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Illusory figures demonstrate the visual system's ability to integrate separate parts into coherent, whole objects. The present study was performed to track the neuronal object construction process in human observers, by incrementally manipulating the grouping strength within a given configuration until the emergence of a whole-object representation. Two tasks were employed: First, in the spatial localization task, object completion could facilitate performance and was task-relevant, whereas it was irrelevant in the second, i.e., luminance discrimination task. Concurrent functional magnetic resonance imaging (fMRI) used spatial localizers to locate brain regions representing task-critical illusory-figure parts to investigate whether the step-wise object construction process would modulate neural activity in these localized brain regions. The results revealed that both V1 and the lateral occipital complex (LOC, with sub-regions LO1 and LO2) were involved in Kanizsa figure processing. However, completion-specific activations were found predominantly in LOC, where neural activity exhibited a modulation in accord with the configuration's grouping strength, whether or not the configuration was relevant to performing the task at hand. Moreover, right LOC activations were confined to LO2 and responded primarily to surface and shape completions, whereas left LOC exhibited activations in both LO1 and LO2 and was related to encoding shape structures with more detail. Together, these results demonstrate that various grouping properties within a visual scene are integrated automatically in LOC, with sub-regions located in different hemispheres specializing in the component sub-processes that render completed objects.
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The application of the tracking-learning-detection (TLD) framework; a performant tracking algorithm for real-life objects in CCD video, was evaluated and successfully optimized for tracking anatomical...
Object identification and enumeration rely on the ability to distinguish, or individuate, objects from the background. Does multiple object individuation operate only over bounded, separable objects o...
The ability to track multiple objects is important for daily life activities such as driving, but it is subject to some restrictions. One limitation concerns the hemifields in which objects move. A pr...
We introduce here a large tracking database that offers an unprecedentedly wide coverage of common moving objects in the wild, called GOT-10k. Specifically, GOT-10k is built upon the backbone of WordN...
In the attentional bias (AB) phenomenon, eating disorder (ED) patients show a tendency to pay more attention to self-attributed unattractive body parts than to other body parts. However, little resear...
In this study，researchers will use personalized objects to assess patients' level of consciousness in chronic patients in minimally conscious state (MCS).
This pilot study examines concurrent and predictive relationships between eye tracking and clinical outcomes during a 16-week behavioral intervention (PRT) for children with ASD. Eye track...
Posterior cortical atrophy (PCA) is manifested by neuro-visual disorders that alter the spatial location of objects, their manipulation and/or recognition. Its etiology is most often neuro...
This study will assess the effects of exercise and non-concussive bodily contact on eye-tracking scores collected by the EYE-SYNC eye-tracking device.
The purpose of this study is determine the involvement of motor system in the memory of manipulable objects. The idea is to stimulate the ventral premotor cortex with transcranial magnetic...
Individuals' personal concept of their bodies as objects in and bound by space, independently and apart from all other objects.
An enduring, learned predisposition to behave in a consistent way toward a given class of objects, or a persistent mental and/or neural state of readiness to react to a certain class of objects, not as they are but as they are conceived to be.
The joining of objects by means of a cement (e.g., in fracture fixation, such as in hip arthroplasty for joining of the acetabular component to the femoral component). In dentistry, it is used for the process of attaching parts of a tooth or restorative material to a natural tooth or for the attaching of orthodontic bands to teeth by means of an adhesive.
Spectroscopy technique which measures changes in organic compounds by tracking the spectral energy of absorption of HYDROGEN atoms.
The sequential activation of serum COMPLEMENT PROTEINS to create the COMPLEMENT MEMBRANE ATTACK COMPLEX. Factors initiating complement activation include ANTIGEN-ANTIBODY COMPLEXES, microbial ANTIGENS, or cell surface POLYSACCHARIDES.