Postdoctoral Fellows

Makayla Cordoza, PhD, RN, CCRN-K

Makayla Cordoza, PhD, RN, CCRN-K

Makayla Cordoza is a postdoctoral fellow in the Center for Sleep and Circadian Neurobiology (T32 HL07713), working primarily with Dr. David Dinges in the Unit for Experimental Psychiatry, Division of Sleep and Chronobiology, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine. Makayla received her Bachelors of Nursing from Linfield College in 2008, her Masters of Science in Nursing with a concentration in clinical research administration from George Washington University in 2012, and her PhD in nursing science from the University of Washington in 2018. Makayla is presently interested in the effects of sleep disturbance on cognitive outcomes for survivors of critical illness. She is also interested in improving sleep for patients in the intensive care unit.

Research interests:

Sleep quality, cognitive impairment, post-intensive care syndrome, critical illness

Recent Publications:

Cordoza M, Ulrich R, Manulik B, Gardiner S, Fitzpatrick P, Hazen T, Mirka A, Perkins S. Impact of Nurses Taking a Work Break in a Hospital Garden on Burnout. American Journal of Critical Care. 2018;27(6):1-5.

Fitzwater J, Johnstone C, Schippers M, Luedtke C, Cordoza M, Norman B. A Comparison of oral, axillary, and temporal artery temperature measuring devices in adult acute care. MEDSUG Nursing. 2018;26(3).

Keeble TR, Gossip M, Cordoza M, Deckard M, Watson N. Targeted Temperature Management in Nursing Care. Therapeutic Hypothermia and Temperature Management. 2018;8(3):131-135.

Michael G. Smith, PhD

Michael G. Smith, PhD

Michael Smith is a postdoctoral researcher at the University of Pennsylvania School of Medicine Division of Sleep and Chronobiology. He obtained his BSc and MSc in acoustics from the University of Salford in the United Kingdom. He then completed his PhD in medicine from the University of Gothenburg in Sweden, during which he became interested in sleep research, including attending the Sleep Medicine and Chronobiology Summer School at the University of Oxford Sleep and Circadian Neuroscience Institute. His research interests include noise- and vibration-induced sleep disruption, the effects of sleep fragmentation on health, performance and work ability, and the health consequences of environmental noise exposure.

From 2016-2017 Dr. Smith was a visiting scholar at Manchester Metropolitan University School of Business and Law. He is a member of the executive committee of the International Commission on the Biological Effects of Noise (ICBEN) as co-chair for “Team 5: Effect of Noise on Sleep”. He is also a member of the Sleep Research Society, European Sleep Research Society, Society for Research on Biological Rhythms, Institute of Acoustics and the Swedish Acoustical Society. For his research, has received the Young Scientist Award from the International Commission on the Biological Effects of Noise, the Adlerbertska Foundation Scholarship and the Sixten Gemzéus Scholarship.

Dr. Smith is an ad-hoc reviewer for the Journal of Sleep Research, Journal of Biological Rhythms, Noise and Health, International Journal of Environmental Research and Public Health, Scientific Reports, International Journal of Occupational Medicine and Environmental Health, Journal of Transport and Health, Acta Acustica united with Acustica, Travel Behaviour and Society and Journal of Low Frequency Noise, Vibration and Active Control. His research has featured nationally and internationally on television, radio, newspapers and popular science press.


Riedy, S.*, Smith, M. G.*, Rocha, S. and Basner, M. (2021) “Noise as a sleep aid: A systematic review.” Sleep Medicine Reviews 55: 101385. *Co-first authorship.

Smith, M. G., Kelley, M. and Basner, M. (2020) “A brief history of spaceflight from 1961 to 2020: An analysis of missions and astronaut demographics.” Acta Astronautica 175: 290-299

Smith, M. G., Ögren, M., Thorsson, P., Hussain-Alkhateeb, L., Pedersen, E., Forssén, J., Ageborg Morsing, J. and Persson Waye, K. (2020) “A laboratory study on the effects of wind turbine noise on sleep: Results of the polysomnographic WiTNES study.” SLEEP 42(9): zsaa046

Smith, M. G., Rocha, S., Witte, M. and Basner, M. (2020) “On the feasibility of measuring physiologic and self-reported sleep disturbance by aircraft noise on a national scale: A pilot study around Atlanta airport.”  Science of the Total Environment 718: 137368

Smith, M. G., Witte, M., Rocha, S. and Basner, M. (2019) “Effectiveness of incentives and follow-up on increasing survey response rates and participation in field studies.” BMC Med Res Method 19: 230

Rocha, S.*, Smith, M. G.*, Witte, M. and Basner, M. (2019) “Survey results of a pilot sleep study near Atlanta International Airport.” Int J Environ Res Pub Health 16(22): 4321 *Co-first authors

Smith, M. G., Ögren, M., Ageborg Morsing, J. and Persson Waye, K. (2019) “Effects of ground-borne noise from railway tunnels on sleep: A polysomnographic study.” Building and Environment 149: 288-296

Thorsson, P., Ögren, M., Forssén, J., Smith, M. G., Pedersen, E. and Persson Waye, K. (2019) “Creating sound immission mimicking real-life characteristics from a single wind turbine.” Applied Acoustics 143: 66-73

Ageborg Morsing, J., Smith, M. G., Ögren, M., Thorsson, P., Pedersen, E., Forssén, J. and Persson Waye, K. (2018) “Characteristics of wind turbine noise contributing to objective sleep disturbance.” Int J Environ Res Pub Health 15(11): 2573

Persson Waye, K., Smith, M. G., Ögren, M., Hussain-Alkhateeb, L., Koopman, A., Woodcock, J., Sharp, C., Peris, E., Waddington, D. and Jansen, S. “Assessing the exposure-response relationship of sleep disturbance and vibration in field and laboratory settings.” (2018) Environ Poll

Thorsson, P., Persson Waye, K, Ögren, M., Smith, M. G., Pedersen, E. and Forssén, J. “Low-frequency outdoor-indoor noise level difference for wind turbine assessment.” (2018) J Acoust Soc Am 143(3): EL206-EL211

Ögren, M, Gidlöf-Gunnarsson, A., Smith, M. G., Gustavsson, S. and Persson Waye, K. (2017) “Comparison of annoyance from railway noise and railway vibration.” Int J Environ Res Pub Health 14(7): 805

Smith, M. G., Croy, I., Ögren, M, Hammar, O., Lindberg, E. and Persson Waye, K. (2017) “Physiological effects of railway vibration and noise on sleep.” J Acoust Soc Am 141(5): 3262-3269

Croy, I., Smith, M. G., Gidlöf-Gunnarsson, A. and Persson Waye, K. (2017) “Optimal questions for sleep in epidemiological studies – Comparisons of subjective and objective measures in laboratory and field studies.” Behavioral Sleep Medicine 15(6): 466-482

Smith, M. G., Croy, I., Hammar, O. and Persson Waye, K. (2016) “Vibration from freight trains fragments sleep: A polysomnographic study.” Scientific Reports 6: 24717

Waddington, D., Woodcock, J., Smith, M. G., Janssen, S. and Persson Waye, K. (2015) “CargoVibes: Human response to vibration due to freight rail traffic.” Int J Rail Transport 3(4): 233-248

Smith, M. G., Croy, I. and Persson Waye, K. (2014) “Human sleep and cortical reactivity are influenced by lunar phase.” Current Biology 24(12): R551-R552

Croy, I., Smith, M. G. and Persson Waye, K. (2013) “Effects of train noise and vibration on human heart rate during sleep: An experimental study.” BMJ Open 3(5): e002655

Smith, M. G., Croy, I., Ögren, M. and Persson Waye, K. (2013) “On the influence of freight trains on humans: A laboratory investigation of the impact of nocturnal low frequency vibration and noise on sleep and heart rate.” PLoS ONE 8(2): e55829.

Christopher W. Jones, PhD

Christopher W. Jones, PhD

Christopher Jones is a postdoctoral fellow in the Center for Sleep and Circadian Neurobiology (T32 HL07713; PI: Allan Pack), working under the mentorship of Dr. David Dinges at the Unit for Experimental Psychiatry in the Department of Psychiatry at the Perelman School of Medicine, University of Pennsylvania. Christopher obtained a BA in Biology from the University of Delaware and conducted post-baccalaureate research at the University of Pennsylvania. Christopher completed his PhD in neuroscience at Tulane University under the advisement of Dr. Stacy Drury in her Behavioral and Neurodevelopmental Genetics Laboratory. His research during his doctoral training focused on infant development, exploring the impacts of maternal life-course adversity on her infant and further, examining mechanistic pathways through which maternal adversity is transmitted across generations.

Research Interests

Examining how the dynamic neurobiological responses to sleep loss and subsequent recovery contribute to neurocognitive performance and mood in humans, as well as biological pathways influencing these responses that may confer vulnerability or resilience to the impacts of sleep loss. Additionally, evaluating whether emerging technology that stimulates the brain during sleep can maximize the restorative benefits of sleep when sleep opportunity is restricted.

Selected Publications

  1. Esteves K*, Jones CW*, Wade M, Callerame K, Smith AK, Theall KP, Drury SS. Adverse childhood experiences: Implications for offspring telomere length and psychopathology. American Journal of Psychiatry. 177(1):47-57, 2020. PMID: 31509004 [* Equal contribution from authors]
  2. Jones CW, Esteves K, Gray SAO, Clarke TN, Callerame K, Theall KP, Drury SS. The transgenerational transmission of maternal adverse childhood experiences (ACEs): Insights from placental aging and infant autonomic nervous system reactivity. Psychoneuroendocrinology. 106:20-27, 2019. PMCID: PMC6589123
  3. Jones CW, Gray SAO, Theall KP, Drury SS. Polymorphic variation in the SLC5A7 gene influences infant autonomic reactivity and self-regulation: A neurobiological model for ANS stress responsivity and infant temperament. Psychoneuroendocrinology. 97:28-36, 2018. PMCID: PMC6500559
  4. Gray SAO, Jones CW, Theall KP, Glackin E, Drury SS. Thinking across generations: Unique contributions of maternal early life and prenatal stress to infant physiology. Journal of the American Academy of Child and Adolescent Psychiatry. 56(11):922-929, 2017. PMCID: PMC5939998 [Recognized by 2018 Norbert & Charlotte Rieger Award for Scientific Achievement as “most outstanding scientific paper published in the Journal of the American Academy of Child and Adolescent Psychiatry]
  5. Drury S, Howell BR, Jones CW, Esteves K, Morin E, Schlesinger R, Meyer JS, Baker K, Sanchez MM. Shaping long-term primate development: telomere length trajectory as an indicator of early maternal maltreatment and predictor of future physiologic regulation. Development and Psychopathology. 59(5):1539-1551, 2017. PMCID: PMC5864972
  6. Jones CW, Gambala C, Esteves KC, Wallace M, Schlesinger R, O’Quinn M, Kidd L, Theall KP, Drury SS. Differences in placental telomere length suggest a link between racial disparities in birth outcomes and cellular aging. American Journal of Obstetrics and Gynecology. 216(3):294.e1-294.e8, 2017. PMCID: PMC5334179
  7. Basner M, Dinges DF, Mollicone DJ, Ecker AE, Jones CW, Hyder EC, Di Antonio A, Savelev I, Kan K, Goel N, Morukov B, Sutton JP. 520-day Mars mission simulation reveals protracted crew hypokinesis and alterations of sleep duration and timing. Proceedings of the National Academy of Science, 110(7):2635-40, 2013. PMCID: PMC3574912
  8. Minkel JD, Banks S, Htaik O, Moreta MC, Jones CW, McGlinchey EL, Simpson NS, Dinges DF. Sleep deprivation and stressors: Evidence for elevated negative affect in response to mild stressors when sleep deprived. Emotion, 12(5): 1015-20, 2012. PMCID: PMC3964364

Back to Top