Separable pupillary signatures of perception and action during perceptual multistability
- Michigan State University, Department of Psychology, United States
- Michigan State University, Neuroscience Program, United States
- Zurich Center for Neuroeconomics, Department of Economics, University of Zurich, Switzerland
- Vrije Universiteit Amsterdam, Netherlands
- Spinoza Centre for Neuroimaging, Royal Academy of Sciences, Netherlands
Figures
Figure 1
Experimental design and behavioral validation.
(A) Our two-by-two factorial design included both binocular rivalry and on-screen replay, and both conditions where switches in perception were behaviorally relevant and ones in which they were not. …
Figure 2
Pupil responses time locked to the perceptual switch.
(A) Pupil area as a function of time around the moment of the perceptual switch for all four conditions. (B) Rate of pupil size change on the same time axis. Black bars within each plot of panel B …
Figure 3
Per-observer summary data corresponding to the effects marked as significant (based on across-observer statistics) in the plots of Figure 2B.
For each time period during which the pupil area change rate differs significantly from 0, as marked in Figure 2B, this figure shows the average pupil area change rate of each individual observer …
Figure 4
Alternative analysis of the data underlying Figure 2, now concatenating pupil signals across conditions, and regressing key press events and (rivalry or on-screen) switch events separately.
This allows the pupil response associated with switches to be teased apart from the pupil response associated with key presses, even in the data from the Report conditions where the two consistently …
Figure 5
The relation between the pupil response associated with a perceptual switch and the duration of the perceptual dominance duration that preceded that switch.
(A) Each plot shows, for a different condition, pupil size surrounding the moment of a perceptual switch, separated out into three equal-sized groups of perceptual switches on the basis of the …
Figure 6
The relation between the pupil response associated with a perceptual switch and the duration of the perceptual dominance duration that follows that switch.
The organization of this figure is identical to that of Figure 5.
Appendix 1—figure 1
The impact of dot size probes on pupil size.
(A) Pupil area (top) and pupil area change rate (bottom) during the time period surrounding unreported dot size probes. The pupil change rate is not significant at any point in this period. (B) The …
Appendix 1—figure 2
Switch-related pupil responses for switches in various 'directions'.
(A) Switch-related pupil responses in both Ignore conditions, separated by the color/motion direction of the (perceived) stimulus following the switch (motion direction was yoked to color in our …
Appendix 1—figure 3
The role of blinks and saccades in shaping switch-related pupil responses.
(A) All linear models underlying the main text figures included designated regressors for blink events and saccade events. Pupil response shapes linked to those events are shown here for one of …
Appendix 1—figure 4
How performance of the OKN-based switch detection algorithm depends on flanking percept durations.
Here, we investigated whether the reported percept duration that precedes (gray) or follows (black) a given reported switch, affects the probability that that reported switch is accompanied by a …
Appendix 1—figure 5
Switch-related pupil responses (both pupil area, top, and pupil area change rate, bottom) estimated while using three different methods for identifying perceptual switches.
Although the OKN-based method is the only one that is available in all conditions, the match with the other two methods (based on manual report, and based on on-screen events) is good in those …
Appendix 1—figure 6
The per-observer pupil response curves that underlie the across-observer average curves of main text Figure 2A.
Each panel corresponds to one of the included observers, and the four curves within each panel correspond to the four conditions (see legend on top).
Appendix 1—figure 7
Re-analysis of the significant correlations between pupil response, and preceding (left and center plot) or subsequent (right plot) dominance duration, now separated out as a function of the observer's average percept duration.
Gray values quantify correlations between pupil change rate (z-scored area per second) and preceding or subsequent percept duration (z-scored); correlations that are also shown, but averaged across …
Appendix 1—figure 8
Pupil response associated with key presses in response to dot size probes in the Ignore conditions (both conditions combined).
Pupil size (top panel) and pupil change rate (center panel) around the time of key press events reporting a dot size probe. Bottom: correlation between pupil change rate (z-scored area per second) …
Appendix 1—figure 9
Perceptual mixtures: percepts that feature parts of both eyes' images.
Each plot uses a different measure to quantify the reported prevalence of perceptual mixtures for individual observers. Each disk corresponds to one observer. Data from the two observers that are …
