Normal aging is characterized with a decline in hippocampal memory functions that is associated with changes in long-term potentiation (LTP) of the CA3-to-CA1 synapse. Age-related deficit of the dopaminergic system may contribute to impairment of CA1 LTP. Here we assessed how the modulation of CA1 LTP by dopamine is affected by aging and how it is dependent on the Ca2+ source. In slices from ad...

Cyanide-resistant O(2) consumption can be stimulated by either treating whole white potato tubers (Norchip) with ethylene, in the presence of 100% O(2), or aging slices obtained from untreated potato tubers. A comparison of alternative pathway activity elicited by either treatment was undertaken. The proportion of electrons flowing through the alternative path in the presence of intermediate co...

When computing program slices on all variables in a system, we observed that many of these slices are the same. This leads to the question: Are we looking at software clones? We discuss the genesis of this phenomena and present some of the data observations that led to the question. The answer to our query is not immediately clear. We end by presenting arguments both pro and con. Supporting the...

In this paper several classes of fuzzy functions are studied and related to the computations of a fuzzy Turing machine. These classes are put into relation with the ones previously proposed in the literature.

homogenates. Some of the limitations of these preparations are: 1) lack of certain inputs and outputs normally existing in the intact brain; 2) certain portions of the sliced tissue, especially the top and bottom surfaces of the slice, are damaged by the slicing action itself; 3) the life span of a brain slice is limited and the tissue gets "older" at a much faster rate than the whole animal; 4...