Seminars & Events
Thursday, September 11, 2014: Dr. Bevil Conway (Wellesley College) will speak on his research in visual neuroscience and color at 4:30 pm in Goodpaster Hall 195.
Monday, October 27, 2014: Dr. Todd Gould (University of Maryland Baltimore) will speak on "Genes to behaviors to treatments in bipolar disorder" at 4:45 pm in Goodpaster Hall 195.Friday, December 5, 2014: Dr. Brian Mathur (University of Maryland Baltimore) will speak on "Braking bad: Aberrant inhibitory neurotransmission in addiction" at 3:00 pm in Goodpaster Hall 195.
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.