PMID- 15901783 OWN - NLM STAT- MEDLINE DCOM- 20060323 LR - 20181113 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 25 IP - 20 DP - 2005 May 18 TI - Tuft calcium spikes in accessory olfactory bulb mitral cells. PG - 5024-8 AB - The mammalian accessory olfactory system is critical for the detection and identification of pheromones and the representation of complex stimuli including sex, genetic relatedness, and individual identity. Mitral cells, the principal cells of the accessory olfactory bulb (AOB), receive monosynaptic input from the sensory periphery and already show highly specific response properties, firing selectively for combinations of genetic markers and gender-specific cues. Vomeronasal sensory neuron axons form synapses onto distal tuft-like branches of mitral cell primary dendrites. We have studied dendritic excitability and synaptic integration in AOB mitral cell dendrites, and we show that dendrites of accessory olfactory bulb mitral cells support action potential propagation and can fire regenerative spike-like events that are likely to contribute to the integration of inputs to these cells. These tuft spikes may be important for the specificity of AOB mitral cell responses. FAU - Urban, Nathaniel N AU - Urban NN AD - Department of Biological Sciences and Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA. nurban@cmu.edu FAU - Castro, Jason B AU - Castro JB LA - eng GR - R01 DC005798/DC/NIDCD NIH HHS/United States GR - R21 DC006631/DC/NIDCD NIH HHS/United States GR - R01 DC005798-01/DC/NIDCD NIH HHS/United States GR - R21 DC006631-01/DC/NIDCD NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - SY7Q814VUP (Calcium) SB - IM MH - Action Potentials/*physiology MH - Animals MH - Animals, Newborn MH - Axons/physiology MH - Calcium/*metabolism MH - Dendrites/physiology MH - Electric Stimulation/methods MH - Image Processing, Computer-Assisted/methods MH - In Vitro Techniques MH - Mice MH - Neurons/cytology/*physiology MH - Olfactory Bulb/*cytology MH - Patch-Clamp Techniques/methods MH - Presynaptic Terminals/physiology PMC - PMC1262639 MID - NIHMS2425 EDAT- 2005/05/20 09:00 MHDA- 2006/03/24 09:00 PMCR- 2005/11/18 CRDT- 2005/05/20 09:00 PHST- 2005/05/20 09:00 [pubmed] PHST- 2006/03/24 09:00 [medline] PHST- 2005/05/20 09:00 [entrez] PHST- 2005/11/18 00:00 [pmc-release] AID - 25/20/5024 [pii] AID - 10.1523/JNEUROSCI.0297-05.2005 [doi] PST - ppublish SO - J Neurosci. 2005 May 18;25(20):5024-8. doi: 10.1523/JNEUROSCI.0297-05.2005.