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description Publicationkeyboard_double_arrow_right Article 2016Ovid Technologies (Wolters Kluwer Health) NIH | Phase 2 Study of Mexileti..., NIH | Novel Molecular Mechanism..., CIHR +24 projectsNIH| Phase 2 Study of Mexiletine for the Treatment of Myotonic Dystrophy ,NIH| Novel Molecular Mechanisms of Neuromuscular Disease: Implications for Therapy ,CIHR ,NIH| BIOEQUIVALENCE AND CLINICAL IMPLICATIONS OF GENERIC BUPROPION ,NIH| IN VIVO NMR METABOLIC STUDY OF REGIONAL CARDIAC ISCHEMIA ,NIH| Evaluation of Treatments and Services to People with Duchenne Muscular Dystrophy ,NIH| BIOLOGY OF THE BONE MARROW DERIVED 3A1 STEM CELL ,NIH| Novel Strategy for Perioperative Beta-Blocker Therapy ,NIH| GENETICS-InFORMATICS TRIAL (GIFT) OF WARFARIN TO PREVENT DVT ,NIH| 9th International Myotonic Dystrophy Consortium Meeting ,NIH| Biiostatistics ,NIH| Disease Progression in Myotonic Dystrophy ,NIH| EXPERIMENTAL THERAPEUTICS IN NEUROLOGICAL DISEASE ,NIH| Comp A-NY State Surveillance and Research of MD and Neuromuscular Disorders ,NIH| BIOENERGETIC MECHANISMS ,NIH| POSITRON EMISSION TOMOGRAPHIC IMAGING OF LUNG TRANSPLANT ,SSHRC ,NIH| Phase 2 Study of 4-Aminopyridine for the Treatment of Episodic Ataxia Type 2 ,NIH| Remediating Age Related Cognitive Decline: Mindfulness-Based Stress Reduction and Exercise ,NIH| Genetically Informed Smoking Cessation Trial ,NIH| Ocular Hypertension Treatment Study 20-Year Follow-up: Clinical Center Grant ,NIH| RNA-mediated mechanisms in the myotonic dystrophies ,NIH| 7th International Myotonic Dystrophy Consortium Meeting ,NIH| FOR-DMD: Double-blind randomized trial to optimize steroid regimen in Duchenne MD ,NIH| Washington University Institute of Clinical and Translational Sciences ,NIH| Tenth International Myotonic Dystrophy Consortium Meeting ,NIH| ANALYSIS OF THE E COLI STB HEAT STABLE ENTEROTOXINAuthors: Griggs, Robert C.; Miller, J. Phillip; Greenberg, Cheryl R.; Fehlings, Darcy L.; +11 AuthorsGriggs, Robert C.; Miller, J. Phillip; Greenberg, Cheryl R.; Fehlings, Darcy L.; Pestronk, Alan; Mendell, Jerry R.; Moxley, Richard T.; King, Wendy; Kissel, John T.; Cwik, Valerie; Vanasse, Michel; Florence, Julaine M.; Pandya, Shree; Dubow, Jordan S.; Meyer, James M.;Objective: To assess safety and efficacy of deflazacort (DFZ) and prednisone (PRED) vs placebo in Duchenne muscular dystrophy (DMD). Methods: This phase III, double-blind, randomized, placebo-controlled, multicenter study evaluated muscle strength among 196 boys aged 5–15 years with DMD during a 52-week period. In phase 1, participants were randomly assigned to receive treatment with DFZ 0.9 mg/kg/d, DFZ 1.2 mg/kg/d, PRED 0.75 mg/kg/d, or placebo for 12 weeks. In phase 2, placebo participants were randomly assigned to 1 of the 3 active treatment groups. Participants originally assigned to an active treatment continued that treatment for an additional 40 weeks. The primary efficacy endpoint was average change in muscle strength from baseline to week 12 compared with placebo. The study was completed in 1995. Results: All treatment groups (DFZ 0.9 mg/kg/d, DFZ 1.2 mg/kg/d, and PRED 0.75 mg/kg/d) demonstrated significant improvement in muscle strength compared with placebo at 12 weeks. Participants taking PRED had significantly more weight gain than placebo or both doses of DFZ at 12 weeks; at 52 weeks, participants taking PRED had significantly more weight gain than both DFZ doses. The most frequent adverse events in all 3 active treatment arms were Cushingoid appearance, erythema, hirsutism, increased weight, headache, and nasopharyngitis. Conclusions: After 12 weeks of treatment, PRED and both doses of DFZ improved muscle strength compared with placebo. Deflazacort was associated with less weight gain than PRED. Classification of evidence: This study provides Class I evidence that for boys with DMD, daily use of either DFZ and PRED is effective in preserving muscle strength over a 12-week period.
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For further information contact us at helpdesk@openaire.eu115 citations 115 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!visibility 2visibility views 2 download downloads 0 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2006 NetherlandsAcoustical Society of America (ASA) NIH | Training for Speech and H..., NIH | VERY-HIGH-FREQUENCY ULTRA..., NIH | DECISION PROCESSES IN DET... +6 projectsNIH| Training for Speech and Hearing Sciences ,NIH| VERY-HIGH-FREQUENCY ULTRASOUND ARRAYS FOR OPHTHALMOLOGY ,NIH| DECISION PROCESSES IN DETECTION AND DISCRIMINATION ,SSHRC ,NSERC ,NIH| Tumor Diagnosis through Enhanced Ultrasound Imaging ,NSF| Physical Modeling of the Piano ,NIH| NORMAL &IMPAIRED TEMPORAL PROCESSING OF COMPLEX SOUNDS ,NSF| Workshop on ToBI for Spontaneous English SpeechAuthors: Broersma, M.;Broersma, M.;Native and nonnative listeners categorized /v/ and /f/ at the end of English nonwords. For each participant, the duration of the previous vowel was kept constant, so that it was not informative and sometimes mismatched other information in the signal. Vowel duration was varied between participants. Previously presented results [M. Broersma, J. Acoust. Soc. Am. 117, 3809–3901 (2005)] showed that native English listeners relied strongly on the misleading vowel duration cue. For Dutch listeners, no effect of vowel duration was found. Due to the redundancy of information in the signal, Dutch listeners categorized the contrast more categorically than English listeners. New analyses investigated whether Dutch listeners did not attempt to use vowel duration at all, or whether they learned to ignore the misleading cue more easily than the English listeners did. The results showed that Dutch listeners did use vowel duration initially, but stopped using this cue after very few trials. By the end of the practice part (33 trials) the effect of vowel duration had fully disappeared. The English listeners used vowel duration as a voicing cue throughout the experiment. This suggests that it may be easier to learn to ignore uninformative perceptual cues in a nonnative language than in one’s native language.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1121/1.4786141&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Report 2006 NetherlandsAcoustical Society of America (ASA) NIH | DECISION PROCESSES IN DET..., NSERC, NIH | VERY-HIGH-FREQUENCY ULTRA... +6 projectsNIH| DECISION PROCESSES IN DETECTION AND DISCRIMINATION ,NSERC ,NIH| VERY-HIGH-FREQUENCY ULTRASOUND ARRAYS FOR OPHTHALMOLOGY ,NSF| Physical Modeling of the Piano ,SSHRC ,NIH| Tumor Diagnosis through Enhanced Ultrasound Imaging ,NIH| Training for Speech and Hearing Sciences ,NIH| NORMAL &IMPAIRED TEMPORAL PROCESSING OF COMPLEX SOUNDS ,NSF| Workshop on ToBI for Spontaneous English SpeechAuthors: Gussenhoven, C.;Gussenhoven, C.;doi: 10.1121/1.4786135
Workshop Enhancement and Multiplicity of cues. 6 juni 2006. 151st Meeting of the Acoustical Society of America Contains fulltext : 42157.pdf (Publisher’s version ) (Open Access) Providence, Rhode Island
NARCIS; Radboud Repo... arrow_drop_down NARCIS; Radboud RepositoryReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2006add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1121/1.4786135&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert NARCIS; Radboud Repo... arrow_drop_down NARCIS; Radboud RepositoryReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2006add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu- Scene content is predominantly conveyed by high spatial frequencies in scene-selective visual cortex
description Publicationkeyboard_double_arrow_right Article 2017Public Library of Science (PLoS) SSHRC, NIH | Neural and perceptual mec..., NIH | The Development of Catego... +1 projectsSSHRC ,NIH| Neural and perceptual mechanisms of spatial stability across eye movements ,NIH| The Development of Categorization ,NSERCAuthors: Daniel Berman; Julie D. Golomb; Dirk B. Walther;Daniel Berman; Julie D. Golomb; Dirk B. Walther;In complex real-world scenes, image content is conveyed by a large collection of intertwined visual features. The visual system disentangles these features in order to extract information about image content. Here, we investigate the role of one integral component: the content of spatial frequencies in an image. Specifically, we measure the amount of image content carried by low versus high spatial frequencies for the representation of real-world scenes in scene-selective regions of human visual cortex. To this end, we attempted to decode scene categories from the brain activity patterns of participants viewing scene images that contained the full spatial frequency spectrum, only low spatial frequencies, or only high spatial frequencies, all carefully controlled for contrast and luminance. Contrary to the findings from numerous behavioral studies and computational models that have highlighted how low spatial frequencies preferentially encode image content, decoding of scene categories from the scene-selective brain regions, including the parahippocampal place area (PPA), was significantly more accurate for high than low spatial frequency images. In fact, decoding accuracy was just as high for high spatial frequency images as for images containing the full spatial frequency spectrum in scene-selective areas PPA, RSC, OPA and object selective area LOC. We also found an interesting dissociation between the posterior and anterior subdivisions of PPA: categories were decodable from both high and low spatial frequency scenes in posterior PPA but only from high spatial frequency scenes in anterior PPA; and spatial frequency was explicitly decodable from posterior but not anterior PPA. Our results are consistent with recent findings that line drawings, which consist almost entirely of high spatial frequencies, elicit a neural representation of scene categories that is equivalent to that of full-spectrum color photographs. Collectively, these findings demonstrate the importance of high spatial frequencies for conveying the content of complex real-world scenes.
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For further information contact us at helpdesk@openaire.eu28 citations 28 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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description Publicationkeyboard_double_arrow_right Article 2016Ovid Technologies (Wolters Kluwer Health) NIH | Phase 2 Study of Mexileti..., NIH | Novel Molecular Mechanism..., CIHR +24 projectsNIH| Phase 2 Study of Mexiletine for the Treatment of Myotonic Dystrophy ,NIH| Novel Molecular Mechanisms of Neuromuscular Disease: Implications for Therapy ,CIHR ,NIH| BIOEQUIVALENCE AND CLINICAL IMPLICATIONS OF GENERIC BUPROPION ,NIH| IN VIVO NMR METABOLIC STUDY OF REGIONAL CARDIAC ISCHEMIA ,NIH| Evaluation of Treatments and Services to People with Duchenne Muscular Dystrophy ,NIH| BIOLOGY OF THE BONE MARROW DERIVED 3A1 STEM CELL ,NIH| Novel Strategy for Perioperative Beta-Blocker Therapy ,NIH| GENETICS-InFORMATICS TRIAL (GIFT) OF WARFARIN TO PREVENT DVT ,NIH| 9th International Myotonic Dystrophy Consortium Meeting ,NIH| Biiostatistics ,NIH| Disease Progression in Myotonic Dystrophy ,NIH| EXPERIMENTAL THERAPEUTICS IN NEUROLOGICAL DISEASE ,NIH| Comp A-NY State Surveillance and Research of MD and Neuromuscular Disorders ,NIH| BIOENERGETIC MECHANISMS ,NIH| POSITRON EMISSION TOMOGRAPHIC IMAGING OF LUNG TRANSPLANT ,SSHRC ,NIH| Phase 2 Study of 4-Aminopyridine for the Treatment of Episodic Ataxia Type 2 ,NIH| Remediating Age Related Cognitive Decline: Mindfulness-Based Stress Reduction and Exercise ,NIH| Genetically Informed Smoking Cessation Trial ,NIH| Ocular Hypertension Treatment Study 20-Year Follow-up: Clinical Center Grant ,NIH| RNA-mediated mechanisms in the myotonic dystrophies ,NIH| 7th International Myotonic Dystrophy Consortium Meeting ,NIH| FOR-DMD: Double-blind randomized trial to optimize steroid regimen in Duchenne MD ,NIH| Washington University Institute of Clinical and Translational Sciences ,NIH| Tenth International Myotonic Dystrophy Consortium Meeting ,NIH| ANALYSIS OF THE E COLI STB HEAT STABLE ENTEROTOXINAuthors: Griggs, Robert C.; Miller, J. Phillip; Greenberg, Cheryl R.; Fehlings, Darcy L.; +11 AuthorsGriggs, Robert C.; Miller, J. Phillip; Greenberg, Cheryl R.; Fehlings, Darcy L.; Pestronk, Alan; Mendell, Jerry R.; Moxley, Richard T.; King, Wendy; Kissel, John T.; Cwik, Valerie; Vanasse, Michel; Florence, Julaine M.; Pandya, Shree; Dubow, Jordan S.; Meyer, James M.;Objective: To assess safety and efficacy of deflazacort (DFZ) and prednisone (PRED) vs placebo in Duchenne muscular dystrophy (DMD). Methods: This phase III, double-blind, randomized, placebo-controlled, multicenter study evaluated muscle strength among 196 boys aged 5–15 years with DMD during a 52-week period. In phase 1, participants were randomly assigned to receive treatment with DFZ 0.9 mg/kg/d, DFZ 1.2 mg/kg/d, PRED 0.75 mg/kg/d, or placebo for 12 weeks. In phase 2, placebo participants were randomly assigned to 1 of the 3 active treatment groups. Participants originally assigned to an active treatment continued that treatment for an additional 40 weeks. The primary efficacy endpoint was average change in muscle strength from baseline to week 12 compared with placebo. The study was completed in 1995. Results: All treatment groups (DFZ 0.9 mg/kg/d, DFZ 1.2 mg/kg/d, and PRED 0.75 mg/kg/d) demonstrated significant improvement in muscle strength compared with placebo at 12 weeks. Participants taking PRED had significantly more weight gain than placebo or both doses of DFZ at 12 weeks; at 52 weeks, participants taking PRED had significantly more weight gain than both DFZ doses. The most frequent adverse events in all 3 active treatment arms were Cushingoid appearance, erythema, hirsutism, increased weight, headache, and nasopharyngitis. Conclusions: After 12 weeks of treatment, PRED and both doses of DFZ improved muscle strength compared with placebo. Deflazacort was associated with less weight gain than PRED. Classification of evidence: This study provides Class I evidence that for boys with DMD, daily use of either DFZ and PRED is effective in preserving muscle strength over a 12-week period.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu115 citations 115 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!visibility 2visibility views 2 download downloads 0 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1212/wnl.0000000000003217&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2006 NetherlandsAcoustical Society of America (ASA) NIH | Training for Speech and H..., NIH | VERY-HIGH-FREQUENCY ULTRA..., NIH | DECISION PROCESSES IN DET... +6 projectsNIH| Training for Speech and Hearing Sciences ,NIH| VERY-HIGH-FREQUENCY ULTRASOUND ARRAYS FOR OPHTHALMOLOGY ,NIH| DECISION PROCESSES IN DETECTION AND DISCRIMINATION ,SSHRC ,NSERC ,NIH| Tumor Diagnosis through Enhanced Ultrasound Imaging ,NSF| Physical Modeling of the Piano ,NIH| NORMAL &IMPAIRED TEMPORAL PROCESSING OF COMPLEX SOUNDS ,NSF| Workshop on ToBI for Spontaneous English SpeechAuthors: Broersma, M.;Broersma, M.;Native and nonnative listeners categorized /v/ and /f/ at the end of English nonwords. For each participant, the duration of the previous vowel was kept constant, so that it was not informative and sometimes mismatched other information in the signal. Vowel duration was varied between participants. Previously presented results [M. Broersma, J. Acoust. Soc. Am. 117, 3809–3901 (2005)] showed that native English listeners relied strongly on the misleading vowel duration cue. For Dutch listeners, no effect of vowel duration was found. Due to the redundancy of information in the signal, Dutch listeners categorized the contrast more categorically than English listeners. New analyses investigated whether Dutch listeners did not attempt to use vowel duration at all, or whether they learned to ignore the misleading cue more easily than the English listeners did. The results showed that Dutch listeners did use vowel duration initially, but stopped using this cue after very few trials. By the end of the practice part (33 trials) the effect of vowel duration had fully disappeared. The English listeners used vowel duration as a voicing cue throughout the experiment. This suggests that it may be easier to learn to ignore uninformative perceptual cues in a nonnative language than in one’s native language.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1121/1.4786141&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1121/1.4786141&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Report 2006 NetherlandsAcoustical Society of America (ASA) NIH | DECISION PROCESSES IN DET..., NSERC, NIH | VERY-HIGH-FREQUENCY ULTRA... +6 projectsNIH| DECISION PROCESSES IN DETECTION AND DISCRIMINATION ,NSERC ,NIH| VERY-HIGH-FREQUENCY ULTRASOUND ARRAYS FOR OPHTHALMOLOGY ,NSF| Physical Modeling of the Piano ,SSHRC ,NIH| Tumor Diagnosis through Enhanced Ultrasound Imaging ,NIH| Training for Speech and Hearing Sciences ,NIH| NORMAL &IMPAIRED TEMPORAL PROCESSING OF COMPLEX SOUNDS ,NSF| Workshop on ToBI for Spontaneous English SpeechAuthors: Gussenhoven, C.;Gussenhoven, C.;doi: 10.1121/1.4786135
Workshop Enhancement and Multiplicity of cues. 6 juni 2006. 151st Meeting of the Acoustical Society of America Contains fulltext : 42157.pdf (Publisher’s version ) (Open Access) Providence, Rhode Island
NARCIS; Radboud Repo... arrow_drop_down NARCIS; Radboud RepositoryReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2006add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1121/1.4786135&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert NARCIS; Radboud Repo... arrow_drop_down NARCIS; Radboud RepositoryReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2007Radboud Repository; NARCISReport . Conference object . 2006add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1121/1.4786135&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu- Scene content is predominantly conveyed by high spatial frequencies in scene-selective visual cortex
description Publicationkeyboard_double_arrow_right Article 2017Public Library of Science (PLoS) SSHRC, NIH | Neural and perceptual mec..., NIH | The Development of Catego... +1 projectsSSHRC ,NIH| Neural and perceptual mechanisms of spatial stability across eye movements ,NIH| The Development of Categorization ,NSERCAuthors: Daniel Berman; Julie D. Golomb; Dirk B. Walther;Daniel Berman; Julie D. Golomb; Dirk B. Walther;In complex real-world scenes, image content is conveyed by a large collection of intertwined visual features. The visual system disentangles these features in order to extract information about image content. Here, we investigate the role of one integral component: the content of spatial frequencies in an image. Specifically, we measure the amount of image content carried by low versus high spatial frequencies for the representation of real-world scenes in scene-selective regions of human visual cortex. To this end, we attempted to decode scene categories from the brain activity patterns of participants viewing scene images that contained the full spatial frequency spectrum, only low spatial frequencies, or only high spatial frequencies, all carefully controlled for contrast and luminance. Contrary to the findings from numerous behavioral studies and computational models that have highlighted how low spatial frequencies preferentially encode image content, decoding of scene categories from the scene-selective brain regions, including the parahippocampal place area (PPA), was significantly more accurate for high than low spatial frequency images. In fact, decoding accuracy was just as high for high spatial frequency images as for images containing the full spatial frequency spectrum in scene-selective areas PPA, RSC, OPA and object selective area LOC. We also found an interesting dissociation between the posterior and anterior subdivisions of PPA: categories were decodable from both high and low spatial frequency scenes in posterior PPA but only from high spatial frequency scenes in anterior PPA; and spatial frequency was explicitly decodable from posterior but not anterior PPA. Our results are consistent with recent findings that line drawings, which consist almost entirely of high spatial frequencies, elicit a neural representation of scene categories that is equivalent to that of full-spectrum color photographs. Collectively, these findings demonstrate the importance of high spatial frequencies for conveying the content of complex real-world scenes.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1371/journal.pone.0189828&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu28 citations 28 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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