neurosurg.  2009 June. 87(4):219-28.
[PubMed]

Tuschiya N, Kawasaki H, Oya H, Howard M, Adolphs R.  Decoding face information in time, frequency and space from direct intracranial recordings of the human brain.  PLoS One.  2008 December. 3(12):e3892.
[PubMed]

Brugge J, Volkov I, Oya H, Kawasaki H, Reale R, Fenoy A, Steinschneider M, Howard M.  Functional localization of auditory cortical fields of human: click-train simulation.  Hear Res.  2008 April. 238(1-2):12-24.
[PubMed]

Greenlee J, Oya H, Kawasaki H, Volkov I, Severson M, Howard M, Brugge J.  Functional connections within the human inferior frontal gyrus.  J Comp Neurol.  2007 August. 503(4):550-9.
[PubMed]

Oya H, Poon P, Brugge J, Reale R, Kawasaki H, Volkov I, Howard M.  Functional connections between auditory cortical fields in humans by Granger causality analysis of intra-cranial evoked potentials to sounds: comparison of two methods.  Biosystems.  2007 May. 89(1-3):198-207.
[PubMed]

Reale R, Galvert G, Thesen T, Jenison R, Kawasaki H, Oya H, Howard M, Brugge J.  Auditory-visual processing represented in the human superior temporal gyrus.  Neuroscience.  2007 March. 145(1):162-84.
[PubMed]

Kawasaki H, Adolphs R, Oya H, Kovach C, Damasio H, Kaufman O, Howard M.  Analysis of single-unit responses to emotional scenes in human ventromedial prefrontal cortex.  J Cogn Neurosci.  2005 October. 17(10):1509-18.
[PubMed]

Oya H, Adolphs R, Kawasaki H, Bechara A, Damasio A, Howard M.  Electrophysiological correlates of reward prediction error recorded in the human prefrontal cortex.  Proc Natl Acad Sci U S A.  2005 June. 102(23):8351-6.
[PubMed]

Steinschneider M, Volko I, Fishman Y, Oya H, Arezzo J, Howard M.  Intracortical responses in human and monkey primary auditory cortex support a temporal processing mechanism for encoding of the voice onset time phonetic parameter.  Cereb Cortex.  2005 February. 15(2):170-86.
[PubMed]

Greenlee J, Oya H, Kawasaki H, Volkov I, Kaufman O, Covach C, Howard M, Brugge J.  A functional connection between inferior frontal gyrus and orofacial motor cortex in human.  J Neurophysiol.  2004 August. 92(2):1153-64.
[PubMed]

Bakken H, Kawasaki H, Oya H, Greenlee J, Howard M.  A device for cooling localized regions of human cerebral cortex. Technical note.  J Neurosurg.  2003 September. 99(3):604-8.
[PubMed]

Oya H, Kawasaki H, Howard M, Adolphs R.  Electrophysiological responses in the human amygdala discriminate emotion categories of complex visual stimuli.  J Neurosci.  2002 November. 22(21):9502-12.
[PubMed]

Greenlee J, Behroozmand R, Larson C, Jackson A, Chen F, Hansen D, Oya H, Kawasaki H, Howard M.  Sensory-motor interactions for vocal pitch monitoring in non-primary human auditory cortex.  PLoS One.  8(4):e60783.

Date Last Modified: 08/04/2015 - 09:28:35