Phase properties.

<p>A. Phase functions of neuron shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0116118#pone.0116118.g008" target="_blank">Fig. 8</a> (J140). Phase, derived from SVD (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0116118#pone.0116118.g008" target="_blank">Fig. 8B</a>), plotted as a function of velocity and density. For both directions, slopes correspond to temporal position (group delay) and spectral position (BF), see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0116118#pone.0116118.e008" target="_blank">Equation 8</a>. B. Temporal positions, or group delays, for upward versus those for downward sweep direction. C. Spectral positions for upward versus those for downward sweep direction. The spectral positions are between −1.25 and 1.25 octaves. When the difference between the two positions is > 1.25 octaves, a 2.5 octaves correction is made. D. Distribution of temporal phase constant θ (−180°<θ<−180°). F. Distribution of spectral phase constant φ (−90°<φ<90°).