Publication date: Available online 22 April 2017
Source:Cortex
Author(s): Stéphanie Rossit, Monika Harvey, Stephen H. Butler, Larissa Szymanek, Stéphanie Morand, Simona Monaco, Robert D. McIntosh
An influential model of vision suggests the presence of two visual streams within the brain: a dorsal occipito-parietal stream which mediates action and a ventral occipito-temporal stream which mediates perception. One of the cornerstones of this model is DF, a patient with visual form agnosia following bilateral ventral stream lesions. Despite her inability to identify and distinguish visual stimuli, DF can still use visual information to control her hand actions towards these stimuli. These observations have been widely interpreted as demonstrating a double dissociation from optic ataxia, a condition observed after bilateral dorsal stream damage in which patients are unable to act towards objects that they can recognize. In Experiment 1, we investigated how patient DF performed on the classical diagnostic task for optic ataxia, reaching in central and peripheral vision. We replicated recent findings that DF is remarkably inaccurate when reaching to peripheral targets, but not when reaching in free vision. In addition we present new evidence that her peripheral reaching errors follow the optic ataxia pattern increasing with target eccentricity and being biased towards fixation. In Experiments 2 and 3, for the first time we examined DF's on-line control of reaching using a double-step paradigm in fixation-controlled and free-vision versions of the task. DF was impaired when performing fast on-line corrections on all conditions tested, similarly to optic ataxia patients. Our findings question the long-standing assumption that DF's dorsal visual stream is functionally intact and that her on-line visuomotor control is spared. In contrast, in addition to visual form agnosia, DF also has visuomotor symptoms of optic ataxia which are most likely explained by bilateral damage to the superior parietal occipital cortex. We thus conclude that patient DF can no longer be considered as an appropriate single-case model for testing the neural basis of perception and action dissociations.
http://ift.tt/2q1ZcMq
Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
Αρχειοθήκη ιστολογίου
-
►
2023
(391)
- ► Φεβρουαρίου (200)
- ► Ιανουαρίου (191)
-
►
2022
(2843)
- ► Δεκεμβρίου (161)
- ► Σεπτεμβρίου (219)
- ► Φεβρουαρίου (264)
- ► Ιανουαρίου (280)
-
►
2021
(5625)
- ► Δεκεμβρίου (231)
- ► Σεπτεμβρίου (345)
- ► Φεβρουαρίου (620)
-
►
2020
(2065)
- ► Δεκεμβρίου (535)
- ► Σεπτεμβρίου (222)
- ► Φεβρουαρίου (28)
-
►
2019
(9608)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (3791)
- ► Ιανουαρίου (3737)
-
►
2018
(69720)
- ► Δεκεμβρίου (3507)
- ► Σεπτεμβρίου (3851)
- ► Φεβρουαρίου (8116)
- ► Ιανουαρίου (7758)
-
▼
2017
(111579)
- ► Δεκεμβρίου (7718)
- ► Σεπτεμβρίου (7549)
-
▼
Απριλίου
(11636)
-
▼
Απρ 22
(409)
- The role of Compensatory Health Beliefs in eating ...
- Turkish version of the Intuitive Eating Scale-2: V...
- Pathogenic CD4+ T cells in patients with asthma
- Aggressive Behavior in Patients with Schizophrenia...
- Failure of the vascular hypothesis of multiple scl...
- Multiple cerebral fusiform aneurysms involving the...
- GRN mutation in a patient with a behavioral varian...
- Status of the brain antioxidant system at differen...
- Frequency and topography of small cerebrovascular ...
- Evidence from spatial pattern analysis for the ana...
- Mesenchymal/proangiogenic factor YKL-40 related to...
- Dysembryoplastic neuroepithelial tumour: insight i...
- Current evidence and the evolving role of sunitini...
- Conversion Disorder, Functional Neurological Sympt...
- Conversion Disorder, Functional Neurological Sympt...
- Positive airway pressure adherence and mask interf...
- Positive airway pressure adherence and mask interf...
- Impact of dose and surface features on plasmatic a...
- Inheritable and sporadic non-autoimmune hyperthyro...
- Erratum
- New Dermatologic Surgery iPad app
- Prevention of Thyroidectomy Scars in Korean Patien...
- Preliminary Comparison of Fractional Laser with Fr...
- Retrospective Evaluation of Micro-focused Ultrasou...
- Dynamic Hypoxia in Scar Tissue During Human Hypert...
- Mistaken Conclusions in a Nonmelanoma Skin Cancer ...
- Evaluation of Nerves in Mohs Micrographic Surgery:...
- Comparison Study of Fractional Carbon Dioxide Lase...
- Advantages of the Half-Circle Suture Needle for Re...
- Collagenase Followed by Compression for the Treatm...
- Safety of Botulinum Toxin A in Aesthetic Treatment...
- Superficial Dermabrasion Versus Topical Tretinoin ...
- Free App for Consultation Imaging
- Use of Intralesional Poly-L-Lactic Acid in the Tre...
- Reversible Myopathy and Ophthalmoparesis After Low...
- Rapid Development of Squamous Cell Carcinoma after...
- Neoadjuvant Intralesional Methotrexate Before Surg...
- Spotlighting the Role of Photodynamic Therapy in C...
- Understanding and Use of the American Joint Commit...
- Granin-derived Peptides
- FKBP51s signature in peripheral blood mononuclear ...
- Comparative study of three kinds of fibula cutting...
- Cochlear implantation in children with anomalous c...
- In-ear medical devices for acoustic therapies in t...
- The evaluation of pattern and quality of sleep in ...
- Pleomorphic liposarcoma of the head and neck: Pres...
- Characterization of major natural and anthropogeni...
- Modelling drivers and distribution of lead and zin...
- Surface sediment quality relative to port activiti...
- Pathogenic CD4+ T cells in patients with asthma
- Physical performance in newly diagnosed hypothyroi...
- Is OperaVOX a clinically useful tool for the asses...
- Is OperaVOX a clinically useful tool for the asses...
- Conservative management of mallet injuries: A nati...
- Internationally adopted children with cleft lip an...
- Delayed Primary Closure of Extensive Wounds Using ...
- External Validation of the Breast Reconstruction R...
- An innovative method of planning and displaying fl...
- A Retrospective Study: Multivariate Logistic Regre...
- Postoperative outcomes of two- and three-dimension...
- Facial skin rejuvenation by autologous dermal micr...
- Women with symptoms of sleep-disordered breathing ...
- Evaluation of the Effect of JZP-110 in Patients wi...
- Solvent-dependent transformation of aflatoxin B 1 ...
- Quality and readability of websites for patient in...
- Point-of-care ultrasound for oral and maxillofacia...
- The evaluation of pattern and quality of sleep in ...
- Cochlear implantation in children with anomalous c...
- The evaluation of pattern and quality of sleep in ...
- Cochlear implantation in children with anomalous c...
- Parotid gland involvement as an initial presentati...
- Dysphagia in a Patient with Cervical Dystonia
- Ototoxicity of boric acid powder in a rat animal m...
- Trends in the prevalence of extreme obesity among ...
- Genotype-phenotype correlation in paediatric pheoc...
- Preoperative radiation therapy: The ‘new’ targeted...
- Utilidad de la 18F-FDG PET/TC en el linfoma cerebr...
- Retrospective evaluation of the effectiveness of r...
- CT- and MRI-based gross target volume comparison i...
- Estimation of peripheral dose from Co60 beam in wa...
- Prospective evaluation of anxiety, depression and ...
- Dosimetric impact in the dose–volume histograms of...
- The semiconductor diode detector response as a fun...
- Coping with loss of ability vs. acceptance of dise...
- Is immunohistochemical evaluation of p16 in oropha...
- Editorial Board
- Phytoliths indicate significant arboreal cover at ...
- The affinities of Homo floresiensis based on phylo...
- Mechanisms of hemispheric lateralization: A replic...
- Impaired peripheral reaching and on-line correctio...
- Long-term effects of angiotensin-(1–7) on lipid me...
- Instruments for evaluating pharmacotherapy interve...
- Causes and cures XV: Synthesis and integration
- The influence of spatial patterns of capillary net...
- Differentiating Middle Ear and Medial Olivocochlea...
- Nitrogen fertility and abiotic stresses management...
- Differentiating Middle Ear and Medial Olivocochlea...
- Immunomodulatory Functions of Neuronal Guidance Pr...
- INTERSTITIAL TELOMERIC SEQUENCES IN VERTEBRATE CHR...
- The Role of Vitamin D in the Immune System as a Pr...
-
▼
Απρ 22
(409)
- ► Φεβρουαρίου (10753)
- ► Ιανουαρίου (10529)
-
►
2016
(16402)
- ► Δεκεμβρίου (7478)
- ► Φεβρουαρίου (900)
- ► Ιανουαρίου (1250)
! # Ola via Alexandros G.Sfakianakis on Inoreader
Η λίστα ιστολογίων μου
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Αρχειοθήκη ιστολογίου
-
►
2023
(391)
- ► Φεβρουαρίου (200)
- ► Ιανουαρίου (191)
-
►
2022
(2843)
- ► Δεκεμβρίου (161)
- ► Σεπτεμβρίου (219)
- ► Φεβρουαρίου (264)
- ► Ιανουαρίου (280)
-
►
2021
(5625)
- ► Δεκεμβρίου (231)
- ► Σεπτεμβρίου (345)
- ► Φεβρουαρίου (620)
-
►
2020
(2065)
- ► Δεκεμβρίου (535)
- ► Σεπτεμβρίου (222)
- ► Φεβρουαρίου (28)
-
►
2019
(9608)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (3791)
- ► Ιανουαρίου (3737)
-
►
2018
(69720)
- ► Δεκεμβρίου (3507)
- ► Σεπτεμβρίου (3851)
- ► Φεβρουαρίου (8116)
- ► Ιανουαρίου (7758)
-
▼
2017
(111579)
- ► Δεκεμβρίου (7718)
- ► Σεπτεμβρίου (7549)
-
▼
Απριλίου
(11636)
-
▼
Απρ 22
(409)
- The role of Compensatory Health Beliefs in eating ...
- Turkish version of the Intuitive Eating Scale-2: V...
- Pathogenic CD4+ T cells in patients with asthma
- Aggressive Behavior in Patients with Schizophrenia...
- Failure of the vascular hypothesis of multiple scl...
- Multiple cerebral fusiform aneurysms involving the...
- GRN mutation in a patient with a behavioral varian...
- Status of the brain antioxidant system at differen...
- Frequency and topography of small cerebrovascular ...
- Evidence from spatial pattern analysis for the ana...
- Mesenchymal/proangiogenic factor YKL-40 related to...
- Dysembryoplastic neuroepithelial tumour: insight i...
- Current evidence and the evolving role of sunitini...
- Conversion Disorder, Functional Neurological Sympt...
- Conversion Disorder, Functional Neurological Sympt...
- Positive airway pressure adherence and mask interf...
- Positive airway pressure adherence and mask interf...
- Impact of dose and surface features on plasmatic a...
- Inheritable and sporadic non-autoimmune hyperthyro...
- Erratum
- New Dermatologic Surgery iPad app
- Prevention of Thyroidectomy Scars in Korean Patien...
- Preliminary Comparison of Fractional Laser with Fr...
- Retrospective Evaluation of Micro-focused Ultrasou...
- Dynamic Hypoxia in Scar Tissue During Human Hypert...
- Mistaken Conclusions in a Nonmelanoma Skin Cancer ...
- Evaluation of Nerves in Mohs Micrographic Surgery:...
- Comparison Study of Fractional Carbon Dioxide Lase...
- Advantages of the Half-Circle Suture Needle for Re...
- Collagenase Followed by Compression for the Treatm...
- Safety of Botulinum Toxin A in Aesthetic Treatment...
- Superficial Dermabrasion Versus Topical Tretinoin ...
- Free App for Consultation Imaging
- Use of Intralesional Poly-L-Lactic Acid in the Tre...
- Reversible Myopathy and Ophthalmoparesis After Low...
- Rapid Development of Squamous Cell Carcinoma after...
- Neoadjuvant Intralesional Methotrexate Before Surg...
- Spotlighting the Role of Photodynamic Therapy in C...
- Understanding and Use of the American Joint Commit...
- Granin-derived Peptides
- FKBP51s signature in peripheral blood mononuclear ...
- Comparative study of three kinds of fibula cutting...
- Cochlear implantation in children with anomalous c...
- In-ear medical devices for acoustic therapies in t...
- The evaluation of pattern and quality of sleep in ...
- Pleomorphic liposarcoma of the head and neck: Pres...
- Characterization of major natural and anthropogeni...
- Modelling drivers and distribution of lead and zin...
- Surface sediment quality relative to port activiti...
- Pathogenic CD4+ T cells in patients with asthma
- Physical performance in newly diagnosed hypothyroi...
- Is OperaVOX a clinically useful tool for the asses...
- Is OperaVOX a clinically useful tool for the asses...
- Conservative management of mallet injuries: A nati...
- Internationally adopted children with cleft lip an...
- Delayed Primary Closure of Extensive Wounds Using ...
- External Validation of the Breast Reconstruction R...
- An innovative method of planning and displaying fl...
- A Retrospective Study: Multivariate Logistic Regre...
- Postoperative outcomes of two- and three-dimension...
- Facial skin rejuvenation by autologous dermal micr...
- Women with symptoms of sleep-disordered breathing ...
- Evaluation of the Effect of JZP-110 in Patients wi...
- Solvent-dependent transformation of aflatoxin B 1 ...
- Quality and readability of websites for patient in...
- Point-of-care ultrasound for oral and maxillofacia...
- The evaluation of pattern and quality of sleep in ...
- Cochlear implantation in children with anomalous c...
- The evaluation of pattern and quality of sleep in ...
- Cochlear implantation in children with anomalous c...
- Parotid gland involvement as an initial presentati...
- Dysphagia in a Patient with Cervical Dystonia
- Ototoxicity of boric acid powder in a rat animal m...
- Trends in the prevalence of extreme obesity among ...
- Genotype-phenotype correlation in paediatric pheoc...
- Preoperative radiation therapy: The ‘new’ targeted...
- Utilidad de la 18F-FDG PET/TC en el linfoma cerebr...
- Retrospective evaluation of the effectiveness of r...
- CT- and MRI-based gross target volume comparison i...
- Estimation of peripheral dose from Co60 beam in wa...
- Prospective evaluation of anxiety, depression and ...
- Dosimetric impact in the dose–volume histograms of...
- The semiconductor diode detector response as a fun...
- Coping with loss of ability vs. acceptance of dise...
- Is immunohistochemical evaluation of p16 in oropha...
- Editorial Board
- Phytoliths indicate significant arboreal cover at ...
- The affinities of Homo floresiensis based on phylo...
- Mechanisms of hemispheric lateralization: A replic...
- Impaired peripheral reaching and on-line correctio...
- Long-term effects of angiotensin-(1–7) on lipid me...
- Instruments for evaluating pharmacotherapy interve...
- Causes and cures XV: Synthesis and integration
- The influence of spatial patterns of capillary net...
- Differentiating Middle Ear and Medial Olivocochlea...
- Nitrogen fertility and abiotic stresses management...
- Differentiating Middle Ear and Medial Olivocochlea...
- Immunomodulatory Functions of Neuronal Guidance Pr...
- INTERSTITIAL TELOMERIC SEQUENCES IN VERTEBRATE CHR...
- The Role of Vitamin D in the Immune System as a Pr...
-
▼
Απρ 22
(409)
- ► Φεβρουαρίου (10753)
- ► Ιανουαρίου (10529)
-
►
2016
(16402)
- ► Δεκεμβρίου (7478)
- ► Φεβρουαρίου (900)
- ► Ιανουαρίου (1250)
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου