The effect of active selection in human path integration.

abstract：:In natural vision, continuously changing input is generated by fast saccadic eye movements and slow drifts. We analyzed effects of fixational saccades, voluntary saccades, and drifts on the activity of macaque V1 neurons. Effects of fixational saccades and small voluntary saccades were equivalent. In the presence of a...

journal_title：Journal of vision

authors： Kagan I,Gur M,Snodderly DM

更新日期：2008-11-27 00:00:00

abstract：:Visual stimuli may produce strong and reliable effects on subsequent actions irrespective of their visibility. This dissociation between action priming and conscious perception of the stimuli suggests two ways of processing of visual stimuli. One way of processing leads to the emergence of conscious visual perception,...

journal_title：Journal of vision

authors： Becker N,Mattler U

更新日期：2019-05-01 00:00:00

abstract：:Here we examine how global translational motion sensitivity varies with the spatial frequency of the elements in local motion and on the eccentricity of stimulation. Using DC-balanced, spatially narrowband elements (radial log Gabors) matched in terms of multiples above contrast threshold, we show that global translat...

journal_title：Journal of vision

authors： Hess RF,Aaen-Stockdale C

更新日期：2008-04-17 00:00:00

abstract：:Stimuli appearing in the surround of the classical receptive field (CRF) can reduce neuronal firing and perceived contrast of a preferred stimulus in the CRF, a phenomenon referred to as surround suppression. Suppression is greatest when the surrounding stimulus has the same orientation and spatial frequency (SF) as t...

journal_title：Journal of vision

authors： Flevaris AV,Murray SO

更新日期：2015-01-28 00:00:00

abstract：:A series of seven experiments explored search for opaque targets among transparent distractors or vice versa. Static stimuli produced very inefficient search. With moving items, search for an opaque target among transparent distractors was quite efficient while search for transparent targets was less efficient (Experi...

journal_title：Journal of vision

authors： Wolfe JM,Birnkrant RS,Kunar MA,Horowitz TS

更新日期：2005-03-30 00:00:00

abstract：:Crowding is the inability to identify an object among flankers in the periphery. It is due to inappropriate incorporation of features from flanking objects in perception of the target. Crowding is characterized by measuring critical spacing, the minimum distance needed between a target and flankers to allow recognitio...

journal_title：Journal of vision

authors： Rosen S,Chakravarthi R,Pelli DG

更新日期：2014-12-10 00:00:00

abstract：:We rely on color to select objects as the targets of our actions (e.g., the freshest fish, the ripest fruit). To be useful for selection, color must provide accurate guidance about object identity across changes in illumination. Although the visual system partially stabilizes object color appearance across illuminatio...

journal_title：Journal of vision

authors： Radonjić A,Cottaris NP,Brainard DH

更新日期：2015-01-01 00:00:00

abstract：:The first two areas of the primate visual cortex (V1, V2) provide a paradigmatic example of hierarchical computation in the brain. However, neither the functional properties of V2 nor the interactions between the two areas are well understood. One key aspect is that the statistics of the inputs received by V2 depend o...

journal_title：Journal of vision

authors： Coen-Cagli R,Schwartz O

更新日期：2013-07-15 00:00:00

abstract：:Studies of perceptual learning have revealed a great deal of plasticity in adult humans. In this study, we systematically investigated the effects and mechanisms of several forms (trial-by-trial, block, and session rewards) and levels (no, low, high, subliminal) of monetary reward on the rate, magnitude, and generaliz...

journal_title：Journal of vision

authors： Zhang P,Hou F,Yan FF,Xi J,Lin BR,Zhao J,Yang J,Chen G,Zhang MY,He Q,Dosher BA,Lu ZL,Huang CB

更新日期：2018-08-01 00:00:00

abstract：:We investigated how the visual-motor system recruits a novel visual feedback cue for a manual control task. We presented conditions in which an arbitrary cue (color) was coupled with task-relevant feedback (position or velocity), and measured the effect of the novel cue on performance. Participants used a joystick to ...

journal_title：Journal of vision

authors： Li WO,Saunders JA,Li L

更新日期：2009-09-10 00:00:00

abstract：:In the peripheral visual field, nearby objects can make one another difficult to recognize (crowding) in a manner that critically depends on their separation. We manipulated the apparent separation of objects using the illusory shifts in perceived location that arise from local motion to determine if crowding depends ...

journal_title：Journal of vision

authors： Dakin SC,Greenwood JA,Carlson TA,Bex PJ

更新日期：2011-08-08 00:00:00

abstract：:Features of moving objects are non-retinotopically integrated along their motion trajectories as demonstrated by a variety of recent studies. The mechanisms of non-retinotopic feature integration are largely unknown. Here, we investigated the role of attention in non-retinotopic feature integration by using the sequen...

journal_title：Journal of vision

authors： Otto TU,Öğmen H,Herzog MH

更新日期：2010-10-01 00:00:00

abstract：:What is the relationship between object segmentation and recognition? First, we develop a feature segmentation method that parses faces into features and, in doing so, attempts to approximate human performance. This segmentation-based approach allows us to build featural representations that make explicit the part-who...

journal_title：Journal of vision

authors： Nestor A,Tarr MJ

更新日期：2008-05-23 00:00:00

abstract：:There has been considerable controversy regarding whether children with autism spectrum disorder (ASD) and typically developing children (TD) show different eye movement patterns when processing faces. We investigated ASD and age- and IQ-matched TD children's scanning of faces using a novel multi-method approach. We f...

journal_title：Journal of vision

authors： Yi L,Fan Y,Quinn PC,Feng C,Huang D,Li J,Mao G,Lee K

更新日期：2013-08-08 00:00:00

abstract：:Our recent psychophysical experiments have identified differences in the spatial summation characteristics of pattern detection and position discrimination tasks performed with rotating, expanding, and contracting stimuli. Areas MT and MST are well established to be involved in processing these stimuli. fMRI results h...

journal_title：Journal of vision

authors： Harvey BM,Braddick OJ,Cowey A

更新日期：2010-05-01 00:00:00

abstract：:The visual span for reading is the number of letters that can be recognized without moving the eyes and is hypothesized to impose a sensory limitation on reading speed. Factors affecting the size of the visual span have been studied using alphabet letters. There may be common constraints applying to recognition of oth...

journal_title：Journal of vision

authors： Wang H,He X,Legge GE

更新日期：2014-07-03 00:00:00

abstract：:There is conflicting evidence in the literature regarding the role played by attention in perceptual learning. To further examine this issue, we independently manipulated exogenous and endogenous attention and measured the rate of perceptual learning of oriented Gabor patches presented in different quadrants of the vi...

journal_title：Journal of vision

authors： Mukai I,Bahadur K,Kesavabhotla K,Ungerleider LG

更新日期：2011-01-31 00:00:00

abstract：:In motion transparency, one surface is very often seen on top of the other in spite of no proper depth cue in the display. We investigated the dynamics of depth assignment in motion transparency stimuli composed of random dots moving in opposite directions. Similarly to other bistable percepts, which surface is seen i...

journal_title：Journal of vision

authors： Mamassian P,Wallace JM

更新日期：2010-11-01 00:00:00

abstract：:Archerfish are known for their remarkable behavior of shooting water jets at prey hanging on vegetation above water. Motivated by the fish's capacity to knock down small prey as high as two meters above water level, we studied the role of the retina in facilitating their excellent visual acuity. First, we show behavio...

journal_title：Journal of vision

authors： Ben-Simon A,Ben-Shahar O,Vasserman G,Ben-Tov M,Segev R

更新日期：2012-11-28 00:00:00

abstract：:We examined whether observers veridically perceive the reflectances of real objects under natural viewing conditions. A new forced-choice paradigm was used to measure observers' abilities to identify (not match) the reflectance of randomly crumpled gray papers across two levels of illumination, and also to simultaneou...

journal_title：Journal of vision

authors： Robilotto R,Zaidi Q

更新日期：2004-09-15 00:00:00

abstract：:Oscillatory synchronization of neuronal populations has been proposed to play a role in perceptual integration and attentional processing. However, some conflicting evidence has been found with respect to its causal relevance for sensory processing, particularly when using flickering visual stimuli with the aim of dri...

journal_title：Journal of vision

authors： Bauer M,Akam T,Joseph S,Freeman E,Driver J

更新日期：2012-04-13 00:00:00

abstract：:Changes to the visual environment can happen at many timescales, from very transient to semi-permanent. To adapt optimally, the visual system also adjusts at different timescales, with longer-lasting environmental changes producing longer-lasting effects, but how the visual system adapts in this way remains unknown. H...

journal_title：Journal of vision

authors： Bao M,Fast E,Mesik J,Engel S

更新日期：2013-08-26 00:00:00

abstract：:Covert spatial attention increases the perceived contrast of stimuli at attended locations, presumably via enhancement of visual neural responses. However, the relation between perceived contrast and the underlying neural responses has not been characterized. In this study, we systematically varied stimulus contrast, ...

journal_title：Journal of vision

authors： Cutrone EK,Heeger DJ,Carrasco M

更新日期：2014-12-30 00:00:00

abstract：:We measured neural responses to local and global aspects of form and motion stimuli using frequency-tagged, steady-state visual evoked potentials (SSVEPs) combined with magnetic resonance imaging (MRI) data. Random dot stimuli were used to portray either dynamic Glass patterns (Glass, 1969) or coherent motion displays...

journal_title：Journal of vision

authors： Palomares M,Ales JM,Wade AR,Cottereau BR,Norcia AM

更新日期：2012-09-26 00:00:00

abstract：:We investigate how the population nonlinearities resulting from lateral inhibition and thresholding in sparse coding networks influence neural response selectivity and robustness. We show that when compared to pointwise nonlinear models, such population nonlinearities improve the selectivity to a preferred stimulus an...

journal_title：Journal of vision

authors： Paiton DM,Frye CG,Lundquist SY,Bowen JD,Zarcone R,Olshausen BA

更新日期：2020-11-02 00:00:00

abstract：:Humans can detect multiple objects in briefly presented natural visual scenes, but the mechanisms through which the objects are segmented from the background and consciously accessed remain open. By asking participants to report how many humans natural photos presented for 50 ms contain, we show that up to three items...

journal_title：Journal of vision

authors： Railo H,Karhu VM,Mast J,Pesonen H,Koivisto M

更新日期：2016-01-01 00:00:00

abstract：:Two questions were posed in the present study: (1) Do infants search for discrepant items in the absence of instructions? We outline where previous research has been inconclusive in answering this question. (2) In what manner do infants search, and what are the fixation and saccade characteristics in saccadic search? ...

journal_title：Journal of vision

authors： Hessels RS,Hooge IT,Kemner C

更新日期：2016-06-01 00:00:00

abstract：:The essentially active nature of vision has long been acknowledged but has been difficult to investigate because of limitations in the available instrumentation, both for measuring eye and body movements and for presenting realistic stimuli in the context of active behavior. These limitations have been substantially r...

journal_title：Journal of vision

authors： Hayhoe MM

更新日期：2018-04-01 00:00:00

abstract：:Frequent target stimuli are detected more rapidly than infrequent ones. Here, we examined whether the frequency effect reflected durable attentional biases toward frequent target features, and whether the effect was confined to featural properties that defined the target. Participants searched for two specific target ...

journal_title：Journal of vision

authors： Sha LZ,Remington RW,Jiang YV

更新日期：2017-01-01 00:00:00

abstract：:The perception of a bistable stimulus as one or the other interpretation can be biased by prior presentations of that stimulus. Such learning effects have been found to be long lasting even after small amounts of training. The effectiveness of training may be influenced by preexposure to the ambiguous stimulus. Here w...

journal_title：Journal of vision

authors： van Dam LC,Ernst MO

更新日期：2010-07-01 00:00:00