Auditory and Visual Motion Processing and Integration in the Primate Cerebral Cortex

Chaplin, Tristan A.; Rosa, Marcello G. P.; Lui, Leo

doi:10.3389/fncir.2018.00093

Cited by 22 publications

(16 citation statements)

References 160 publications

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“…In literature, physiological evidence from single neuron studies of the primate cerebral cortex has suggested that the integration of visual and auditory motion cues may not be mediated by the early visual areas MT and MST and thus the integration likely occurs in higher-level cortical areas (Chaplin et al, 2018). Our finding that both primary and association visual and auditory inputs converge in L1 of the Pro suggests that the Pro is a region for the integration.…”

Section: Convergent Projections To Layer 1 Of the Promentioning

confidence: 55%

“…To our knowledge, this type of convergence was not reported previously. As recently discussed, L1 is an important hub for selectively integrating cortico-cortical and thalamocortical afferents (Chaplin et al, 2018). In L1, the excitation of apical dendrites of deep layer neurons by feedback projections as a way to amplify excitatory inputs to proximal dendrites may be a general mechanism used in cerebral cortex (Phillips, 2017).…”

Section: Convergent Projections To Layer 1 Of the Promentioning

confidence: 99%

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Afferent Projections to Area Prostriata of the Mouse

Chen

et al. 2020

Front. Neuroanat.

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Area prostriata plays important roles in fast detection and analysis of peripheral visual information. It remains unclear whether the prostriata directly receives and integrates information from other modalities. To gain insight into this issue, we investigated brain-wide afferent projections to mouse prostriata. We find convergent projections to layer 1 of the prostriata from primary and association visual and auditory cortices; retrosplenial, lateral entorhinal, and anterior cingulate cortices; subiculum; presubiculum; and anterior thalamic nuclei. Innervation of layers 2–3 of the prostriata mainly originates from the presubiculum (including postsubiculum) and anterior midline thalamic region. Layer 5 of the prostriata mainly receives its inputs from medial entorhinal, granular retrosplenial, and medial orbitofrontal cortices and anteromedial thalamic nucleus while layer 6 gets its major inputs from ectorhinal, postrhinal, and agranular retrosplenial cortices. The claustrum, locus coeruleus, and basal forebrain provide relatively diffuse innervation to the prostriata. Moreover, Cre-dependent tracing in cortical areas reveals that the cells of origin of the prostriata inputs are located in layers 2–4 and 5 of the neocortical areas, layers 2 and 5 of the medial entorhinal cortex, and layer 5 of the retrosplenial cortex. These results indicate that the prostriata is a unique region where primary and association visual and auditory inputs directly integrate with many limbic inputs.

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Section: Convergent Projections To Layer 1 Of the Promentioning

confidence: 55%

Section: Convergent Projections To Layer 1 Of the Promentioning

confidence: 99%

Afferent Projections to Area Prostriata of the Mouse

Chen

et al. 2020

Front. Neuroanat.

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“…The activations over this region have been proposed to subserve the comparison of sensory signals and to play an important role in perceptual tasks during which the comparison of the remembered and current stimuli has to be performed. Furthermore, subdivisions of this area (e.g., Brodmann area 8) are known to receive inputs from both motion pathway and auditory cortex (Romanski, 2007) and the PFC has been proposed to play a role in audiovisual motion integration recently (Chaplin et al, 2018).…”

Section: Temporal Disparity Level and (Right) Frontal Scalp Sitesmentioning

confidence: 99%

Cortical processes underlying the effects of static sound timing on perceived visual speed

Kaya

Kafaligonul

2019

NeuroImage

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It is well known that the timing of brief static sounds can alter different aspects of visual motion perception. For instance, previous studies have shown that time intervals demarcated by brief sounds can modulate perceived visual speed such that apparent motions with short auditory time intervals are typically perceived as faster than those with long time intervals. Yet, little is known about the principles and cortical processes underlying such effects of auditory timing. Using a speed judgment paradigm combined with EEG recording, we aimed to identify when and where in the cortex auditory timing takes place for motion processing. Our results indicated significant effects of auditory timing over the medial parieto-occipital and parietal, right centro-parietal, and frontal scalp sites. In addition, these effects were not restricted to a single ERP component and we observed both significant changes in early and late components. Therefore, our findings here suggest that auditory timing may take place at both early and late stages of motion processing and its influences on motion perception may be the outcome of the dynamic interplay between different cortical regions. Together with accumulating evidence, these findings also support the notion that audiovisual integration is a multistage process and it may be achieved through more diversified processes than previously thought.

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“…The analysis mechanism of motion direction in visual cortex differs from that of static contrast stimuli. Different neurons in the visual cortex can be activated by different directions of stimuli; this phenomenon is referred to as direction selectivity ( Tzvetanov, 2012 ; Chaplin et al, 2018 ). However, only a small number of neurons in the V1 area exhibit direction selectivity, although visual information from both eyes is transmitted to V1 at the first stage in primates ( Davies et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Decline of Orientation and Direction Sensitivity in the Aging Population

et al. 2021

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While the aging population is growing, our knowledge regarding age-related deterioration of visual perception remains limited. In the present study, we investigated the effects of aging on orientation and direction sensitivity in a healthy population using a weighted up–down adaptive method to improve the efficiency and reliability of the task. A total of 57 healthy participants aged 22–72 years were included and divided into old and young groups. Raw experimental data were processed using a psychometric method to determine the differences between the two groups. In the orientation task, the threshold of the discrimination angle and bias (i.e., the difference between the perceived midpoint from the logistic function and the reference point) was increased, while the lapsing rate (i.e., 1—the maximum logistic function) did not significantly change in the old group compared with the young group. In the motion direction task, the threshold, bias, and lapsing rate were significantly increased in the old group compared with the young group. These results suggest that the decreased ability of old participants in discrimination of stimulus orientation and motion direction could be related to the impaired function of visual cortex.

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Auditory and Visual Motion Processing and Integration in the Primate Cerebral Cortex

Cited by 22 publications

References 160 publications

Afferent Projections to Area Prostriata of the Mouse

Afferent Projections to Area Prostriata of the Mouse

Cortical processes underlying the effects of static sound timing on perceived visual speed

Decline of Orientation and Direction Sensitivity in the Aging Population

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