Published Abstracts
Ell, S. W., Weinstein, A., & Ivry, R. B. (2008, February). The Effect of Focal Basal Ganglia Lesions on Rule-Based and Information-Integration Category Learning. Journal of the International Neuropsychological Society, 14 (S1), 223. abstract
Schnyer, D. M., Maddox, W. T., Ell, S. W., Davis, S., & Verfaellie, M. (2008, February). Dissociating rule-based and information-integration category learning: Evidence from frontal lesion patients. Journal of the International Neuropsychological Society, 14 (S1), 224. abstract
Invited Presentations
Ell, S. W. (2013, September). Multiple systems of category learning: Categorization as a tool for understanding cognitive process. Department of Exercise Science and STEM Education. University of Maine.
Ell, S. W. (2012, April). Characterizing and improving rule-guided behavior in Parkinson’s disease. Cognitive Psychology area, Psychology Department, University of Massachusetts, Amherst.
FRAMES (FRamework for Analogy and Memory Embodied in Spiking neurons) team (2010, November). Kickoff meeting for Integrated Cognitive-Neuroscience Architectures for Understanding Sensemaking (ICArUS) funding program. College Park, MD.
Ell, S.W. (2010, September). Parkinson’s disease and cognition. Maine Institute for Human Genetics and Health, Bangor, ME.
Ell, S. W., & Drasby, E. (2009, October). Treating cognitive dysfunction in Parkinson’s disease: A cognitive neuroscience-based approach to attenuating deficits of selective attention: A study update. Paper presented at the 3rd annual meeting of the Maine Neurogenetics Consortium, Biddeford, ME.
Ell, S. W. (2009, April). The impact of basal ganglia dysfunction on rule-based category learning. Psychology Department, University of Texas, Austin.
Ell, S. W. (2008, April). Parkinson’s study update. Presented at the 6th annual Parkinson’s Awareness Conference, Freeport, ME. pdf
Ell, S. W. (2008, March). The Cognitive Neuroscience of Category Learning. Psychology Department, Colby College.
Ell, S. W., & Drasby, E. (2007, September). Treating cognitive dysfunction in Parkinson’s disease: A cognitive neuroscience-based approach to attenuating deficits of selective attention. Paper presented at the 1st annual meeting of the Maine Neurogenetics Consortium Conference, Bar Harbor, ME.
Ell, S. W. (2007, May). The Consequences of Basal Ganglia Dysfunction for Learning and Memory. Paper presented at the annual meeting of the Maine Association of Psychiatric Physicians, Freeport, ME. slides
Selected Conference Presentations
Hélie, S., Shamloo, F., Jellison, L. D., & Ell, S. W. (2015, November). Empirical cross-validation and generalization in perceptual categorization. Talk presented at the 56th annual meeting of the Psychonomic Society, Chicago, IL.
Szymula, L., Hutchinson, S., Heikkinen, M., Hélie, S., & Ell, S. W. (2015, November). The impact of category structure and training methodology on the acquisition and generalizability of within-category information. Poster presented at the 56th annual meeting of the Psychonomic Society, Chicago, IL. poster
Szymula, L., Maddox, W. T., & Ell, S. W. (2015, March). The impact of a match between global and local incentives on categorization rule switching in individuals with Parkinson’s disease and healthy older adults. Poster presented at the 22nd annual meeting of the Cognitive Neuroscience Society, San Francisco, CA.
Ell, S. W., Hutchinson, S. B., Hawthorne, L., Szymula, L., & McCoy, S. K. (2014, November). Good things come to those who wait: Enhancement in a rule-based category learning task after social-evaluative stress. Talk presented at the 55th annual meeting of the Psychonomic Society, Long Beach, CA.
Szymula, L., McCoy, S. K., & Ell, S. W. (2014, November). The influence of self-control use on cognitive processing. Poster presented at the annual meeting of the 55thannual meeting of the Psychonomic Society, Long Beach, CA.
Hutchinson, S. B., Hawthorne, L., Szymula, L., McCoy, S. K., & Ell, S.W. (2014, November). A matter of time: Post-stress enhancement of rule-based category learning performance. Poster presented at the annual meeting of the Society for Neuroscience, Washington, D.C.
Hutchinson, S. B., Hawthorne, L., Szymula, L., McCoy, S. K., & Ell, S.W. (2014, August). Exploring the timeline of the acute stress response and impact on cognitive performance. Poster presented at the annual meeting of the International Society of Psychoneuroendocrinology, Montreal, Canada.
Hutchinson, S. B., Hawthorne, L., McCoy, S. K., & Ell, S.W. (2013, November). Stress and pressure: Differential effects on physiological reactivity and cognitive performance. Poster presented at the annual meeting of the Society for Neuroscience, San Diego, CA. poster
Hélie, S., Ell, S. W., Filoteo, J. V., Glass, B. D., & Maddox, W. T. (2013, April). A computational cognitive neuroscience model of criterion learning in rule-guided behavior. Poster presented at the 20th annual meeting of the Cognitive Neuroscience Society, San Francisco, CA.
Ell, S. W. (2012, November). Characterizing rule-based categorization impairments in individuals with Parkinson’s disease. Talk to be presented at the 53rd annual meeting of the Psychonomic Society, Minneapolis, MN.
Hélie, S., Maddox, W. T., Ell, S. W., Filoteo, J. V., & Glass, B. D. (2012, November). A neurocomputational model of criterion learning in rule-based categorization Talk to be presented at the 53rd annual meeting of the Psychonomic Society, Minneapolis, MN.
Hutchinson, S. B., Hélie, S., McCoy, S. K., & Ell, S. W. (2012, October). An investigation of the impact of stress on a spiking model of working memory maintenance. Poster presented at the annual meeting of the Society for Neuroscience, New Orleans, LA.
Ell, S. W., Hutchinson, S., & McCoy, S. K. (2011, November). Pressure, stress, and cognition: Using categorization as a model task to investigate the stress-cognition relationship. Talk presented at the 52nd annual meeting of the Psychonomic Society, Seattle, WA.
Hutchinson, S., Cosley, B., McCoy, S. K., & Ell, S. W. (2011, April). Is pressure stressful? The impact of pressure on stress reactivity and category learning. Poster session presented at the 18th annual meeting of the Cognitive Neuroscience Society, San Francisco, CA.
Ell, S.W., Zilioli, M. (2010, November). The impact of Parkinson’s disease on intra-dimensional shifts of the decision criterion in rule-based category learning. Poster session presented at the annual meeting of the Society for Neuroscience, San Diego, CA.
Zilioli, M.K.C., Maddox, W.T., Drasby, E.J., & Ell, S.W. (2010, April). The impact of Parkinson’s disease on the effects of a match between global and local incentives in rule-based category learning. Poster session presented at the 17th annual meeting of the Cognitive Neuroscience Society, Montreal, Canada.
Ell, S. W., & Favreau, L., Drasby, E. (2009, March). Improving the Performance of Parkinson’s Disease Patients on a Selective-Attention-Demanding, Category-Learning Task. Poster session presented at the 16th annual meeting of the Cognitive Neuroscience Society, San Francisco, CA.
McCoy, S.K., Cosley, B., & Ell, S. W. (2009, March). Sympathetic and parasympathetic effects on cognitive performance. Poster session presented at the 16th annual meeting of the Cognitive Neuroscience Society, San Francisco, CA.
Cosley, B., McCoy, S.K., Wellman, J.D., Newell, E.E., & Ell, S. W. (2009, February). Can threat enhance performance? Evidence for enhanced cognitive performance under physiological threat. Poster session presented at the meeting of the Society for Personality and Social Psychology, Tampa, FL.
Ell, S. W., Weinstein, A., & Ivry, R. B. (2008, April). Rule-Based Categorization Deficits in Patients with Parkinson’s Disease are not Dependent upon Dopaminergic Medication. Poster session accepted for the 15th annual meeting of the Cognitive Neuroscience Society, San Francisco, CA.
Ell, S. W., Weinstein, A., Filoteo, J.V., Maddox, W.T., & Ivry, R. B. (2007, May). Selective attention demand mediates rule-based categorization deficits in focal basal ganglia lesion patients. Poster session presented at the 14th annual meeting of the Cognitive Neuroscience Society, New York, NY.