In addition, autoreactive B cells can be rescued from deletion by accumulation and continuous presentation of apoptotic material on the surface of follicular dendritic cells in germinal centers, as well as by TLR-9 mediated activation by DNA and HMGB-1 [ 6, 15– 17].
In the second experiment, each trial started with 90 s of continuous presentation of the rivalrous stimuli, followed by a 180-s period of intermittent presentation and another 90 s of continuous presentation.
In order to investigate this aural phenomenon, fMRI time series were acquired during presentation of a conventional block-designed paradigm as well as during continuous presentation of Shepard's tones.
In this study, we utilized two approaches for exposure-response modeling: quintile presentation of the exposure and continuous presentation of the exposure fitting semi-parametric models.
Sessions consisted of blocks of intermittent presentation of an ambiguous stimulus, interleaved with periods of continuous presentation where perception was allowed to switch spontaneously.
Hence, perception during the current intermittent presentation sequence should depend on the previous winner as well as on perception during the intervening period of continuous presentation.
The influence of the final percept of a continuous presentation period dissipates within a few intermittent presentations, or about 10 seconds.
Figure 2e (blue curve) quantifies how this memory decay progressed over time, by depicting the same probability as a function of the duration of the intervening continuous presentation episode, for one representative subject.
In other words, the longer the final percept of the continuous presentation episode dominated before stimulus offset, the more likely it was to remain stabilized during the subsequent intermittent presentation sequence, replicating [3].
Like Figure 2e, Figure 3a shows the probability that the current intermittent presentation sequence is won by the winner of the previous intermittent presentation sequence, as a function of the intervening continuous presentation duration.
