Patrick Cullen
Patrick Cullen, Ph.D.
Scientist
Human Factors
Warrenville

Dr. Cullen specializes in the study of warning and threat perception, human cognition, and learning and memory. He has a background in cognitive and behavioral neuroscience investigating the formation and retrieval of memories, memory precision, and behavioral and physiological responses to events using behavior analysis, physiological measurements, and psychometrics. He currently applies his expertise to human factors in a wide variety of settings including review of warnings and instructions for consumer and industrial products, evaluation of compliance (CPSC, OSHA, FHSA, etc.), and investigation of transportation accidents, occupational incidents, and slips, trips and falls.

Dr. Cullen received his Ph.D. in Experimental Psychology with an emphasis in Behavioral Neuroscience from Kent State University in 2013. His graduate work examined the behavioral and neural mechanisms involved in generating precise and generalized fear memories, retrograde amnesia, and the effects of stress on memory. Prior to joining Exponent, Dr. Cullen completed a postdoctoral fellowship at the University of Wisconsin-Milwaukee, where he studied how threats are detected, perceived, and can potentially affect behavior. He has extensive experience in behavioral and physiological research and analysis, experimental design, statistical analyses, and managing multi-source data.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Experimental Psychology, Kent State University, 2013
  • M.A., Experimental Psychology, Kent State University, 2011
  • B.A., Psychology, University of California, Los Angeles (UCLA), 2007
  • Postdoctoral Fellow, University of Wisconsin, Milwaukee, 2013-2017

LICENSES & CERTIFICATIONS

OSHA Occupational Safety and Health Standards for General Industry (OSHA 511)

Publications

Cullen, P.K., Ferrara, N.C., Pullins, S.E., Helmstetter, F.J. (2017). Context memory formation requires activity-dependent protein degradation in the hippocampus. Learning and Memory, 24, 589-596.

Ferrara, N.C., Cullen, P.K., & Helmstetter, F.J. (2017). Input from the medial geniculate nucleus modulates amygdala encoding of fear memory discrimination. Learning and Memory, 24, 414-421.

Azimipour, M., Sheikhzadeh, M., Baumgartner, R., Cullen, P.K., Helmstetter, F.J., Chang, W., Pashaie, R. (2017). Fluorescence Laminar Optical Tomography for Brain Imaging: System Implementation and Performance Evaluation. Journal of Biomedical Optics, 22(1), 016003.

Cullen, P.K., Gilman, T.L., Winiecki, P., Riccio, D.C., Jasnow, A.M. (2015). Activity of the anterior cingulate cortex and ventral hippocampus underlie increases in contextual fear generalization. Neurobiological Mechanisms of Learning and Memory, 124, 19-27.

Plumb, T.N., Cullen, P.K., Minor, T.R. (2015). Parameters of hormetic stress resilience to trauma in rats. Stress, 18, 88-95.

Hruska, B., Cullen, P.K., & Delahanty, D. L. (2014). Pharmacological Modulation of Acute Trauma Memories to Prevent PTSD: Considerations from a Developmental Perspective. Neurobiology of Learning and Memory, 112, 122-129. 

Cullen, P.K., Dulka, B., Ortiz, S., Riccio, D.C., Jasnow, A.M. (2014). The loss of presynaptic GABAB1A receptors results in increased rates of context fear generalization. Learning and Memory, 21, 180-184.

Lynch III, J., Cullen, P., K., Jasnow, A.M., & Riccio, D. R. (2013). Sex Differences in the generalization of fear as a function of retention intervals. Learning and Memory, 20, 628-632. 

Jasnow, A.M., Cullen, P.K., & Riccio, D.C. (2012). Remembering another dimension of forgetting. Frontiers in Psychology, 3, 175, 1-8. 

Riccio, D.C. & Cullen, P.K. (2012). Memory Consolidation and Reconsolidation. N. M. Seel (Ed.), Encyclopedia of the Sciences of Learning. New York, NY: Springer. 

Minor, T. R., Rowe, M., Cullen, P. K., & Furst, S. (2008). Enhancing brain adenosine signaling with the nucleoside transport blocker NBTI (S-(4-nitrobenzyl)-6-theoinosine) mimics the effects of inescapable shock on later shuttle-escape performance in rats. Behavioral Neuroscience, 122, 1236-1247.

Presentations

Cullen, P.K., Ferrara, N.C., Pullins, S.E., Hintz, J.M., Helmstetter, F.J. (2017). Neural activity in the ventrolateral periaqueductal gray provides a feedback mechanism to modulate fear network activity. Abstract for poster presentation. Society for Neuroscience, Washington, DC.

Cullen, P.K. (2017). Temporal dynamics of the neural circuit supporting fear memory retrieval. Invited talk at Midwestern Psychological Association. Chicago, IL. 

Cullen, P.K. (2016). Fear conditioning, generalization, and maintenance: implications for posttraumatic stress disorder. Invited talk at VA New Jersey Health Care System. East Orange, NJ. 

Cullen, P.K., Ferrara, N.C., Pullins, S.E., Hintz, J.M., Helmstetter, F.J. (2016). Behavioral expression of a fear memory is maintained by neural activity in a distributed brain network throughout CS presentation. Abstract for poster presentation. Society for Neuroscience, San Diego, CA.

Cullen, P.K., Ferrara, N.C., Pullins, S.E., & Helmstetter, F.J. (2015). Neural activity in the lateral amygdala driven by auditory CS onset critically determines memory retrieval and behavioral expression of fear. Abstract for poster presentation. Society for Neuroscience, Chicago, IL.

Cullen, P.K., Ferrara, N. C., Califf, B., Helmstetter, F. J. (2014). Hippocampal protein degradation is required for context memory formation. Abstract for poster presentation. Society for Neuroscience, Washington, DC.

Cullen, P.K., Ferrara, N. C., Helmstetter, F. J. (2014). Using optogenetics to alter fear and molecular signaling within the amygdala. Abstract for poster presentation. Pavlovian Society, Seattle, WA.

Cullen, P.K., Dejanovic, D., Mulvany, J., Dulka, B., Riccio, D.R., & Jasnow, A.M. (2013). A hippocampus- mPFC interaction underlies the expression of a contextually imprecise fear memory. Abstract for poster presentation. Society for Neuroscience, San Diego, CA.

Cullen, P.K., Trask, S., Dulka, B., Riccio, D.C., & Jasnow, A.M. (2012). The role of presynaptic inhibition in the generalization of context memory. Abstract for poster presentation. Society for Neuroscience, New Orleans, LA.

Cullen, P.K., Rexroad, S., Pickens, L., Fountain, S., & Riccio, D. C. (2010). The effects of adolescent nicotine exposure on later adult contextual memory and extinction in rats. Abstract for poster presentation. Midwestern Psychological Association, Chicago, IL.

Cullen, P.K., Poore, J.C., & Gable, S.L. (2007). Approach and Avoidance Motivation Moderates Relationship Satisfaction. Abstract for poster presentation. University of California, Los Angeles Psychology Undergraduate Research Conference, Los Angeles, CA.

Professional Affiliations

American Society of Safety Engineers

Human Factors and Ergonomics Society

Midwestern Psychological Association

Molecular and Cellular Cognition Society

Society for Neuroscience

Additional Information

Peer Reviewer

Behavioral Brain Research

Neurobiology of Learning and Memory

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Experimental Psychology, Kent State University, 2013
  • M.A., Experimental Psychology, Kent State University, 2011
  • B.A., Psychology, University of California, Los Angeles (UCLA), 2007
  • Postdoctoral Fellow, University of Wisconsin, Milwaukee, 2013-2017

LICENSES & CERTIFICATIONS

OSHA Occupational Safety and Health Standards for General Industry (OSHA 511)