CSLA: Joel Ellwanger

College of Natural and Social

Department of Psychology

Joel Ellwanger
Assistant Professor of Psychology

Office: KH D3089

Phone: (323) 343-2266

FAX: (323) 343-2281

Email: jellwan@calstatela.edu


 | Teaching Interests
 | Research Interests
Educational Background
 | Schedule
& Office Hours



joined the Psychology Department at Cal State
LA in Fall 2002.My research and teaching interests are in the areas of cognition
and neuroscience.

Teaching Interests


teach undergraduate and
graduate level courses in physiological psychology and statistics. Future courses
may be in the area of cognitive neuroscience. I think all
students of psychology should develop research skills and I make that a focus
of my teaching. I enjoy collaborating
with students on research projects and find that mentoring students in the
research process is one of the most rewarding aspects of my role as a teacher.

Research Interests


y research interests include the study of
attention and memory through the use of physiological indices of cognition.
One of the primary reasons I use physiological indices of cognition in my
research is to measure processes that are automatic or take place outside of
normal awareness. Specifically, I am
interested in whether physiological measures related to attention and memory
can be used to enhance forensic diagnosis and to develop cognitive models of
psychopathology. The physiological measures I use include event-related
potential (ERP) measures of brain activity, pupil size, skin conductance, and
startle eyeblink modification.

Representative Professional Activities



In press

Ellwanger, J., Geyer, M. A., & Braff, D.L. The
Relationship of Age to Prepulse Inhibition and Habituation of the Acoustic
Startle Response. Biological Psychology.


E., Ellwanger, J., Morris, S.,
Braff, D., Verney, S., & Perivoliotis, D.  Pupillary response measures of cognitive overload and
attentional filtering deficits in negative symptom patients with
schizophrenia.  International
Journal of Psychophysiology
, 45, 42. Paper presented at the11th
World Congress of Psychophysiology, Montreal, Canada.


Ellwanger, J., Grillo, A. N., Kluegel, G. M.,
& Sellers, G. M. The relationship of prepulse inhibition of the startle
response to attentional performance and schizotypal characteristics. Psychophysiology,
38, Suppl. 1,s39. Paper presented at the 41st annual
meeting of the Society for Psychophysiological Research, Montreal, Canada.


Caligiuri, M., & Ellwanger, J.  Motor and cognitive aspects of motor
retardation in depression.  Journal
of Affective Disorders
, 57, 83-93.


Ellwanger, J., Granholm,
E., Verney, S., & Vukov, B. 
Parasympathetic and sympathetic contributions to the pupillary
orienting response. Psychophysiology, 37, Suppl. 1, s38. Paper presented
at the 40th annual meeting of the Society for Psychophysiological
Research, San Diego, CA.


Ellwanger, J., &
Braff, D. L. (2000). Schizophrenia patients and normal controls demonstrate a
similar effect of sex on prepulse inhibition of the startle reflex. Biological
, 47, 154S.  
Paper presented at the 45th annual conference of the
Society for Biological Psychiatry, Chicago, IL.


J., Tenhula, W. N., Sweet, J. J., & Rosenfeld, J. P. Identifying
simulators of cognitive deficit through combined use of neuropsychological
test performance and event-related potentials. Journal of Clinical and
Experimental Neuropsychology
, 21, 866-879.


Rosenfeld, J. P., Ellwanger, J., Nolan
K., Wu, S., Bermann, R. G., & Sweet, J. 
P300 scalp amplitude distribution as an index of deception in a
simulated cognitive deficit model.  International
Journal of Psychophysiology
, 33, 3-19.


Ellwanger, J., Rosenfeld, J. P.,
Hankin, B.L.,  & Sweet, J.J. P300 as
an index of recognition in a standard and difficult match-to-sample
test:  A model of amnesia in normal
adults.  The Clinical
, 13, 100-108.


Rosenfeld, J. P., & Ellwanger, J. Cognitive psychophysiology in detection of
malingered cognitive deficit. In J. J. Sweet (Ed.) Forensic
Neuropsychology: Fundamentals and practice
(pp. 283-302) Lisse, The
Netherlands: Swets & Zeitlinger.


Ellwanger, J., Granholm,
E., Cole, D.L., Jeste, D.V., & Braff D.L. Pupillary responses as a
measure of cognitive overload in older schizophrenia patients.  Biological Psychiatry, 45,
35S-36S. Paper presented at the 44th annual conference of the
Society for Biological Psychiatry, Washington D.C.


Ellwanger, J., & Braff, D.L.  Startle eyeblink non-responsivity
increases with age in schizophrenia patients and controls. Schizophrenia
, 36, 253-254. 
Paper presented at the seventh International Congress On Schizophrenia
Research, Santa Fe, New Mexico, April 1999.


Rosenfeld, J. P., Reinhart, A., Bhatt, M., Ellwanger, J., Gora, K., Sekera, M. & Sweet J. J. P300
correlates of simulated amnesia on a simple matching to sample task:  Topographic analyses of deceptive vs.
truthful responses. International Journal of Psychophysiology, 28,


Ellwanger, J., Rosenfeld, J. P., & Sweet,
J.  P300 event-related brain potential
as an index of recognition response to autobiographical and recently learned
information in closed-head-injury patients. The Clinical
11(4), 428-432.


J. P., Sweet, J., Chuang, J., Ellwanger, J., & Song, L. Detection of
simulated malingering using forced choice recognition enhanced with
event-related potential recording. The Clinical Neuropsychologist, 10(2),


Ellwanger, J.,
Rosenfeld, J. P., Sweet, J., & Bhatt, M. Detecting simulated amnesia for
autobiographical and recently learned information using the P300 event
related potential.  International Journal
of Psychophysiology,
23, 9-23.


Rosenfeld, J. P., Ellwanger, J., & Sweet, J.
Detecting malingered amnesia with event related potentials. International
Journal of Psychophysiology
, 19, 1-11.

Educational Background

Ph.D., Psychobiology, 1997

Northwestern University

Evanston, Illinois


M.S., Psychobiology, 1994

Northwestern University

Evanston, Illinois


B.A., Psychology, 1989

University of Wisconsin

Wisconsin, Madison


Fall' 04 Schedule Office Hours

Mon Tue Wen Thr Fri
4:15-5:15pm   4:15-5:15pm   9-10am