Fmri visual object recognition
WebJan 1, 2024 · A single-case study is presented of a patient w ith a modality-specific problem in visual object recognition, w hich can be linked to impaired stored descriptions for … WebNov 1, 2003 · Abstract. D.F., a patient with severe visual form agnosia, has been the subject of extensive research during the past decade. The fact that she could process visual input accurately for the purposes of guiding action despite being unable to perform visual discriminations on the same visual input inspired a novel interpretation of the functions …
Fmri visual object recognition
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Four healthy subjects (two female, ages 30, 32, 32, and 34) from the University of Pennsylvania community participated in the experiment. All had normal or corrected-to-normal vision and provided written informed consent in compliance with procedures approved by Institutional Review Boards at the … See more Participants were scanned on a Siemens 3.0T Prisma scanner using a 64-channel head coil. We acquired T1-weighted structural images using an MPRAGE protocol (TR = 2200 … See more Subjects viewed images of individual objects presented on textured backgrounds. The objects were from 81 different categories, with 10 unique images per category, … See more fMRI data were processed and modeled using SPM12 (Wellcome Trust Centre for Neuroimaging, London, UK) and MATLAB (R2024b … See more We collected fMRI data while subjects viewed images of objects on textured backgrounds and performed a category-detection task … See more WebDec 4, 2024 · Magnetic Resonance Imaging (MRI) has given doctors the ability to obtain very good images of the brain's structures. A newer technique known as functional …
WebEvery human cognitive function, such as visual object recognition, is realized in a complex spatio-temporal activity pattern in the brain. ... Similarity-Based Fusion of MEG and fMRI … WebThe FFA was discovered and continues to be investigated in humans using positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) studies. Usually, a participant views images of faces, objects, places, bodies, scrambled faces, scrambled objects, scrambled places, and scrambled bodies. This is called a functional …
WebMay 28, 2010 · Weakly electric fish use active electrolocation for object detection and orientation in their environment even in complete darkness. The African mormyrid Gnathonemus petersii can detect object parameters, such as material, size, shape, and distance. Here, we tested whether individuals of this species can learn to identify 3 … WebSingle-cell recording studies in monkeys and fMRI studies in humans have shown that neural activity in area LIP is associated with tasks: compensate for the distortion caused due to cortical magnification A neuroprosthetic device that uses relatively fewer electrodes to stimulate the parts of V1 corresponding to the fovea aims to:
WebApr 7, 2024 · The clear group differences in the current behavioral and resting-state fMRI data reveal plastic changes in the neural substrates for voice recognition associated with early visual deprivation. Specifically, the internal links of the intact voice system were enhanced, while the connections between the core part of the voice system and the ...
WebI've programmed stimulus presentation scripts for visual attention experiments, performed preprocessing on EEG, MEG, and fMRI data, … modifying core beliefs worksheetWebMulti-voxel pattern analysis (MVPA) was first introduced as a simple linear classifier applied to visual object recognition (Haxby et al., 2001) and has grown to encompass a wide range of model-free approaches that determine whether the pattern of fMRI responses in a given region can be used to distinguish between different behavioral states or ... modifying core beliefsWebIn a related [fMRI-en] study, the activation of the LOC, which occurred regardless of the presented object's visual cues such as motion, texture, or luminance contrasts, … modifying credit card divorce