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Figure 22 | BMC Neuroscience

Figure 22

From: Human sensory-evoked responses differ coincident with either "fusion-memory" or "flash-memory", as shown by stimulus repetition-rate effects

Figure 22

Sounds of different auditory stimuli, at different repetition-rates and at different percentage-jitters. The following files produce clicks that are at uniform rate, where the number is S/s. 2persec_click [see Additional file 17]

4persec_click [see Additional file 19]

6persec_click [see Additional file 21]

8persec_click [see Additional file 23]

10persec_click [see Additional file 25]

12persec_click [see Additional file 27]

14persec_click [see Additional file 29]

16persec_click [see Additional file 31]

18persec_click [see Additional file 33]

20persec_click [see Additional file 35]

22persec_click [see Additional file 37]

24persec_click [see Additional file 39]

26persec_click [see Additional file 41]

28persec_click [see Additional file 43]

30persec_click [see Additional file 45]

40persec_click [see Additional file 47]

50persec_click [see Additional file 49]

70persec_click [see Additional file 51]

90persec_click [see Additional file 53]

100persec_click [see Additional file 55]

The following audio files produce Dau-chirps that are at uniform rate, where the number is S/s. Same repetition-rates as for click's, above.

2persec_dau [see Additional file 18]

4persec_dau [see Additional file 20]

6persec_dau [see Additional file 22]

8persec_dau [see Additional file 24]

10persec_dau [see Additional file 26]

12persec_dau [see Additional file 28]

14persec_dau [see Additional file 30]

16persec_dau [see Additional file 32]

18persec_dau [see Additional file 34]

20persec_dau [see Additional file 36]

22persec_dau [see Additional file 38]

24persec_dau [see Additional file 40]

26persec_dau [see Additional file 42]

28persec_dau [see Additional file 44]

30persec_dau [see Additional file 46]

40persec_dau [see Additional file 48]

50persec_dau [see Additional file 50]

70persec_dau [see Additional file 52]

90persec_dau [see Additional file 54]

100persec_dau [see Additional file 56]

The following audio files show the effect of increasing the amount of jitter, using Dau-chirps at a mean rate of 40 S/s. The number indicates the percentage jitter. The uniform 40 S/s is also provided for convenience, as the "No jitter – uniform" file. The "MLS" Button is a Maximum-Length Sequence (= "m-sequence") of 511 stimuli, where the minimum interval is 25 ms (= 40 S/s).

It is notable that as the jitter is increased, not only is the "tone" diminished, but the quality of the stimulus-sensation changes. We conjecture that a minimum number of consecutive SIs are needed before fusion-memory "locks in", and that larger jitter prevents this.

"No jitter – uniform" [see Additional file 48]

"12percent jitter" [see Additional file 58]

"24percent jitter" [see Additional file 59]

"36percent jitter" [see Additional file 60]

"MLS" [see Additional file 57]

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