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.
Dr. Gwen Calhoon '06 recently received her Ph.D. in Neuroscience from the University of Maryland Baltimore, and was inducted into Nu Rho Psi.
Severino, Amie (2011). Effects of ethanol on mechanoreceptor activity in the medicinal leech (Hirudo verbana). (Mentor: M. Baltzley)
Ethanol has diverse effects on the human nervous system. It has numerous effects on perception, sensation, behavior, and cognition. Knowing how ethanol affects invertebrate organisms helps understand its effects in humans. The majority of ethanol studies using invertebrates focus on motor effects, so the effects on sensation are less understood. Hirudo verbana, a type of medicinal leech, is an exceptional modeling system to examine the physiological effects of an acute, low-dose, ethanol exposure on the spontaneous firing patterns of mechanosensory cells. Action potential characteristics that may be altered by exposure of ethanol were examined in nociceptive (N) cells. The half-width of action potential afterhyperpolarizations were significantly increased by ethanol after the cell was exposed to ethanol and washed with saline. Though no other action potential characteristics were altered by exposure to ethanol, this finding is worth expanding research upon the subject of mechanosensory cell sensitivity to ethanol.