## Figure 2.
Stimuli of different taste qualities produce unique patterns of relative firing among
central gustatory neurons during the first second of stimulus processing. Here, spiking rates to oral stimulation with sucrose (a prototypical "sweet" stimulus),
NaCl ("salty"), HCl ("sour") or quinine ("bitter") were compared between taste neurons
recorded from the rat NST using a theoretic technique based on statistical decision
theory. This model bears on whether different cells fire at similar or reliably different
spike rates when under the drive of a particular stimulus. The outcome of this analysis
as applied to all possible neuron pairs among six randomly-selected cells is represented
graphically as a set of half-matrices. A blackened matrix element represents that
the i^{th }neuron (denoted along the matrix columns) of a particular pair fired at a detectably
faster rate than the j^{th }(rows). A non-shaded element denotes similar spike rates (not different) between neurons,
whereas halftone shading indicates that the j^{th }fired detectably faster than the i^{th}. It can be seen that different stimuli produce unique relative response relationships
among these cells. A downstream processor of these neurons with knowledge of the stimulus
associated with each response relationship could, in principle, compute discriminations
among these stimuli. Reprinted from [40], with permission of the Journal of Neuroscience.
Lemon and Katz |