Skip to main content
Sign In
 

Donald C. Rojas, PhD

Adjunct Associate Professor


Contact Info:
Email:  Dr. Rojas
 
Clinical/Research Interests:
Dr. Rojas is interested in neurodevelopmental disorders such as autism, and childhood-onset psychotic disorders.

Colorado State University, Fort Collins, CO  BS  1990

Colorado State University, Fort Collins, CO  MS  1992
Colorado State University, Fort Collins, CO  PhD  1995

 

Selected Peer-Reviewed Publications* first author is a student or fellow

Rojas, D. C., Camou, S., Reite, M. & Rogers, S. J. (2005). Planum temporale volume in children and adolescents with autism.  Journal of Autism and Developmental Disabilities35(4), 479-486.

Greenblatt, R.E., Ossdadtchi, A., Pflieger, M.E. & Rojas, D.C. (2005). Local linear estimators and a statistical framework for event related analysis. International Journal of Bioelectromagnetism7(2), 22-25.

Rojas, D.C., Maharajh, K., Teale, P.D., Ramos-Kleman, M., Benkers, T.L., Carlson, J.P. & Reite, M.L. (2006).  Development of the 40-Hz steady state auditory evoked magnetic field from ages 5 to 52. Clinical Neurophysiology117, 110-117.

Tregellas, J. R., Davalos, D. B. & Rojas, D. C. (2006).  Effect of task difficulty on the functional anatomy of temporal processing. Neuroimage32, 307-315.

*Peterson, E., Schmidt, G. L., Tregellas, J. R., Winterrowd, E., Kopelioff, L., Hepburn, S., Reite, M. & Rojas, D. C. (2006). A voxel-based morphometry study of gray matter in parents of children with autism.  Neuroreport17(12), 1289-1292.

Rojas, D.C., Peterson, E., Winterrowd, E., Reite, M.L., Rogers, S.J. & Tregellas, J.R. (2006).  Regional gray matter volumetric changes in autism associated with social and repetitive behavior symptoms.  BMC Psychiatry6, 56.

*Wilson, T.W., Rojas, D.C., Reite, M.L., Teale, P.D. & Rogers, S.J. (2007).  Children and adolescents with autism exhibit reduced MEG steady-state gamma responses. Biological Psychiatry62, 192-7.

Frey, K.L., Rojas, D.C., Anderson, A. & Arciniegas, D.B. (2007).  Comparison of the GOAT and O-log as measures of post-traumatic amnesia.  Brain Injury21(5), 513-520.

Arciniegas, D.B., Rojas, D.C., Ramos Kleman, M., Asherin, R. & Reite, M.L. (2007).  Neurological signs and cognitive performance distinguish between adolescents with and without psychosis. Journal of Neuropsychiatry and Clinical Neurosciences, 19(3), 266-273.

Tregellas, J.R., Davalos, D.B., Rojas, D.C., Waldo, M.C., Gibson, L., Wylie, K., Du, Y.P. & Freedman, R. (2007).  Increased hemodynamic response in the hippocampus, thalamus and prefrontal cortex during abnormal sensory gating in schizophrenia. Schizophrenia Research, doi:10.1016/j.schres.2006.12.033.

Maharajh, K., Abrams, D., Rojas, D.C., Teale, P. & Reite. M.L. (2007). Auditory steady state and transient gamma band activity in bipolar disorder.  International Congress Series, 1300, 707-710.

Rojas, D.C., Slason, E. Teale, P.D. & Reite, M.L. (2007).  Neuromagnetic evidence of broader auditory cortical tuning in schizophrenia. Schizophrenia Research, 97 (1-3), 206-214.

*Wilson, T.W., Hernandez, O.O., Asherin, R.M., Teale, P.D., Reite, M.L. & Rojas, D.C. (2008).  Cortical gamma generators suggest abnormal auditory circuitry in early-onset psychosis.  Cerebral Cortex, 18, 371-378.

*Schmidt, G. L., Kimel, L.K., Winterrowd, E., Pennington, B.F., Hepburn, S.L. & Rojas, D.C. (2008). Impairments in phonological processing and non-verbal intellectual function in parents of children with autism. Journal of Clinical and Experimental Neuropsychology30 (5), 557-567.

*Wilson, T.W., Rojas, D.C., Teale, PD., Hernandez, O., Asherin, R.C. & Reite, M.L. (2007).  Aberrant functional organization and maturation in early-onset psychosis: Evidence from magnetoencephalography.  Psychiatry Research: Neuroimaging, 156 (1), 59-67.

Tregellas, J.R., Shatti, S., Tanabe, J.L., Martin, L.F., Gibson, L., Wylie, K. & Rojas, D.C. (2007). Gray matter volume differences and the effects of smoking on gray matter in schizophrenia. Schizophrenia Research, 97(1-3), 242-249.

*Winterrowd, E., Hepburn, S., Kopelioff, L., Reite, M.L. & Rojas, D.C. (2008).  Relationship of psychiatric disorders to measures of child function in parents of children with autism.  Mental Health Aspects of Developmental Disabilities, 11(2), 42-54.

Rojas, D.C., Maharajh, K., Teale, P.D. & Rogers, S.J. (2008).  Reduced neural synchronization of gamma-band activity in parents of children with autism. BMC Psychiatry, 8, 66, PMID: 18673566.

Teale, P., Collins, D., Maharajh, K., Rojas, D.C., Kronberg, E. & Reite, M. (2008). Cortical source estimates of gamma-band amplitude and phase are different in schizophrenia. Neuroimage, 42(4), 1481-1489.

Tregellas, J.R., Ellis, J., Shatti, S. Du, Y. Rojas, D.C. (2009). Increased hippocampal, thalamic and prefrontal hemodynamic response to an urban noise stimulus in schizophrenia. American Journal of Psychiatry, 166 (3), 354-360.

Reite, M., Teale, P., Rojas, D.C., Reite, E., Asherin, R., Hernandez, O. (2009). MEG auditory evoked fields suggest altered structural/functional asymmetry in primary but not secondary auditory cortex in bipolar disorder. Bipolar Disorders, 11, 371-381.

*Wilson, T.W., Slason, E., Hernandez, O.O., Asherin, R., Reite, M.L., Teale, P.D. & Rojas, D.C. (2009). Aberrant high-frequency desynchronization of cerebellar cortices in early-onset psychosis. Psychiatry Research: Neuroimaging, 174(1), 47-56.

*Wilson, L.B., Tregellas, J.R., Hagerman, R.J., Rogers, S.J. & Rojas, D.C. (2009). A voxel-based morphometry comparison of regional gray matter between fragile X syndrome and autism. Psychiatry Research: Neuroimaging, 174(2), 138-145.

Cornier, M., Salzberg, A.K., Endly, D.C., Bessesen, D.H., Rojas, D.C. & Tregellas, J.R. (2009). The effects of overfeeding on the neuronal response to visual food cues in thin and reduced-obese individuals. PLoS One, 4(7):e6310, PMID: 19636426.

*Maharajh, K. Teale, P., Rojas, D.C. & Reite, M.L. (in press). Fluctuation of gamma-band phase-synchronization within the auditory cortex in schizophrenia. Clinical Neurophysiology.

NIH/NIMH 1 R01 MH082820-01A2 Rojas (PI), 12/01/09-1130/13

Neural synchrony dysfunction of gamma oscillations in autism

The major goal of this application is to characterize a new endophenotype for autism research based on MEG and EEG measures of gamma-band oscillatory dysfunction. Parents of children with autism will be compared to adults with autism and healty adults on potential biomarkers.

 

NIH/NIMH 1 R01 MH081920 Rojas-01A1 (PI), 6/1/09-5/31/13

Sensorimotor abnormalities in childhood onset psychiatric disorders

The major goal of this application is to measure, using MEG and MRI, neurobiological deficits underlying motor coordination deficits in childhood onset schizophrenia and bipolar disorder.

 

NARSAD Independent Investigator Award: Rojas (PI), 9/1/08-8/30/10

Gamma-band dysfunction in childhood-onset schizophrenia

The long-term objective of this project is to establish the relationship, if any, between MEG-based gamma-band electrophysiological activity as an endophenotype for schizophrenia and GABAergic dysfunction measured via MRS.

 

Autism Speaks Pilot Research Grant: Rojas (Co-PI), 9/1/07-8/30/09

Gamma-band synchronization as a local connectivity endophenotype in autism

The long-term objective of this project is to establish problems with gamma-band electrophysiological activity as an endophenotype for autism research by demonstrating the deficit in first-degree relatives.

 

Department of Veterans Affairs Merit Review Award: Tregellas (Role: Co-Investigator)

fMRI of Cholinergic Dysfunction in Schizophrenia

The objective of this VA MERIT award is to compare is to study the effects of cholinergic mechanisms on sensory gating in schizophrenia.

 

NIM/NIMH  5 R01 MH60214 Rojas (PI), 4/1/04-3/31/09

Functional Organization of Audition in Schizophrenia

The long-term objective of this project is to investigate the organization of the auditory cortex in patients with schizophrenia using magnetoencephalography, and to correlate changes in this organization to structural alterations based on MRI measurements and to auditory symptom experience.

 

NIH/NICHD 5 R01 MH47476 Reite (Role: Co-Investigator), 3/1/96-4/30/09

MEG Evoked Fields in Schizophrenia

The long-term objective of this project is to compare cerebral lateralization across multiple psychotic illnesses in adult patient groups, specifically schizophrenia, schizoaffective disorder, and bipolar disorder.   ​