Fig. 6.

The I-pattern generator can be triggered and paced by delayed PB inputs during the E phase. A: example showing initiation of the I phase by delayed pulse trains triggered from the onset of the E phase. B: superimposed PNGs for the data of C show essentially no change in peak PNG at any of the delays. C: Te data show the consistency of the control of Te for the delays indicated. During the apneic periods (gaps in the PNG burst rate caused by ending the stimulus protocol) it was necessary to trigger the I phase to initiate a subsequent series of delayed PB inputs. Changes in Ti were very moderate.