Visual and nonvisual factors in perisaccadic compression of space

Lappe, Markus; Michels, Lars; Awater, Holger

doi:10.1017/cbo9780511750540.004

Cited by 4 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, when visual references are available, a stimulus flashed spatially before the saccade target is displaced in the direction of the saccade whereas a bar flashed spatially beyond the target is displaced in the opposite direction (e.g., Lappe, Awater, & Krekelberg, 2000;. This peri-saccadic compression has been investigated by manipulating visual characteristics of stimuli such as contrast (Michels & Lappe, 2004), color (Lappe, Kuhlmann, Oerke, & Kaiser, 2006), luminance (Georg, Hamker, & Lappe, 2008), or by manipulating the modality of the localization report: verbal reporting of the position or the number of bars (Awater, Burr, Lappe, Morrone, & Goldberg, 2005;Matsumiya & Uchikawa, 2001;, manual pointing (Bruno & Morrone, 2007), mouse pointing (Lappe et al, 2000;Ostendorf, Fischer, Finke, & Ploner, 2007;Reeve, Clark, & O'Regan, 2008), or saccade targeting (Awater & Lappe, 2006;Lappe, Michels, & Awater, 2009).…”

Section: Introductionmentioning

confidence: 99%

The spatial pattern of peri-saccadic compression for small saccades

Lavergne¹,

Vergilino-Perez²,

Lappe³

et al. 2010

Journal of Vision

View full text Add to dashboard Cite

In the temporal vicinity of a saccade onset, visual stability is transiently disrupted and briefly flashed visual stimuli undergo a systematic perceptual mislocalization. Specifically, when a stimulus is flashed around saccade onset, localization judgments are grossly biased toward the saccade endpoint. This peri-saccadic compression increases with saccade amplitude. Previous studies of peri-saccadic compression have typically used rather large saccade amplitudes. In the present study, we investigate systematically the pattern of errors for small saccade sizes (2°-10°), taking into account both the amplitude of the saccade and the position of the flashed stimulus (11 positions tested from 1 to 12°). Our results show a weaker compression effect for the smallest saccades. Moreover, we found that the strength of the compression depends on both stimulus side and relative distance to the saccade target.

show abstract

Section: Introductionmentioning

confidence: 99%

The spatial pattern of peri-saccadic compression for small saccades

Lavergne¹,

Vergilino-Perez²,

Lappe³

et al. 2010

Journal of Vision

View full text Add to dashboard Cite

show abstract

“…In the current experiments, the reference bar acts as a strong visual attractor. For saccadic compression, it has been suggested that attraction is dependent on extra-retinal signals: corollary discharge or predictive eye position information that build up strong modulatory signals around the endpoint of the saccade (e.g., Morrone et al, 1997 ; Lappe et al, 2010 ). Accordingly, compression was found to be centered on locations in empty space in saccadic adaptation and anti-saccade paradigms (Awater and Lappe, 2004 ; Awater et al, 2005 ).…”

Section: Discussionmentioning

confidence: 99%

“…It has been suggested that compression reflects an underestimation of relative distance rather than a mislocalization of the absolute position of the probe (Lappe et al, 2010 ). Along similar lines, we recently proposed that compression may reflect an underestimation of distance due to a lack of perceived apparent motion seen between the reference and the subsequently presented probe (Zimmermann et al, 2014a ; Born et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

“…After disturbances in the visual input stream, the visual system needs to retrieve the new locations of current targets to connect locations and identities before and after, thus bridging the interruption. In a similar vein, models of saccadic compression critically assume a role for the integration of pre- with post-saccadic visual input (Lappe et al, 2010 ; Cicchini et al, 2013 ). Other phenomena, such as change blindness (Rensink et al, 1997 ) demonstrate the challenges of such visual disruptions for perception.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Compression of Space for Low Visibility Probes

Born

Krüger

Zimmermann³

et al. 2016

Front. Syst. Neurosci.

View full text Add to dashboard Cite

Stimuli briefly flashed just before a saccade are perceived closer to the saccade target, a phenomenon known as perisaccadic compression of space (Ross et al., 1997). More recently, we have demonstrated that brief probes are attracted towards a visual reference when followed by a mask, even in the absence of saccades (Zimmermann et al., 2014a). Here, we ask whether spatial compression depends on the transient disruptions of the visual input stream caused by either a mask or a saccade. Both of these degrade the probe visibility but we show that low probe visibility alone causes compression in the absence of any disruption. In a first experiment, we varied the regions of the screen covered by a transient mask, including areas where no stimulus was presented and a condition without masking. In all conditions, we adjusted probe contrast to make the probe equally hard to detect. Compression effects were found in all conditions. To obtain compression without a mask, the probe had to be presented at much lower contrasts than with masking. Comparing mislocalizations at different probe detection rates across masking, saccades and low contrast conditions without mask or saccade, Experiment 2 confirmed this observation and showed a strong influence of probe contrast on compression. Finally, in Experiment 3, we found that compression decreased as probe duration increased both for masks and saccades although here we did find some evidence that factors other than simply visibility as we measured it contribute to compression. Our experiments suggest that compression reflects how the visual system localizes weak targets in the context of highly visible stimuli.

show abstract

Suppression of displacement detection in the presence and absence of eye movements: a neuro-computational perspective

Bergelt

Hamker

2016

Biol Cybern

View full text Add to dashboard Cite

Understanding the subjective experience of a visually stable world during eye movements has been an important research topic for many years. Various studies were conducted to reveal fundamental mechanisms of this phenomenon. For example, in the paradigm saccadic suppression of displacement (SSD), it has been observed that a small displacement of a saccade target could not easily be reported if this displacement took place during a saccade. New results from Zimmermann et al. (J Neurophysiol 112(12):3066-3076, 2014) show that the effect of being oblivious to small displacements occurs not only during saccades, but also if a mask is introduced while the target is displaced. We address the question of how neurons in the parietal cortex may be connected to each other to account for the SSD effect in experiments involving a saccade and equally well in the absence of an eye movement while perception is disrupted by a mask.

show abstract

Visual and nonvisual factors in perisaccadic compression of space

Cited by 4 publications

References 34 publications

The spatial pattern of peri-saccadic compression for small saccades

The spatial pattern of peri-saccadic compression for small saccades

Compression of Space for Low Visibility Probes

Suppression of displacement detection in the presence and absence of eye movements: a neuro-computational perspective

Contact Info

Product

Resources

About