Nancy Fischbeck Feinstein

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The modern cephalopod mollusks (coleoids) are considered the most behaviorally advanced invertebrate, yet little is known about the neurophysiological basis of their behaviors. Previous work suggested that the vertical lobe (VL) of cephalopods is a crucial site for the learning and memory components of these behaviors. We are therefore studying the(More)
Attempts are being made to unravel the local circuitry of the suprachiasmatic nucleus, with a view toward eventually correlating specific neuronal systems with circadian events. Hence, the vasopressinergic innervation of this nucleus in the laboratory mouse has been analyzed immunocytochemically at the light and electron microscopical levels. Monoclonal(More)
Previous electrophysiological experiments have shown that in the abdominal extensor muscles of rock lobsters, axons which were cut in surviving animals do not degenerate peripherally for several months, but conduct action potentials and release transmitter quanta on stimulation closely distal to the scar. Electron micrographs from the axon distal to the(More)
The muscarinic acetylcholine receptors are important in a variety of physiological processes such as induction of secretion from various glands and regulation of pacemaker activity, muscle tone, and neurotransmission. To date, the muscarinic receptor family includes five members (designated m1-m5), of which m1-m4 are abundant in brain and in peripheral(More)
In this report we show that alpha-latrotoxin from black widow spider venom is a potent activator of neurotransmitter release in synaptosomes from the Torpedo electric organ. Binding of the purified toxin (5 nM) to the synaptosomal fraction occurs already at 4 degrees C and is dependent on the presence of divalent ions. However, neurotransmitter release(More)
Peripheral axons of lobsters can survive for many months after axotomy. We have investigated the structural and ultrastructural changes seen after axotomy using confocal microscopy and electron microscopy. While the proximal stump had a normal appearance, the distal part of the cut axon became lobulated, and glial cells penetrated the original glial tube(More)
Synaptotagmins are a gene family of membrane proteins with distinct expression patterns. Synaptotagmin I is an abundant protein of the synaptic vesicle membrane and was implicated as the Ca2+ sensor in fast responding synapses. Yet, its precise role along the synaptic vesicle life cycle is not fully understood. In this report we show that synaptotagmin I is(More)
OBJECTIVE To test a theoretical model examining processes through which a parent-focused educational-behavioral intervention [Creating Opportunities for Parent Empowerment (COPE)] relates to children's post-hospital adjustment problems. METHODS Mothers (n = 143) and their 2-7-year-old children, unexpectedly hospitalized in two pediatric intensive care(More)
Functional and immunocytochemical identification of glutamate autoreceptors of an NMDA type in crayfish neuromuscular junction. J. Neurophysiol. 80: 2893-2899, 1998. N-Methyl--aspartate (NMDA) reduces release from crayfish excitatory nerve terminals. We show here that polyclonal and monoclonal antibodies raised against the mammalian postsynaptic NMDA(More)