During 1993 and 1995 LEP was run at 3 energies near the Z \(^0\) peak in order to give improved m... more During 1993 and 1995 LEP was run at 3 energies near the Z \(^0\) peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z \(^0\) peak. In total DELPHI accumulated data corresponding to an integrated luminosity of approximately 116 pb \(^{-1}\) . Analyses of the hadronic cross-sections and of the cross-sections and forward-backward asymmetries in the leptonic channels used the most precise evaluations of the LEP energies. In the dimuon channel, events with a photon radiated from the initial state have been used to probe the cross-sections and asymmetries down to PETRA energies. Model independent fits to all DELPHI lineshape and asymmetry data from 1990 to 1995 have been carried out giving values of the resonance parameters: \begin{eqnarray*} M_Z & = & 91.1863\pm0.0028{\mbox{\rm{GeV}}} {\mbox{\rm{GeV}}} & = & 2.4876\pm0.0041{\mbox{\rm{GeV}}} \sigma_{0} & = & 41.578\pm0.069{\mbox{\rm{nb}}} R_l & = & 20.730\pm0.060 {\rm{A^{0}_{\mbox{\scriptsize FB}}}} & = & 0.0187\pm0.0019. \end{eqnarray*} These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2003
Backfills of the cerebral-buccal connective (CBC) of Aplysia californica revealed a cluster of fi... more Backfills of the cerebral-buccal connective (CBC) of Aplysia californica revealed a cluster of five to seven pedal-buccal projection neurons in the anterolateral quadrant of the ventral surface of each pedal ganglion. Intra- and extracellular recordings showed that the pedal-buccal projection neurons shared common electrophysiological properties and synaptic inputs. However, they exhibited considerable heterogeneity with respect to their projection patterns. All pedal-buccal projection neurons that were tested received a slow excitatory postsynaptic potential from the ipsi- and contralateral cerebral-pedal regulator (C-PR) neuron, a cell that is thought to play a key role in the generation of a food-induced arousal state. Tests were conducted to identify potential synaptic follower neurons of the pedal-buccal projection neurons in the cerebral and buccal ganglia, but none were detected. Finally, nerve recordings revealed projections from the pedal-buccal projection neurons in the nerves associated with the buccal ganglion. In tests designed to determine the functional properties of these peripheral projections, no evidence was obtained supporting a mechanosensory or proprioceptive role and no movements were observed when they were fired. It is proposed that peripheral elements utilized in consummatory phases of Aplysia feeding may be directly influenced by a neuronal pathway that is activated during the food-induced arousal state.
During 1993 and 1995 LEP was run at 3 energies near the Z \(^0\) peak in order to give improved m... more During 1993 and 1995 LEP was run at 3 energies near the Z \(^0\) peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z \(^0\) peak. In total DELPHI accumulated data corresponding to an integrated luminosity of approximately 116 pb \(^{-1}\) . Analyses of the hadronic cross-sections and of the cross-sections and forward-backward asymmetries in the leptonic channels used the most precise evaluations of the LEP energies. In the dimuon channel, events with a photon radiated from the initial state have been used to probe the cross-sections and asymmetries down to PETRA energies. Model independent fits to all DELPHI lineshape and asymmetry data from 1990 to 1995 have been carried out giving values of the resonance parameters: \begin{eqnarray*} M_Z & = & 91.1863\pm0.0028{\mbox{\rm{GeV}}} {\mbox{\rm{GeV}}} & = & 2.4876\pm0.0041{\mbox{\rm{GeV}}} \sigma_{0} & = & 41.578\pm0.069{\mbox{\rm{nb}}} R_l & = & 20.730\pm0.060 {\rm{A^{0}_{\mbox{\scriptsize FB}}}} & = & 0.0187\pm0.0019. \end{eqnarray*} These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2003
Backfills of the cerebral-buccal connective (CBC) of Aplysia californica revealed a cluster of fi... more Backfills of the cerebral-buccal connective (CBC) of Aplysia californica revealed a cluster of five to seven pedal-buccal projection neurons in the anterolateral quadrant of the ventral surface of each pedal ganglion. Intra- and extracellular recordings showed that the pedal-buccal projection neurons shared common electrophysiological properties and synaptic inputs. However, they exhibited considerable heterogeneity with respect to their projection patterns. All pedal-buccal projection neurons that were tested received a slow excitatory postsynaptic potential from the ipsi- and contralateral cerebral-pedal regulator (C-PR) neuron, a cell that is thought to play a key role in the generation of a food-induced arousal state. Tests were conducted to identify potential synaptic follower neurons of the pedal-buccal projection neurons in the cerebral and buccal ganglia, but none were detected. Finally, nerve recordings revealed projections from the pedal-buccal projection neurons in the nerves associated with the buccal ganglion. In tests designed to determine the functional properties of these peripheral projections, no evidence was obtained supporting a mechanosensory or proprioceptive role and no movements were observed when they were fired. It is proposed that peripheral elements utilized in consummatory phases of Aplysia feeding may be directly influenced by a neuronal pathway that is activated during the food-induced arousal state.
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