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Temporal Structure in the Input to Vision Can Promote Spatial Grouping [chapter]

Randolph Blake, Sang-Hun Lee
2000 Lecture Notes in Computer Science  
Next, we turn to our very recent studies using stochastic temporal structure, the results from which provide the most compelling demonstrations to date for the role of temporal structure in spatial grouping  ...  (d) Marked point process.  ...  Appendix: Time-Varying Signals and Information Theory Throughout this chapter we employ the term "temporal structure" in reference to spatial grouping.  ... 
doi:10.1007/3-540-45482-9_64 fatcat:ifj7knvgxnehlh5xwqdfke3yte

Running as fast as it can: How spiking dynamics form object groupings in the laminar circuits of visual cortex

Jasmin Léveillé, Massimiliano Versace, Stephen Grossberg
2010 Journal of Computational Neuroscience  
Perceptual grouping is a challenge for spiking cells because its properties of collinear facilitation and analog sensitivity occur in response to binary spikes with irregular timing across many interacting  ...  Some models have demonstrated spiking dynamics in recurrent laminar neocortical circuits, but not how perceptual grouping occurs.  ...  Introduction: perceptual grouping in the laminar circuits of visual cortex From Spikes to Behavior: The Challenge Posed by Perceptual Grouping.  ... 
doi:10.1007/s10827-009-0211-1 pmid:20111896 fatcat:lfxr54ucn5eofokrdaflwbcqei

Spatial versus temporal grouping in a modified Ternus display

Julian M. Wallace, Nicholas E. Scott-Samuel
2007 Vision Research  
of the outer element (Experiment 3) to the extent that group motion was not perceived even with large orientation changes over time that previously led to group motion (Experiment 4).  ...  The Ternus display can induce a percept of 'element motion' or 'group motion'. Conventionally, this has been attributed to two different motion processes, with different spatial and temporal ranges.  ...  This work was supported by Biotechnology and Biological Sciences Research Council Grant BBS/B/08795 to NSS. The authors thank two anonymous reviewers for their helpful comments.  ... 
doi:10.1016/j.visres.2007.05.016 pmid:17632201 fatcat:wmbzinoevref5f3q72b6fky3ra

Temporal synchrony is an effective cue for grouping and segmentation in the absence of form cues

Reuben Rideaux, David R. Badcock, Alan Johnston, Mark Edwards
2016 Journal of Vision  
The results show that temporal synchrony (in isolation) is an effective cue for grouping local elements together to extract a global signal.  ...  ., temporal synchrony, has been shown to be a powerful cue for grouping and segmentation. This has been demonstrated with both static and dynamic stimuli for a range of tasks.  ...  That is, after a synchronous event segments signal from noise, how long is that segmentation perceptually maintained without subsequent/additional grouping properties?  ... 
doi:10.1167/16.11.23 pmid:27690163 fatcat:eoqtwogv4natnouaucpgrwbq7q

A cyclopean visual saltation illusion reveals perceptual grouping in three-dimensional space

S. K. Khuu, J. C. Kidd, J. Phu, S. Khambiye
2010 Journal of Vision  
Our results demonstrate the appearance of 3D saltation, and that the illusion represents a process in which higher cortical areas feed back to activate lower level inputs to achieve 3D perceptual "filling  ...  This effect was also observed when the two locations in depth have no lateral 2D separation (Experiment 2).  ...  of New South Wales to S.  ... 
doi:10.1167/10.14.26 pmid:21191136 fatcat:7wf7qmk3mvfzjntpadm5u4t7vy

Page 1385 of Psychological Abstracts Vol. 79, Issue 4 [page]

1992 Psychological Abstracts  
Anomalous contours were not perceptually equivalent to the real ones.  ...  discrimi- nation-relevant information.  ... 

Effects of altered auditory feedback across effector systems: Production of melodies by keyboard and singing

Peter Q. Pfordresher, James T. Mantell
2012 Acta Psychologica  
Effects of AAF in both tasks replicated results previously found for keyboard performance (Pfordresher, 2003) , in that asynchronous (delayed) feedback slowed timing whereas alterations to feedback pitch  ...  increased error rates, and the effect of asynchronous feedback was similar in magnitude across tasks.  ...  We are grateful to Anastasiya Kobrina for help with data analysis and to Thomas Varco who arranged the singing AAF paradigm.  ... 
doi:10.1016/j.actpsy.2011.10.009 pmid:22100135 fatcat:d3ajzuq77ra63ilogsde2wblay

Bayesian natural selection and the evolution of perceptual systems

W. S. Geisler, R. L. Diehl
2002 Philosophical Transactions of the Royal Society of London. Biological Sciences  
In recent years, there has been much interest in characterizing statistical properties of natural stimuli in order to better understand the design of perceptual systems.  ...  Here we propose a formal framework for analysing how the statistics of natural stimuli and the process of natural selection interact to determine the design of perceptual systems.  ...  , p(d,f ,u |c), or given that they belong to different physical contours, p(d,f ,u | | c).  ... 
doi:10.1098/rstb.2001.1055 pmid:12028784 pmcid:PMC1692963 fatcat:7wncr5ufhzbnfbhzvjlegpkheu

The Influence of Temporal Phase Differences on Texture Segmentation

UTE LEONARDS, WOLF SINGER, MANFRED FAHLE
1996 Vision Research  
Pattern elements constituting individual perceptual objects need to be segregated from those of other objects and the background and have to be bound together for further joint evaluation.  ...  Scene segmentation and perceptual grouping are important operations in visual processing.  ...  So far only few psychophysical studies have addressed the question to which extent perceptual grouping is influenced by the temporal structure of the visual stimulus and the results are controversial.  ... 
doi:10.1016/0042-6989(96)86829-5 pmid:8917756 fatcat:hggog7b6g5hq3loesi3osfytxa

Synchrony Unbound

Michael N. Shadlen, J.Anthony Movshon
1999 Neuron  
Acknowledgments Preparation of this paper was supported by grants from the National Institutes of Health (EY02017, EY11378, RR00166) and by the McKnight Foundation.  ...  We are grateful to Wyeth Bair, Carlos Brody, Eb Fetz, Josh Gold, Lynne Kiorpes, Bill Newsome, Robert Rafal, and Alex Reyes for their helpful advice and comments.  ...  The local contour motion is ambiguous until these features information from memory about the nature and structure are bound to a common object.  ... 
doi:10.1016/s0896-6273(00)80822-3 pmid:10677027 fatcat:ygyid7672rev7op2qy3yjqy5he

Segregation by onset asynchrony

P. J. B. Hancock, L. Walton, G. Mitchell, Y. Plenderleith, W. A. Phillips
2008 Journal of Vision  
Fourth, asynchronous onsets aligned with the path could be discriminated from those lying on the path but not aligned with it.  ...  Two pseudorandom arrays of Gabor patches are displayed, to left and right of fixation.  ...  The gray scale was linearized from maximum brightness (gray level 255, 65 cd/m 2 ) down to gray level 8 (2 cd/m 2 ), and the test room was lit by diffuse lighting at approximately 10 Lux.  ... 
doi:10.1167/8.7.21 pmid:19146254 fatcat:xapgystq55ck3n3cxdqvkipld4

Neuronal Synchrony: A Versatile Code for the Definition of Relations?

Wolf Singer
1999 Neuron  
from multiple units are considered. These include multi-  ...  of (1) apparent conflict between the psychophysical studies to what extent temporal contiguity of stimuli is exploited that support grouping based on temporal cues (see for perceptual grouping and (2)  ...  integration and plasticity, sion in the millisecond range; (2) respond more readily to identify the nature of dynamic interactions among to synchronous than to asynchronous input; (3) treat reciprocally  ... 
doi:10.1016/s0896-6273(00)80821-1 pmid:10677026 fatcat:4pvvipzyrvh6zcdcynq4e5ad7m

Time, our lost dimension: Toward a new theory of perception, attention, and memory

Mari R. Jones
1976 Psychological review  
Nevertheless, their most immediate relevance is to research and theory in speech and auditory pattern perception.  ...  These rhythms can be synchronized to corresponding nested time zones within world pattern structure.  ...  : 1245 or I245I"2"4"5" l"2"4"5" PATTERN 2 I I" 2 2" 4 4" 5 5" Optimal Serial Structure'• d)Rate: 10 tones/sec " 2 2" 4 4" 5 5" Optimal Serial Structure: 1245 l"2"4"5" FIGTJKE 4.  ... 
doi:10.1037/0033-295x.83.5.323 fatcat:wltut7jexzexpcxkawzzududqm

Time, our lost dimension: Toward a new theory of perception, attention, and memory

Mari R. Jones
1976 Psychological review  
Nevertheless, their most immediate relevance is to research and theory in speech and auditory pattern perception.  ...  These rhythms can be synchronized to corresponding nested time zones within world pattern structure.  ...  : 1245 or I245I"2"4"5" l"2"4"5" PATTERN 2 I I" 2 2" 4 4" 5 5" Optimal Serial Structure'• d)Rate: 10 tones/sec " 2 2" 4 4" 5 5" Optimal Serial Structure: 1245 l"2"4"5" FIGTJKE 4.  ... 
doi:10.1037//0033-295x.83.5.323 fatcat:bm6fhk2xgfffteappfe53kkqbe

A computational feature binding model of human texture perception

J�rg Ontrup, Heiko Wersing, Helge Ritter
2004 Cognitive Processing  
The examples range from classical microtextures and Brodatz textures to other classical Gestalt stimuli, which offer a new perspective on the role of texture for more abstract similarity grouping.  ...  In the second stage, features are grouped according to the spatial feature binding model of the Competitive Layer Model (CLM) (Wersing, Steil, & Ritter, 2001) .  ...  The third group (dark gray) expresses the horizontal structure generated from the background. Therefore, the perceptual grouping of this image mirrors the human introspection very well.  ... 
doi:10.1007/s10339-003-0003-x fatcat:bl337gkyfzct5eayemfqb5rgwi
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