Spencer Sterling Kellis

Title(s)Research Assistant Professor of Neurological Surgery
AddressMCH B-51
Health Sciences Campus
Los Angeles CA 90089
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    1. Neuropathological effects of chronically implanted, intracortical microelectrodes in a tetraplegic patient. J Neural Eng. 2021 07 27; 18(4). Szymanski LJ, Kellis S, Liu CY, Jones KT, Andersen RA, Commins D, Lee B, McCreery DB, Miller CA. PMID: 34314384.
      View in: PubMed   Mentions:    Fields:    Translation:HumansAnimals
    2. Amygdaloid theta-band power increases during conflict processing in humans. J Clin Neurosci. 2021 Sep; 91:183-192. Tang AM, Chen KH, Gogia AS, Del Campo-Vera RM, Sebastian R, Gilbert ZD, Lee Y, Nune G, Liu CY, Kellis S, Lee B. PMID: 34373025.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    3. Neuromodulation in Beta-Band Power Between Movement Execution and Inhibition in the Human Hippocampus. Neuromodulation. 2021 Jul 05. Del Campo-Vera RM, Tang AM, Gogia AS, Chen KH, Sebastian R, Gilbert ZD, Nune G, Liu CY, Kellis S, Lee B. PMID: 34224647.
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    4. Hippocampal and Orbitofrontal Theta Band Coherence Diminishes During Conflict Resolution. World Neurosurg. 2021 08; 152:e32-e44. Tang AM, Chen KH, Del Campo-Vera RM, Sebastian R, Gogia AS, Nune G, Liu CY, Kellis S, Lee B. PMID: 33872837.
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    5. The Neurophysiological Representation of Imagined Somatosensory Percepts in Human Cortex. J Neurosci. 2021 03 10; 41(10):2177-2185. Bashford L, Rosenthal I, Kellis S, Pejsa K, Kramer D, Lee B, Liu C, Andersen RA. PMID: 33483431.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    6. The human primary somatosensory cortex encodes imagined movement in the absence of sensory information. Commun Biol. 2020 12 11; 3(1):757. Jafari M, Aflalo T, Chivukula S, Kellis SS, Salas MA, Norman SL, Pejsa K, Liu CY, Andersen RA. PMID: 33311578.
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    7. SpikeDeep-Classifier: A deep-learning based fully automatic offline spike sorting algorithm. J Neural Eng. 2020 Nov 09. Saif-Ur-Rehman M, Ali O, Dyck S, Lienkämper R, Metzler M, Parpaley Y, Wellmer J, Liu C, Lee B, Kellis S, Andersen RA, Iossifidis I, Glasmachers T, Klaes C. PMID: 33166944.
      View in: PubMed   Mentions: 1     Fields:    
    8. Beta-band modulation in the human hippocampus during a conflict response task. J Neural Eng. 2020 Oct 15. Chen KH, Gogia AS, Tang A, Martin Del Campo-Vera R, Sebastian R, Nune G, Wong J, Liu C, Kellis S, Lee B. PMID: 33059331.
      View in: PubMed   Mentions: 2     Fields:    
    9. Gamma-band modulation in the human amygdala during reaching movements. Neurosurg Focus. 2020 07; 49(1):E4. Gogia AS, Martin Del Campo-Vera R, Chen KH, Sebastian R, Nune G, Kramer DR, Lee MB, Tafreshi AR, Barbaro MF, Liu CY, Kellis S, Lee B. PMID: 32610288.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    10. Thermal Analysis of a Skull Implant in Brain-Computer Interfaces. Annu Int Conf IEEE Eng Med Biol Soc. 2020 07; 2020:3066-3069. Serrano-Amenos C, Hu F, Wang PT, Kellis S, Andersen RA, Liu CY, Heydari P, Do AH, Nenadic Z. PMID: 33018652.
      View in: PubMed   Mentions:
    11. A Prototype of a Fully-Implantable Charge-Balanced Artificial Sensory Stimulator for Bi-directional Brain-Computer-Interface (BD-BCI). Annu Int Conf IEEE Eng Med Biol Soc. 2020 07; 2020:3083-3085. Sohn WJ, Wang PT, Kellis S, Andersen RA, Liu CY, Heydari P, Nenadic Z, Do AH. PMID: 33018656.
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    12. Beta-band power modulation in the human hippocampus during a reaching task. J Neural Eng. 2020 06 12; 17(3):036022. Del Campo-Vera RM, Gogia AS, Chen KH, Sebastian R, Kramer DR, Lee MB, Peng T, Tafreshi A, Barbaro MF, Liu CY, Kellis S, Lee B. PMID: 32413878.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    13. Comparison of Intraoperative 3-Dimensional Fluoroscopy With Standard Computed Tomography for Stereotactic Frame Registration. Oper Neurosurg (Hagerstown). 2020 06 01; 18(6):698-709. Peng T, Kramer DR, Lee MB, Barbaro MF, Ding L, Liu CY, Kellis S, Lee B. PMID: 31584102.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    14. Optimal artifact suppression in simultaneous electrocorticography stimulation and recording for bi-directional brain-computer interface applications. J Neural Eng. 2020 04 29; 17(2):026038. Pu H, Lim J, Kellis S, Liu CY, Andersen RA, Do AH, Heydari P, Nenadic Z. PMID: 32208379.
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    15. A Phantom Study of the Spatial Precision and Accuracy of Stereotactic Localization Using Computed Tomography Imaging with the Leksell Stereotactic System. World Neurosurg. 2020 07; 139:e297-e307. Tafreshi AR, Peng T, Yu C, Kramer DR, Gogia AS, Lee MB, Barbaro MF, Sebastian R, Del Campo-Vera RM, Chen KH, Kellis SS, Lee B. PMID: 32298832.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    16. Mapping of primary somatosensory cortex of the hand area using a high-density electrocorticography grid for closed-loop brain computer interface. J Neural Eng. 2020 Mar 04. Kramer DR, Lee MB, Barbaro M, Gogia AS, Peng T, Liu C, Kellis S, Lee B. PMID: 32131064.
      View in: PubMed   Mentions: 1     Fields:    
    17. Utility and lower limits of frequency detection in surface electrode stimulation for somatosensory brain-computer interface in humans. Neurosurg Focus. 2020 02 01; 48(2):E2. Kramer DR, Lamorie-Foote K, Barbaro M, Lee MB, Peng T, Gogia A, Nune G, Liu CY, Kellis SS, Lee B. PMID: 32006952.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    18. From thought to action: The brain-machine interface in posterior parietal cortex. Proc Natl Acad Sci U S A. 2019 Dec 23. Andersen RA, Aflalo T, Kellis S. PMID: 31871144.
      View in: PubMed   Mentions: 3     Fields:    
    19. Functional Frequency Discrimination From Cortical Somatosensory Stimulation in Humans. Front Neurosci. 2019; 13:832. Kramer DR, Lamorie-Foote K, Barbaro M, Lee M, Peng T, Gogia A, Liu CY, Kellis SS, Lee B. PMID: 31440133.
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    20. Clinical neuroprosthetics: Today and tomorrow. J Clin Neurosci. 2019 Oct; 68:13-19. Lee MB, Kramer DR, Peng T, Barbaro MF, Liu CY, Kellis S, Lee B. PMID: 31375306.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    21. SpikeDeeptector: a deep-learning based method for detection of neural spiking activity. J Neural Eng. 2019 07 23; 16(5):056003. Saif-Ur-Rehman M, Lienkämper R, Parpaley Y, Wellmer J, Liu C, Lee B, Kellis S, Andersen R, Iossifidis I, Glasmachers T, Klaes C. PMID: 31042684.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansCellsCTClinical Trials
    22. Directional tuning during reach planning in the supramarginal gyrus using local field potentials. J Clin Neurosci. 2019 Jun; 64:214-219. Barbaro MF, Kramer DR, Nune G, Lee MB, Peng T, Liu CY, Kellis S, Lee B. PMID: 31023574.
      View in: PubMed   Mentions:    Fields:    Translation:HumansCells
    23. Electrocorticographic changes in field potentials following natural somatosensory percepts in humans. Exp Brain Res. 2019 May; 237(5):1155-1167. Kramer DR, Barbaro MF, Lee M, Peng T, Nune G, Liu CY, Kellis S, Lee B. PMID: 30796470.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    24. Brain-Computer Interfaces in Quadriplegic Patients. Neurosurg Clin N Am. 2019 Apr; 30(2):275-281. Lee MB, Kramer DR, Peng T, Barbaro MF, Liu CY, Kellis S, Lee B. PMID: 30898278.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    25. Technical considerations for generating somatosensation via cortical stimulation in a closed-loop sensory/motor brain-computer interface system in humans. J Clin Neurosci. 2019 May; 63:116-121. Kramer DR, Kellis S, Barbaro M, Salas MA, Nune G, Liu CY, Andersen RA, Lee B. PMID: 30711286.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    26. Engineering Artificial Somatosensation Through Cortical Stimulation in Humans. Front Syst Neurosci. 2018; 12:24. Lee B, Kramer D, Armenta Salas M, Kellis S, Brown D, Dobreva T, Klaes C, Heck C, Liu C, Andersen RA. PMID: 29915532.
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    27. Utilizing Light-field Imaging Technology in Neurosurgery. Cureus. 2018 Apr 10; 10(4):e2459. Chen BR, Buchanan IA, Kellis S, Kramer D, Ohiorhenuan I, Blumenfeld Z, Grisafe Ii DJ, Barbaro MF, Gogia AS, Lu JY, Chen BB, Lee B. PMID: 29888163.
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    28. Proprioceptive and cutaneous sensations in humans elicited by intracortical microstimulation. Elife. 2018 04 10; 7. Armenta Salas M, Bashford L, Kellis S, Jafari M, Jo H, Kramer D, Shanfield K, Pejsa K, Lee B, Liu CY, Andersen RA. PMID: 29633714.
      View in: PubMed   Mentions: 28     Fields:    Translation:Humans
    29. Non ictal onset zone: A window to ictal dynamics. Epilepsy Behav Case Rep. 2017; 8:123-127. Afra P, Hanrahan SJ, Kellis SS, House P. PMID: 29204348.
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    30. Multivariate regression methods for estimating velocity of ictal discharges from human microelectrode recordings. J Neural Eng. 2017 08; 14(4):044001. Liou JY, Smith EH, Bateman LM, McKhann GM, Goodman RR, Greger B, Davis TS, Kellis SS, House PA, Schevon CA. PMID: 28332484.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    31. The ictal wavefront is the spatiotemporal source of discharges during spontaneous human seizures. Nat Commun. 2016 Mar 29; 7:11098. Smith EH, Liou JY, Davis TS, Merricks EM, Kellis SS, Weiss SA, Greger B, House PA, McKhann GM, Goodman RR, Emerson RG, Bateman LM, Trevelyan AJ, Schevon CA. PMID: 27020798.
      View in: PubMed   Mentions: 43     Fields:    Translation:Humans
    32. Hand Shape Representations in the Human Posterior Parietal Cortex. J Neurosci. 2015 Nov 18; 35(46):15466-76. Klaes C, Kellis S, Aflalo T, Lee B, Pejsa K, Shanfield K, Hayes-Jackson S, Aisen M, Heck C, Liu C, Andersen RA. PMID: 26586832.
      View in: PubMed   Mentions: 17     Fields:    Translation:HumansCells
    33. Multi-scale analysis of neural activity in humans: Implications for micro-scale electrocorticography. Clin Neurophysiol. 2016 Jan; 127(1):591-601. Kellis S, Sorensen L, Darvas F, Sayres C, O'Neill K, Brown RB, House P, Ojemann J, Greger B. PMID: 26138146.
      View in: PubMed   Mentions: 23     Fields:    Translation:Humans
    34. Neurophysiology. Decoding motor imagery from the posterior parietal cortex of a tetraplegic human. Science. 2015 May 22; 348(6237):906-10. Aflalo T, Kellis S, Klaes C, Lee B, Shi Y, Pejsa K, Shanfield K, Hayes-Jackson S, Aisen M, Heck C, Liu C, Andersen RA. PMID: 25999506.
      View in: PubMed   Mentions: 118     Fields:    Translation:HumansCells
    35. Parietal neural prosthetic control of a computer cursor in a graphical-user-interface task. J Neural Eng. 2014 Dec; 11(6):066014. Revechkis B, Aflalo TN, Kellis S, Pouratian N, Andersen RA. PMID: 25394419.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    36. Toward more versatile and intuitive cortical brain-machine interfaces. Curr Biol. 2014 Sep 22; 24(18):R885-R897. Andersen RA, Kellis S, Klaes C, Aflalo T. PMID: 25247368.
      View in: PubMed   Mentions: 26     Fields:    Translation:Humans
    37. A cognitive neuroprosthetic that uses cortical stimulation for somatosensory feedback. J Neural Eng. 2014 Oct; 11(5):056024. Klaes C, Shi Y, Kellis S, Minxha J, Revechkis B, Andersen RA. PMID: 25242377.
      View in: PubMed   Mentions: 31     Fields:    Translation:Animals
    38. Potential for unreliable interpretation of EEG recorded with microelectrodes. Epilepsia. 2013 Aug; 54(8):1391-401. Stacey WC, Kellis S, Greger B, Butson CR, Patel PR, Assaf T, Mihaylova T, Glynn S. PMID: 23647099.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    39. Decoding stimulus identity from multi-unit activity and local field potentials along the ventral auditory stream in the awake primate: implications for cortical neural prostheses. J Neural Eng. 2013 Feb; 10(1):016010. Smith E, Kellis S, House P, Greger B. PMID: 23283406.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    40. Signal distortion from microelectrodes in clinical EEG acquisition systems. J Neural Eng. 2012 Oct; 9(5):056007. Stacey WC, Kellis S, Patel PR, Greger B, Butson CR. PMID: 22878608.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    41. Decoding hand trajectories from micro-electrocorticography in human patients. Annu Int Conf IEEE Eng Med Biol Soc. 2012; 2012:4091-4. Kellis S, Hanrahan S, Davis T, House PA, Brown R, Greger B. PMID: 23366827.
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    42. Information transfer along the ventral auditory processing stream in the awake macaque. Annu Int Conf IEEE Eng Med Biol Soc. 2012; 2012:5178-81. Smith EH, Kellis SS, House PA, Greger B. PMID: 23367095.
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    43. Platinum microwire for subdural electrocorticography over human neocortex: millimeter-scale spatiotemporal dynamics. Annu Int Conf IEEE Eng Med Biol Soc. 2011; 2011:4761-5. Kellis S, Greger B, Hanrahan S, House P, Brown R. PMID: 22255402.
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    44. Decoding spoken words using local field potentials recorded from the cortical surface. J Neural Eng. 2010 Oct; 7(5):056007. Kellis S, Miller K, Thomson K, Brown R, House P, Greger B. PMID: 20811093.
      View in: PubMed   Mentions: 67     Fields:    Translation:Humans
    45. Classification of spoken words using surface local field potentials. Annu Int Conf IEEE Eng Med Biol Soc. 2010; 2010:3827-30. Kellis S, Miller K, Thomson K, Brown R, House P, Greger B. PMID: 21097062.
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    46. Human neocortical electrical activity recorded on nonpenetrating microwire arrays: applicability for neuroprostheses. Neurosurg Focus. 2009 Jul; 27(1):E9. Kellis SS, House PA, Thomson KE, Brown R, Greger B. PMID: 19569897.
      View in: PubMed   Mentions: 19     Fields:    Translation:Humans
    47. Multi-scale recordings for neuroprosthetic control of finger movements. Annu Int Conf IEEE Eng Med Biol Soc. 2009; 2009:4573-7. Baker J, Bishop W, Kellis S, Levy T, House P, Greger B. PMID: 19963841.
      View in: PubMed   Mentions:
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