http://www.bibsonomy.org/burst/user/perceptron/AuditoryBibSonomy BuRST Feed for /user/perceptron/Auditory2008-09-07T19:55:27+02:00http://www.bibsonomy.org/bibtex/22678a4f9bbcf8d1dc72ec52b3a7aac58/perceptronperceptron2007-12-16T20:00:22+01:00Nerve Research Brain Reading; Perception Speech; Oxygen; Female; Adult; Laterality; Gov't; Ocular; Fixation, Perception; Magnetic Image Humans; Visual Computer-Assisted; Mapping; Non-U.S. Adolescent; Resonance Auditory Support, Processing, Imaging; Male; Net; <span style="color:#555555;">M. <a href="http://www.bibsonomy.org/author/Vigneau">Vigneau</a> und G. <a href="http://www.bibsonomy.org/author/Jobard">Jobard</a> und B. <a href="http://www.bibsonomy.org/author/Mazoyer">Mazoyer</a> und N. <a href="http://www.bibsonomy.org/author/Tzourio-Mazoyer">Tzourio-Mazoyer</a> </span><em>Neuroimage</em>(<em>2005</em>)Sun Dec 16 20:00:22 CET 2007Neuroimage694--705Word and non-word reading: what role for the Visual Word Form Area?272005Nerve Research Brain Reading; Perception Speech; Oxygen; Female; Adult; Laterality; Gov't; Ocular; Fixation, Perception; Magnetic Image Humans; Visual Computer-Assisted; Mapping; Non-U.S. Adolescent; Resonance Auditory Support, Processing, Imaging; Male; Net; The putative role of the so-called Visual Word Form Area (VWFA) during reading remains under debate. For some authors, this region is specifically involved in a pre-lexical processing of words and pseudowords, whereas such specificity is challenged by others given the VWFA involvement during both non-word reading and word listening. Here, we further investigated this issue, measuring BOLD variations and their lateralization with fMRI during word and non-word reading, in order to evaluate the lexicality effect, and during reading and listening of words, in order to evaluate the impact of stimulus delivery modality on word processing networks. Region of interest (ROI) analysis was first performed in three target areas: 1-VWFA as defined by a meta-analysis of the word reading literature, 2-a middle temporal area (T2) found co-activated by both word reading and listening, 3-an inferior occipital area (OI) belonging to the unimodal visual cortex of the inferior occipital gyrus. VWFA activity was found not different between word and non-word reading but was more leftward lateralized during word reading due to a reduction of activity in the VWFA right counterpart. A similar larger leftward lateralization during word reading was also uncovered in the T2 ROI but was related to a larger left side activity. Such a lexicality effect was not observed in the OI ROI. By contrast, BOLD increases during listening were restricted to the left VWFA and T2 ROIs. Voxel-based analysis (SPM99) showed that semantic areas were more active during word than non-word reading and co-activated by both reading and listening, exhibiting a left lateralized activity in all tasks. These results indicate that the left VWFA would be the place where visual and verbal representations bind under the control of left semantic areas.http://www.bibsonomy.org/bibtex/2e8aa5bab0a08a0e2499547974e24d201/perceptronperceptron2007-12-16T20:00:22+01:00Parietal Aged; Brain; Male; Mapping; Perception Visual Semantics; Agnosia; Brain Speech Auditory Adult; Perception; Humans; Occipital Tomography, Middle Lobe; Emission-Computed; <span style="color:#555555;">R. <a href="http://www.bibsonomy.org/author/Vandenberghe">Vandenberghe</a> und C. <a href="http://www.bibsonomy.org/author/Price">Price</a> und R. <a href="http://www.bibsonomy.org/author/Wise">Wise</a> und O. <a href="http://www.bibsonomy.org/author/Josephs">Josephs</a> und R. S. <a href="http://www.bibsonomy.org/author/Frackowiak">Frackowiak</a> </span><em>Nature</em>(<em>1996</em>)Sun Dec 16 20:00:22 CET 2007Nature254--256Functional anatomy of a common semantic system for words and pictures.3831996Parietal Aged; Brain; Male; Mapping; Perception Visual Semantics; Agnosia; Brain Speech Auditory Adult; Perception; Humans; Occipital Tomography, Middle Lobe; Emission-Computed; The relationship between the semantic processing of words and of pictures is a matter of debate among cognitive scientists. We studied the functional anatomy of such processing by using positron-emission tomography (PET). We contrasted activity during two semantic tasks (probing knowledge of associations between concepts, and knowledge of the visual attributes of these concepts) and a baseline task (discrimination of physical stimulus size), performed either with words or with pictures. Modality-specific activations unrelated to semantic processing occurred in the left inferior parietal lobule for words, and the right middle occipital gyrus for pictures. A semantic network common to both words and pictures extended from the left superior occipital gyrus through the middle and inferior temporal cortex to the inferior frontal gyrus. A picture-specific activation related to semantic tasks occurred in the left posterior inferior temporal sulcus, and word-specific activations related to semantic tasks were localized to the left superior temporal sulcus, left anterior middle temporal gyrus, and left inferior frontal sulcus. Thus semantic tasks activate a distributed semantic processing system shared by both words and pictures, with a few specific areas differentially active for either words or pictures.http://www.bibsonomy.org/bibtex/29e33894223e4720de235eddcda09743f/perceptronperceptron2007-12-16T20:00:22+01:00Aged; Cerebral Male; Pattern Recognition, Imaging; Visual Perception Humans; Support, Middle Adult; Resonance Female; Non-U.S. Perception; Gov't; Magnetic Research Cortex; Language; Auditory Visual; <span style="color:#555555;">Uri <a href="http://www.bibsonomy.org/author/Hasson">Hasson</a> und Ifat <a href="http://www.bibsonomy.org/author/Levy">Levy</a> und Marlene <a href="http://www.bibsonomy.org/author/Behrmann">Behrmann</a> und Talma <a href="http://www.bibsonomy.org/author/Hendler">Hendler</a> und Rafael <a href="http://www.bibsonomy.org/author/Malach">Malach</a> </span><em>Neuron</em>(<em>2002</em>)Sun Dec 16 20:00:22 CET 2007Neuron479--490Eccentricity bias as an organizing principle for human high-order object areas.342002Aged; Cerebral Male; Pattern Recognition, Imaging; Visual Perception Humans; Support, Middle Adult; Resonance Female; Non-U.S. Perception; Gov't; Magnetic Research Cortex; Language; Auditory Visual; We have recently proposed a center-periphery organization based on resolution needs, in which objects engaging in recognition processes requiring central-vision (e.g., face-related) are associated with center-biased representations, while objects requiring large-scale feature integration (e.g., buildings) are associated with periphery-biased representations. Here we tested this hypothesis by comparing the center-periphery organization with activations to five object categories: faces, buildings, tools, letter strings, and words. We found that faces, letter strings, and words were mapped preferentially within the center-biased representation. Faces showed a hemispheric lateralization opposite to that of letter strings and words. In contrast, buildings were mapped mainly to the periphery-biased representation, while tools activated both central and peripheral representations. The results are compatible with the notion that center-periphery organization allows the optimal allocation of cortical magnification to the specific requirements of various recognition processes.http://www.bibsonomy.org/bibtex/26ab4f852809efe09ea2e2c172ef18cd3/perceptronperceptron2007-12-16T20:00:22+01:00Humans; Processes; Names; Pathways; Gov't, Female; Magnetic U.S. Research Recognition, Imaging; Support, Resonance Mental Male; Pattern Cerebrovascular Adult; Circulation; Visual; Brain; Oxygen; Visual Classification; P.H.S.; Auditory Recall; Perception Comparative Perception; Gov't; Study; Non-U.S. <span style="color:#555555;">Reginald B <a href="http://www.bibsonomy.org/author/Adams">Adams</a> und Petr <a href="http://www.bibsonomy.org/author/Janata">Janata</a> </span><em>Neuroimage</em><em>16(2):361--377</em>(<em>2002</em>)Sun Dec 16 20:00:22 CET 2007Neuroimage2361--377A comparison of neural circuits underlying auditory and visual object categorization.162002Humans; Processes; Names; Pathways; Gov't, Female; Magnetic U.S. Research Recognition, Imaging; Support, Resonance Mental Male; Pattern Cerebrovascular Adult; Circulation; Visual; Brain; Oxygen; Visual Classification; P.H.S.; Auditory Recall; Perception Comparative Perception; Gov't; Study; Non-U.S. Knowledge about environmental objects derives from representations of multiple object features both within and across sensory modalities. While our understanding of the neural basis for visual object representation in the human and nonhuman primate brain is well advanced, a similar understanding of auditory objects is in its infancy. We used a name verification task and functional magnetic resonance imaging (fMRI) to characterize the neural circuits that are activated as human subjects match visually presented words with either simultaneously presented pictures or environmental sounds. The difficulty of the matching judgment was manipulated by varying the level of semantic detail at which the words and objects were compared. We found that blood oxygen level dependent (BOLD) signal was modulated in ventral and dorsal regions of the inferior frontal gyrus of both hemispheres during auditory and visual object categorization, potentially implicating these areas as sites for integrating polymodal object representations with concepts in semantic memory. As expected, BOLD signal increases in the fusiform gyrus varied with the semantic level of object categorization, though this effect was weak and restricted to the left hemisphere in the case of auditory objects.