Seminars & Events

Friday, October 4, 2013: Dr. Laurie Ryan, SMCM '86 (National Institute on Aging) will speak on "Alzheimer's Disease: Targets and Treatments" at 3:00 pm in Goodpaster Hall 195.

Monday, October 21, 2013: Dr. Greg Elmer (University of Maryland Baltimore) will speak on "Domains and Constructs in Motivation: Where Does the Habenula Fit In?" at 4:45 pm in Goodpaster Hall 195

Friday, October 25, 2013:  Dr. Terry Davidson (American University) will speak on "Why We Overeat and Become Obese?  It Could be What We Think!" at 3:00 pm in Goodpaster Hall 195.

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Alumni Highlight

Dr. Gwen Calhoon '06 recently received her Ph.D. in Neuroscience from the University of Maryland Baltimore, and was inducted into Nu Rho Psi.

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SMP Spotlight

Katie Gluskin and Jeff Haus present their SMP
Katie Gluskin and Jeff Haus, "Entorhinal Cortex Lesions, Habituation, and Latent Inhibition," 2013. Gluskin and Haus, the 2013 co-winners of the Neuroscience Award, infused a neurotoxin into the entorhinal cortex of rats to induce a lesion, and measured the resulting habituation and latent inhibition behavior within a fear conditioning paradigm.

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Calhoon, G.G., & Brady, A.M.  (2006, April).  The effects of cognitive intervention in adolescence on behavioral abnormalities in a rat model of schizophrenia. Poster session presented at the Symposium for Young Neuroscientists and Professors of the Southeast (SYNAPSE), Davidson, NC.

Abstract

Clinical data suggest that schizophrenic patients who achieve high levels of education prior to onset of psychotic symptoms have better prognoses than patients who accomplished lower levels of education.  This raises the possibility that cognitive stimulation in adolescence may protect against the development of schizophrenic symptoms in adulthood.  The present study assessed the effects of cognitive intervention in adolescence on disrupted adult behaviors in a neurodevelopmental model of schizophrenia in rats.  Neonatal ventral hippocampus lesioned (NVHL) rats were trained in an attentional set-shifting task in the T-maze during adolescence, which served as the cognitive intervention.  Control NVHL rats were given equivalent time to explore the T-maze, but were not trained in the attentional set-shifting task.  In adulthood, rats were assessed for behaviors known to be disrupted in the model, including assessment of prepulse inhibition of the acoustic startle response, social interaction, novelty-induced hyperlocomotion, and working memory in the radial arm maze.  NVHL rats displayed impaired prepulse inhibition of the acoustic startle response compared to sham lesioned rats (p=.003).  In the social interaction task, NVHL rats exhibited decreased rearing and body contact (p=.001).  No differences between groups were found in novelty-induced hyperlocomotion.  Over 16 trials, lesioned rats performed worse in the radial arm maze task than shams, as indicated by total errors.  However, the performance of lesioned rats that had received cognitive intervention in adolescence was markedly improved (p=.032).  The results of the present study suggest that premorbid cognitive intervention may protect against the cognitive symptoms of schizophrenia.

View the poster (pdf format, 456KB)