People - J. Daniel Ragland
J. Daniel Ragland, Ph.D.
Associate Professor of Psychiatry and Behavioral Sciences
1981-1984 B.A. Psychology, Earlham College, Richmond, IN
1985-1987 M.A. Psychology, American University, Washington, DC
1987-1991 Ph.D. Clinical Psychology, American University, Washington, DC
1991-1993 Post-Doctoral Fellowship, Univ. of Pennsylvania, Philadelphia, PA
Dr. Ragland's work investigates the effect of schizophrenia on brain function during episodic memory encoding and retrieval. Of particular interest is the role that organizational abilities play in new learning and subsequent memory retrieval, how schizophrenia disrupts these organizational processes, and how these deficits might be remediated to improve patients' frontotemporal brain activity and daily function. His research has used a combination of neuropsychological and functional imaging techniques (133Xenon, PET 0-15, BOLD fMRI) to identify the cognitive functions and brain regions underlying these memory processes. Other research interests include developing translational fMRI memory paradigms for mouse and human, and investigating the neurological basis of food craving.
Ragland, J.D., Valdez, J.N., Loughead, J., Gur, R.C., Gur, R.E. (in press) Functional magnetic resonance imaging of internal source monitoring in schizophrenia: Recognition with and without recollection. Schizophrenia Research. pdf (in press)
Weiss, E.M., Ragland, J.D., Brensinger, C.M., Bilker, W.B., Deisenhammer, E.A., Delazer, M. (2006). Sex differences in clustering and switching in verbal fluency tasks. Journal of the International Neuropsychological Society, 12:502-509.
Dickinson, D., Ragland, J.D., Calkins, M.E., Gold, J.M., Gur, R.C. (2006). A comparison of cognitive structure in schizophrenia patients and healthy controls using confirmatory factor analysis. Schizophrenia Research, 85:20-29. pdf
Moelter, S.T., Hill, S.K., Hughett, P., Gur, R.C., Gur, R.E., Ragland, J.D. (2005). Organization of semantic category exemplars in schizophrenia. Schizophrenia Research, 78:209-217. pdf
Ragland, J.D., Gur, R.C., Valdez, J.N., Loughead, J., Elliott, M., Kohler, C., Kanes, S., Siegel, S.J., Moelter, S.T., Gur, R.E. (2005). Levels-of-processing effect on frontotemporal function in schizophrenia during word encoding and recognition. American Journal of Psychiatry, 162:1840-1848. pdf
Pelchat, M.L., Johnson, A., Chan, R., Valdez, J., Ragland, J.D. (2004). Images of desire: food craving activation during fMRI. NeuroImage, 23:1486-1493. pdf
Ragland, J.D., Gur, R.C., Valdez, J., Turetsky, B.I., Elliott, M., Kohler, C., Siegel, S., Kanes, S., Gur, R.E. (2004). Event-Related fMRI of frontotemporal activity during word encoding and recognition in schizophrenia. American Journal of Psychiatry, 161:1004-1015. pdf
Censits, D.M., Ragland, J.D., Gur, R.C., Gur, R.E. (1997). Neuropsychological evidence supporting a neurodevelopmental model of schizophrenia: a longitudinal study. Schizophrenia Research 24:289-298. pdf
Goldberg, T.E., Ragland, J.D., Torrey, E.F., Gold, J.M., Bigelow, L.B., Weinberger, D.R. (1990). Neuropsychological assessment of monozygotic twins discordant for schizophrenia. Archives of General Psychiatry 47:1066-1072.