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Frontiers in Integrative Neuroscience

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https://www.readbyqxmd.com/read/28381993/event-related-potentials-index-rapid-recalibration-to-audiovisual-temporal-asynchrony
#1
David M Simon, Jean-Paul Noel, Mark T Wallace
Asynchronous arrival of multisensory information at the periphery is a ubiquitous property of signals in the natural environment due to differences in the propagation time of light and sound. Rapid adaptation to these asynchronies is crucial for the appropriate integration of these multisensory signals, which in turn is a fundamental neurobiological process in creating a coherent perceptual representation of our dynamic world. Indeed, multisensory temporal recalibration has been shown to occur at the single trial level, yet the mechanistic basis of this rapid adaptation is unknown...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28360845/surround-masking-affects-visual-estimation-ability
#2
Nicola R Jastrzebski, Laila E Hugrass, Sheila G Crewther, David P Crewther
Visual estimation of numerosity involves the discrimination of magnitude between two distributions or perceptual sets that vary in number of elements. How performance on such estimation depends on peripheral sensory stimulation is unclear, even in typically developing adults. Here, we varied the central and surround contrast of stimuli that comprised a visual estimation task in order to determine whether mechanisms involved with the removal of unessential visual input functionally contributes toward number acuity...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28326023/infrared-video-pupillography-coupled-with-smart-phone-led-for-measurement-of-pupillary-light-reflex
#3
Lily Yu-Li Chang, Jason Turuwhenua, Tian Yuan Qu, Joanna M Black, Monica L Acosta
Clinical assessment of pupil appearance and pupillary light reflex (PLR) may inform us the integrity of the autonomic nervous system (ANS). Current clinical pupil assessment is limited to qualitative examination, and relies on clinical judgment. Infrared (IR) video pupillography combined with image processing software offer the possibility of recording quantitative parameters. In this study we describe an IR video pupillography set-up intended for human and animal testing. As part of the validation, resting pupil diameter was measured in human subjects using the NeurOptics(™) (Irvine, CA, USA) pupillometer, to compare against that measured by our IR video pupillography set-up, and PLR was assessed in guinea pigs...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28293183/editorial-a-matter-of-bottom-up-or-top-down-processes-the-role-of-attention-in-multisensory-integration
#4
EDITORIAL
Jess Hartcher-O'Brien, Salvador Soto-Faraco, Ruth Adam
No abstract text is available yet for this article.
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28293182/visual-field-map-clusters-in-high-order-visual-processing-organization-of-v3a-v3b-and-a-new-cloverleaf-cluster-in-the-posterior-superior-temporal-sulcus
#5
Brian Barton, Alyssa A Brewer
The cortical hierarchy of the human visual system has been shown to be organized around retinal spatial coordinates throughout much of low- and mid-level visual processing. These regions contain visual field maps (VFMs) that each follows the organization of the retina, with neighboring aspects of the visual field processed in neighboring cortical locations. On a larger, macrostructural scale, groups of such sensory cortical field maps (CFMs) in both the visual and auditory systems are organized into roughly circular cloverleaf clusters...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28270753/assessing-relevance-of-external-cognitive-measures
#6
REVIEW
Osvaldo Cairó
The arrival of modern brain imaging technologies has provided new opportunities for examining the biological essence of human intelligence as well as the relationship between brain size and cognition. Thanks to these advances, we can now state that the relationship between brain size and intelligence has never been well understood. This view is supported by findings showing that cognition is correlated more with brain tissues than sheer brain size. The complexity of cellular and molecular organization of neural connections actually determines the computational capacity of the brain...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28232792/characterization-of-involuntary-contractions-after-spinal-cord-injury-reveals-associations-between-physiological-and-self-reported-measures-of-spasticity
#7
Meagan Mayo, Bradley A DeForest, Mabelin Castellanos, Christine K Thomas
Correlations between physiological, clinical and self-reported assessments of spasticity are often weak. Our aims were to quantify functional, self-reported and physiological indices of spasticity in individuals with thoracic spinal cord injury (SCI; 3 women, 9 men; 19-52 years), and to compare the strength and direction of associations between these measures. The functional measure we introduced involved recording involuntary electromyographic activity during a transfer from wheelchair to bed which is a daily task necessary for function...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28163675/visual-distractors-disrupt-audiovisual-integration-regardless-of-stimulus-complexity
#8
Kyla D Gibney, Enimielen Aligbe, Brady A Eggleston, Sarah R Nunes, Willa G Kerkhoff, Cassandra L Dean, Leslie D Kwakye
The intricate relationship between multisensory integration and attention has been extensively researched in the multisensory field; however, the necessity of attention for the binding of multisensory stimuli remains contested. In the current study, we investigated whether diverting attention from well-known multisensory tasks would disrupt integration and whether the complexity of the stimulus and task modulated this interaction. A secondary objective of this study was to investigate individual differences in the interaction of attention and multisensory integration...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28154529/grouping-and-segregation-of-sensory-events-by-actions-in-temporal-audio-visual-recalibration
#9
Nara Ikumi, Salvador Soto-Faraco
Perception in multi-sensory environments involves both grouping and segregation of events across sensory modalities. Temporal coincidence between events is considered a strong cue to resolve multisensory perception. However, differences in physical transmission and neural processing times amongst modalities complicate this picture. This is illustrated by cross-modal recalibration, whereby adaptation to audio-visual asynchrony produces shifts in perceived simultaneity. Here, we examined whether voluntary actions might serve as a temporal anchor to cross-modal recalibration in time...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28127279/information-accumulation-over-time-in-monkey-inferior-temporal-cortex-neurons-explains-pattern-recognition-reaction-time-under-visual-noise
#10
Ryosuke Kuboki, Yasuko Sugase-Miyamoto, Narihisa Matsumoto, Barry J Richmond, Munetaka Shidara
We recognize objects even when they are partially degraded by visual noise. We studied the relation between the amount of visual noise (5, 10, 15, 20, or 25%) degrading 8 black-and-white stimuli and stimulus identification in 2 monkeys performing a sequential delayed match-to-sample task. We measured the accuracy and speed with which matching stimuli were identified. The performance decreased slightly (errors increased) as the amount of visual noise increased for both monkeys. The performance remained above 80% correct, even with 25% noise...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28018189/auditory-somatosensory-temporal-sensitivity-improves-when-the-somatosensory-event-is-caused-by-voluntary-body-movement
#11
Norimichi Kitagawa, Masaharu Kato, Makio Kashino
When we actively interact with the environment, it is crucial that we perceive a precise temporal relationship between our own actions and sensory effects to guide our body movements. Thus, we hypothesized that voluntary movements improve perceptual sensitivity to the temporal disparity between auditory and movement-related somatosensory events compared to when they are delivered passively to sensory receptors. In the voluntary condition, participants voluntarily tapped a button, and a noise burst was presented at various onset asynchronies relative to the button press...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27965548/methodological-problems-on-the-way-to-integrative-human-neuroscience
#12
REVIEW
Boris Kotchoubey, Felix Tretter, Hans A Braun, Thomas Buchheim, Andreas Draguhn, Thomas Fuchs, Felix Hasler, Heiner Hastedt, Thilo Hinterberger, Georg Northoff, Ingo Rentschler, Stephan Schleim, Stephan Sellmaier, Ludger Tebartz Van Elst, Wolfgang Tschacher
Neuroscience is a multidisciplinary effort to understand the structures and functions of the brain and brain-mind relations. This effort results in an increasing amount of data, generated by sophisticated technologies. However, these data enhance our descriptive knowledge, rather than improve our understanding of brain functions. This is caused by methodological gaps both within and between subdisciplines constituting neuroscience, and the atomistic approach that limits the study of macro- and mesoscopic issues...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27920672/editorial-beyond-space-based-or-feature-based-selection-mechanisms-of-object-based-attention
#13
EDITORIAL
Vivian M Ciaramitaro, Gene R Stoner
No abstract text is available yet for this article.
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27920671/proceedings-of-the-fourth-annual-deep-brain-stimulation-think-tank-a-review-of-emerging-issues-and-technologies
#14
Wissam Deeb, James J Giordano, Peter J Rossi, Alon Y Mogilner, Aysegul Gunduz, Jack W Judy, Bryan T Klassen, Christopher R Butson, Craig Van Horne, Damiaan Deny, Darin D Dougherty, David Rowell, Greg A Gerhardt, Gwenn S Smith, Francisco A Ponce, Harrison C Walker, Helen M Bronte-Stewart, Helen S Mayberg, Howard J Chizeck, Jean-Philippe Langevin, Jens Volkmann, Jill L Ostrem, Jonathan B Shute, Joohi Jimenez-Shahed, Kelly D Foote, Aparna Wagle Shukla, Marvin A Rossi, Michael Oh, Michael Pourfar, Paul B Rosenberg, Peter A Silburn, Coralie de Hemptine, Philip A Starr, Timothy Denison, Umer Akbar, Warren M Grill, Michael S Okun
This paper provides an overview of current progress in the technological advances and the use of deep brain stimulation (DBS) to treat neurological and neuropsychiatric disorders, as presented by participants of the Fourth Annual DBS Think Tank, which was convened in March 2016 in conjunction with the Center for Movement Disorders and Neurorestoration at the University of Florida, Gainesveille FL, USA. The Think Tank discussions first focused on policy and advocacy in DBS research and clinical practice, formation of registries, and issues involving the use of DBS in the treatment of Tourette Syndrome...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27920670/two-visual-pathways-in-primates-based-on-sampling-of-space-exploitation-and-exploration-of-visual-information
#15
Bhavin R Sheth, Ryan Young
Evidence is strong that the visual pathway is segregated into two distinct streams-ventral and dorsal. Two proposals theorize that the pathways are segregated in function: The ventral stream processes information about object identity, whereas the dorsal stream, according to one model, processes information about either object location, and according to another, is responsible in executing movements under visual control. The models are influential; however recent experimental evidence challenges them, e.g., the ventral stream is not solely responsible for object recognition; conversely, its function is not strictly limited to object vision; the dorsal stream is not responsible by itself for spatial vision or visuomotor control; conversely, its function extends beyond vision or visuomotor control...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27917113/commentary-contribution-of-interoceptive-information-to-emotional-processing-evidence-from-individuals-with-spinal-cord-injury
#16
COMMENT
Giuliana Lucci, Patrizia Sablone, Erika Nista
No abstract text is available yet for this article.
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27881955/response-commentary-perceptual-learning-in-autism-over-specificity-and-possible-remedies
#17
COMMENT
Hila Harris, David Israeli, Nancy J Minshew, Yoram S Bonneh, David J Heeger, Marlene Behrmann, Dov Sagi
No abstract text is available yet for this article.
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27833537/forward-prediction-in-the-posterior-parietal-cortex-and-dynamic-brain-machine-interface
#18
He Cui
While remarkable progress has been made in brain-machine interfaces (BMIs) over the past two decades, it is still difficult to utilize neural signals to drive artificial actuators to produce predictive movements in response to dynamic stimuli. In contrast to naturalistic limb movements largely based on forward planning, brain-controlled neuroprosthetics mainly rely on feedback without prior trajectory formation. As an important sensorimotor interface integrating multisensory inputs and efference copy, the posterior parietal cortex (PPC) might play a proactive role in predictive motor control...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27833536/patterns-of-activity-in-the-human-frontal-and-parietal-cortex-differentiate-large-and-small-saccades
#19
Marie-Hélène Grosbras
A vast literature indicates that small and large saccades, respectively, subserve different perceptual and cognitive strategies and may rely on different programming modes. While it is well-established that in monkeys' main oculomotor brain regions small and large eye movements are controlled by segregated neuronal populations, the representation of saccade amplitude in the human brain remains unclear. To address this question we used functional magnetic resonance imaging to scan participants while they performed saccades toward targets at either short (4°) or large (30°) eccentricity...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27812325/benefits-from-vergence-rehabilitation-evidence-for-improvement-of-reading-saccades-and-fixations
#20
François Daniel, Aurélien Morize, Dominique Brémond-Gignac, Zoï Kapoula
We hypothesize that binocular coordination of saccades is based on continuous neuroplasticity involving interactions of saccades and vergence. To test this hypothesis we study reading saccades in young students who were diagnosed for vergence disorders before and after vergence rehabilitation. Following orthoptic evaluation and symptomatology screening, 5 weekly sessions of vergence rehabilitation were applied with the REMOBI vergence double step protocole (see Kapoula et al., 2016). Using the Eyeseecam videoculography device we measured vergence as well as saccades and fixations during a reading test four times: at the beginning and at the end of the first and of the fifth vergence rehabilitation session...
2016: Frontiers in Integrative Neuroscience
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