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rapid serial visual presentation

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https://www.readbyqxmd.com/read/28809703/motion-based-rapid-serial-visual-presentation-for-gaze-independent-brain-computer-interfaces
#1
Dong-Ok Won, Han-Jeong Hwang, Dong-Min Kim, Klaus-Robert Muller, Seong-Whan Lee
Most event-related potential (ERP)-based braincomputer interface (BCI) spellers primarily use matrix layouts, and generally require moderate eye movement for successful operation. The fundamental objective of this study is to enhance the perceptibility of target characters by introducing motion stimuli to classical rapid serial visual presentation (RSVP) spellers that do not require any eye movement, thereby applying them to paralyzed patients with oculomotor dysfunctions. To test the feasibility of the proposed motion-based RSVP paradigm, we implemented three RSVP spellers: i) fixed-direction motion (FM-RSVP), ii) random-direction motion (RM-RSVP), and iii) (the conventional) non-motion stimulation (NM-RSVP), and evaluated the effect of the three different stimulation methods on spelling performance...
August 11, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28808655/multirapid-serial-visual-presentation-framework-for-eeg-based-target-detection
#2
Zhimin Lin, Ying Zeng, Hui Gao, Li Tong, Chi Zhang, Xiaojuan Wang, Qunjian Wu, Bin Yan
Target image detection based on a rapid serial visual presentation (RSVP) paradigm is a typical brain-computer interface system with various applications, such as image retrieval. In an RSVP paradigm, a P300 component is detected to determine target images. This strategy requires high-precision single-trial P300 detection methods. However, the performance of single-trial detection methods is relatively lower than that of multitrial P300 detection methods. Image retrieval based on multitrial P300 is a new research direction...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28797898/lateralization-of-spatial-rather-than-temporal-attention-underlies-the-left-hemifield-advantage-in-rapid-serial-visual-presentation
#3
Dariusz Asanowicz, Lena Kruse, Kamila Śmigasiewicz, Rolf Verleger
In bilateral rapid serial visual presentation (RSVP), the second of two targets, T1 and T2, is better identified in the left visual field (LVF) than in the right visual field (RVF). This LVF advantage may reflect hemispheric asymmetry in temporal attention or/and in spatial orienting of attention. Participants performed two tasks: the "standard" bilateral RSVP task (Exp.1) and its unilateral variant (Exp.1 & 2). In the bilateral task, spatial location was uncertain, thus target identification involved stimulus-driven spatial orienting...
August 7, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28792451/a-novel-computer-oculomotor-rehabilitation-cor-program-for-mild-traumatic-brain-injury-mtbi
#4
Kenneth J Ciuffreda, Naveen K Yadav, Preethi Thiagarajan, Diana P Ludlam
Individuals with traumatic brain injury (TBI) manifest a wide range of visual dysfunctions. One of the most prevalent involves the oculomotor system, which includes version, vergence, and accommodation. However, until recently, there has been no comprehensive, computer-based program for remediation of these oculomotor deficits. We present such an oculomotor rehabilitation program that has been tested in a clinical trial in patients having TBI with a high degree of success based on before-and-after objective system recordings, performance measures, and related visual symptomotology...
August 9, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28777057/what-you-see-is-what-you-remember-visual-chunking-by-temporal-integration-enhances-working-memory
#5
Elkan G Akyürek, Nils Kappelmann, Marc Volkert, Hedderik van Rijn
Human memory benefits from information clustering, which can be accomplished by chunking. Chunking typically relies on expertise and strategy, and it is unknown whether perceptual clustering over time, through temporal integration, can also enhance working memory. The current study examined the attentional and working memory costs of temporal integration of successive target stimulus pairs embedded in rapid serial visual presentation. ERPs were measured as a function of behavioral reports: One target, two separate targets, or two targets reported as a single integrated target...
August 4, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28718881/identification-of-bodies-by-unique-serial-numbers-on-implanted-medical-devices
#6
Melissa M Blessing, Peter T Lin
Visual identification is the most common identification method used by medical examiners but is not always possible. Alternative methods include X-ray, fingerprint, or DNA comparison, but these methods require additional resources. Comparison of serial numbers on implanted medical devices is a rapid and definitive method of identification. To assess the practicality of using this method, we reviewed 608 consecutive forensic autopsies performed at a regional medical examiner office. Of these, 56 cases required an alternative method of identification due to decomposition (n = 35), gunshot wound (n = 9), blunt trauma (n = 6), or charring (n = 6)...
July 18, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28709924/training-peripheral-vision-to-read-boosting-the-speed-of-letter-processing
#7
Deyue Yu, Gordon E Legge, Gunther Wagoner, Susana T L Chung
Central-field loss necessitates the use of peripheral vision which makes reading slow and difficult. Slower temporal processing of letter recognition has been shown to be a limiting factor in peripheral letter recognition and reading. Previous studies showed that perceptual learning can increase the number of letters recognized on each fixation and is accompanied by an increase in reading speed. We hypothesized that improvement in temporal processing speed underlies the observed training effects. Here, we proposed an adaptive training procedure to focus on boosting the speed of letter recognition, and investigated whether peripheral reading would be enhanced by this training method...
July 19, 2017: Vision Research
https://www.readbyqxmd.com/read/28695295/prioritized-identification-of-attractive-and-romantic-partner-faces-in-rapid-serial-visual-presentation
#8
Koyo Nakamura, Shihoko Arai, Hideaki Kawabata
People are sensitive to facial attractiveness because it is an important biological and social signal. As such, our perceptual and attentional system seems biased toward attractive faces. We tested whether attractive faces capture attention and enhance memory access in an involuntary manner using a dual-task rapid serial visual presentation (dtRSVP) paradigm, wherein multiple faces were successively presented for 120 ms. In Experiment 1, participants (N = 26) were required to identify two female faces embedded in a stream of animal faces as distractors...
July 10, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28676734/fuzzy-decision-making-fuser-fdmf-for-integrating-human-machine-autonomous-hma-systems-with-adaptive-evidence-sources
#9
Yu-Ting Liu, Nikhil R Pal, Amar R Marathe, Yu-Kai Wang, Chin-Teng Lin
A brain-computer interface (BCI) creates a direct communication pathway between the human brain and an external device or system. In contrast to patient-oriented BCIs, which are intended to restore inoperative or malfunctioning aspects of the nervous system, a growing number of BCI studies focus on designing auxiliary systems that are intended for everyday use. The goal of building these BCIs is to provide capabilities that augment existing intact physical and mental capabilities. However, a key challenge to BCI research is human variability; factors such as fatigue, inattention, and stress vary both across different individuals and for the same individual over time...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28656503/electrophysiological-and-behavioral-evidence-reveals-the-effects-of-trait-anxiety-on-contingent-attentional-capture
#10
Yi-Chun Tsai, Hsin-Jie Lu, Chi-Fu Chang, Wei-Kuang Liang, Neil G Muggleton, Chi-Hung Juan
Few studies have investigated the effects of anxiety on contingent attentional capture. The present study examined contingent attentional capture in trait anxiety by applying a rapid serial visual presentation (RSVP) paradigm during electroencephalographic recording. Overall, the behavioral and electrophysiological results showed a larger capture effect when a distractor was the same color as the target compared to when the distractor was not of the target color. Moreover, high-anxiety individuals showed a larger N2pc in the target colored distractor condition and nontarget colored distractor condition compared to the distractor-absent condition...
June 27, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28643206/right-visual-field-advantage-in-the-attentional-blink-asymmetry-in-attentional-gating-across-time-and-space
#11
Dafna Bergerbest, Orit Shilkrot, Michal Joseph, Moti Salti
When two targets are presented in a rapid serial visual presentation (RSVP), recognition of the second target (T2) is usually reduced when presented 150-500 ms after the first target, demonstrating an attentional blink (AB). Previous studies have shown a left visual-field (LVF) advantage in T2 recognition, when T2 was embedded in one of two streams, demanding top-down attention for its recognition. Here, we explored the impact of bottom-up saliency on spatial asymmetry in the AB. When T2 was spatially shifted outside from the RSVP, creating an abrupt onset of T2, right T2s showed a right visual-field (RVF) advantage...
June 22, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28604795/individual-differences-in-dual-target-rsvp-task-performance-relate-to-entrainment-but-not-to-individual-alpha-frequency
#12
Cornelia Kranczioch
The attentional blink (AB) paradigm is widely used to study visual temporal attention. An important feature of the standard AB paradigm is repetitive visual stimulation, more precisely the rapid serial visual presentation (RSVP) of numerous distracters interspersed with two targets. The RSVP stream is likely to result in entrainment of visual cortex, which has been suggested to negatively affect target identification in the AB paradigm. The present EEG study tested this idea with an inter-individual differences approach...
2017: PloS One
https://www.readbyqxmd.com/read/28584952/identity-and-semantic-negative-priming-in-rapid-serial-visual-presentation-streams
#13
Lin Li, Ewald Neumann, Zhe Chen
In selective attention tasks, the efficiency of processing concurrently presented target and distractor stimuli in a given display is often influenced by the relationship these stimuli have with those in the previous display. When a to-be-attended target on a current trial (the probe trial) matches the ignored, non-target distractor on a previous trial (the prime trial), a response to the target is typically delayed compared with when the two stimuli are not associated. This negative priming (NP) phenomenon has been observed in numerous studies with traditional NP tasks presenting the target and distractor simultaneously in both the prime and probe trial couplets...
June 5, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28562664/towards-the-automated-localisation-of-targets-in-rapid-image-sifting-by-collaborative-brain-computer-interfaces
#14
Ana Matran-Fernandez, Riccardo Poli
The N2pc is a lateralised Event-Related Potential (ERP) that signals a shift of attention towards the location of a potential object of interest. We propose a single-trial target-localisation collaborative Brain-Computer Interface (cBCI) that exploits this ERP to automatically approximate the horizontal position of targets in aerial images. Images were presented by means of the rapid serial visual presentation technique at rates of 5, 6 and 10 Hz. We created three different cBCIs and tested a participant selection method in which groups are formed according to the similarity of participants' performance...
2017: PloS One
https://www.readbyqxmd.com/read/28547680/the-influence-of-attention-on-value-integration
#15
Melina A Kunar, Derrick G Watson, Konstantinos Tsetsos, Nick Chater
People often have to make decisions based on many pieces of information. Previous work has found that people are able to integrate values presented in a rapid serial visual presentation (RSVP) stream to make informed judgements on the overall stream value (Tsetsos et al. Proceedings of the National Academy of Sciences of the United States of America, 109(24), 9659-9664, 2012). It is also well known that attentional mechanisms influence how people process information. However, it is unknown how attentional factors impact value judgements of integrated material...
August 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28527003/the-effects-of-kanizsa-contours-on-temporal-integration-and-attention-in-rapid-serial-visual-presentation
#16
Aytaç Karabay, Elkan G Akyürek
Performance in rapid serial visual presentation tasks has been shown to depend on the temporal integration of target stimuli when they are presented in direct succession. Temporal target integration produces a single, combined representation of visually compatible stimuli, which is comparatively easy to identify. It is currently unknown to what extent target compatibility affects this perceptual behavior, because it has not been studied systematically to date. In the present study, the effects of compatibility on temporal integration and attention were investigated by manipulating the Gestalt properties of target features...
August 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28502226/stronger-interference-from-distractors-in-the-right-hemifield-during-visual-search
#17
Christophe Carlei, Dirk Kerzel
The orientation-bias hypothesis states that there is a bias to attend to the right visual hemifield (RVF) when there is spatial competition between stimuli in the left and right hemifield [Pollmann, S. (1996). A pop-out induced extinction-like phenomenon in neurologically intact subjects. Neuropsychologia, 34(5), 413-425. doi: 10.1016/0028-3932(95)00125-5 ]. In support of this hypothesis, stronger interference was reported for RVF distractors with contralateral targets. In contrast, previous studies using rapid serial visual presentation (RSVP) found stronger interference from distractors in the left visual hemifield (LVF)...
May 13, 2017: Laterality
https://www.readbyqxmd.com/read/28484948/enhanced-recognition-of-memorable-pictures-in-ultra-fast-rsvp
#18
Nico Broers, Mary C Potter, Mark R Nieuwenstein
Long-term recognition memory for some pictures is consistently better than for others (Isola, Xiao, Parikh, Torralba, & Oliva, IEEE Transaction on Pattern Analysis and Machine Intelligence (PAMI), 36(7), 1469-1482, 2014). Here, we investigated whether pictures found to be memorable in a long-term memory test are also perceived more easily when presented in ultra-rapid RSVP. Participants viewed 6 pictures they had never seen before that were presented for 13 to 360 ms per picture in a rapid serial visual presentation (RSVP) sequence...
May 8, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28481768/orbital-perivenous-abscess-complicating-the-diagnosis-and-management-of-orbital-cellulitis
#19
Rohan Verma, Bradford W Lee, Ramzi M Alameddine, Audrey C Ko, Paritosh C Khanna, Don O Kikkawa, Bobby S Korn
An 11-year-old female presented with orbital cellulitis, bacterial sinusitis, enlarged left superior ophthalmic vein, dural venous sinuses, and internal jugular vein. The patient underwent endoscopic sinus surgery and was started on intravenous antibiotics and anticoagulation with limited improvement in orbital signs and symptoms. A magnetic resonance imaging/magnetic resonance venography of the orbits and brain revealed a dilated left superior ophthalmic vein with absence of flow but no clearly discernible orbital abscess...
May 5, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28456522/how-handedness-influences-perceptual-and-attentional-processes-during-rapid-serial-visual-presentation
#20
Kamila Śmigasiewicz, Matthias Liebrand, Johannes Landmesser, Rolf Verleger
Stimulus-driven orienting of visual attention is lateralized to the right hemisphere (RH). This lateralization has been studied in the dual-stream rapid serial visual presentation task (dual RSVP). In this task a second target (T2), hard to discern by being embedded in one of two lateral streams of rapidly changing distractors, is better identified on the left than on the right. This phenomenon is called the left visual field advantage (LVFA). Furthermore, in terms of event related potentials (ERPs), the N2pc component and visual evoked potentials (VEPs) are evoked earlier at the RH than at the left hemisphere (LH)...
April 26, 2017: Neuropsychologia
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