Plate 1 Temporospectral maps of amplitude variations of potentials recorded from the right primary auditory
cortex (leads 2, 3, and 6). Time, related in abscissae, is reduced to 175 ms, full scale. On the ordinate axis, each
yellow dot represents the frequency. Amplitude is represented by colour. A cubic spline interpolation is used in
order to obtain a continuous potential line between the different frequencies. Each spatial /reconstruction gives a
continuous map both in time and in frequency. Dark colors are values close to the neutral potential, and bright
colors are used for the activity—blue represents negativity and red represents positivity. The white arrow indicates
the beginning of the sound.
brent
(Brent)
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