|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 12. (A) (Top) Averaged vector plots (n=7) based on particle motions
caused by the vortex stimulus, (middle) raster plots of the responses to the
vortex stimulus and (bottom) the peri-stimulus–time histograms (PSTH;
bin width 20 ms) based on these raster plots. Zero indicates the time of valve
opening. Averaged particle motions were recorded immediately before (left PIV
image) and during (right PIV image) the non-reproducible bursts marked by the
ellipses in the raster plot. (B) Discharge rates (black traces) and water
velocities (gray traces) measured during the first (left graph) and seventh
(right graph) trial shown in A. During the initial decrease in neural activity
(90–190 ms after valve opening), water velocity was positive in both
cases, i.e. water flow at the level of the neuromasts was from head to tail.
During the following increase in neural activity, the direction of water flow
reversed. No correlation between the occurrence of late bursts and water flow
direction was apparent. Asterisks indicate the bursts marked with ellipses in
A.
|
