Publication date: 1 February 2018
Source:NeuroImage, Volume 166
Author(s): Lorenzo Magazzini, Krish D. Singh
Oscillatory synchronization in the gamma frequency range has been proposed as a neuronal mechanism to prioritize processing of relevant stimuli over competing ones. Recent studies in animals found that selective spatial attention enhanced gamma-band synchronization in high-order visual areas (V4) and increased the gamma peak frequency in V1. The existence of such mechanisms in the human visual system is yet to be fully demonstrated. In this study, we used MEG, in combination with an optimised stimulus design, to record visual gamma oscillations from human early visual cortex, while participants performed a visuospatial attention cueing task. First, we reconstructed virtual sensors in V1/V2, where gamma oscillations were strongly induced by visual stimulation alone. Second, following the results of a statistical comparison between conditions of attention, we reconstructed cortical activity also in inferior occipital-temporal regions (V4). The results indicated that gamma amplitude was modulated by spatial attention across the cortical hierarchy, both in the early visual cortex and in higher-order regions of the ventral visual pathway. In contrast, we found no evidence for an increase in the gamma peak frequency in V1/V2 with attention. The gamma response tended to peak earlier in V1/V2 than in V4 by approximately 70 ms, consistent with a feed-forward role of gamma-band activity in propagating sensory representations across the visual cortical hierarchy. Together, these findings suggest that differences in experimental design or methodology can account for the inconsistencies in previous animal and human studies. Furthermore, our results are in line with the hypothesis of enhanced gamma-band synchronization as an attentional mechanism in the human visual cortex.
http://ift.tt/2zvIjSq
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)
-
▼
Νοεμβρίου
(7424)
-
▼
Νοε 10
(340)
- Expression and functional characterization of tach...
- A systematic review of secondary cerebrospinal flu...
- Beyond borders and sinuses: Rhinology and allergy ...
- The role of regulatory T cells in the regulation o...
- Sinonasal T-cell expression of cytotoxic mediators...
- Role of adenosine monophosphate‐activated protein ...
- Effectiveness of intranasal sodium hyaluronate in ...
- Gender-specific differences in serum immunoglobuli...
- The relationship between social determinants of he...
- Biocompatibility and pharmacokinetics of fluticaso...
- Role of exhaled nasal nitric oxide in distinguishi...
- Vitamin D3 deficiency and its association with nas...
- Influence of chitosan-based dressing on prevention...
- Endonasal endoscopic management of frontal sinus c...
- Comparison of two concentrations of triamcinolone ...
- Factors that contribute to disagreement in satisfa...
- Acute radiology rarely confirms sinus disease in s...
- Editorial Board ((ofc))
- Quercetin protects jejunal mucosa from experimenta...
- Differences in self-advocacy among hard of hearing...
- Absence of delay in spontaneous use of gestures in...
- Contrast-enhanced imaging features and differentia...
- Benefit and clinical significance of retrospective...
- Author index∗∗July, pp. 1-196; August, pp. 197-390...
- Subject index
- Editorial Board
- Topical 15% resorcinol for hidradenitis suppurativ...
- The water-drop test for the diagnosis of koilonychia
- Doctors' mental health, burnout, and suicidality: ...
- Cover Sheet for Index
- Circumventing iPLEDGE: Circumventing ethical respo...
- Injection of filler for volume replacement of the ...
- Dermatology Calendar
- Iotaderma #286
- Lymphedema
- A novel clinical sign to aid in the diagnosis of s...
- Inpatient dermatology consultations: Motivation an...
- The hungry caterpillar flap: A variant of the V-to...
- Information for Readers
- Correction of vermilion lip retraction after mucos...
- High-risk category for early annual ophthalmology ...
- November iotaderma (#285)
- Reply to: Comment on “Efficacy and safety of etane...
- Rapid screening of starter cultures for maari base...
- Reintroducing the Sodium–Iodide Symporter to Anapl...
- Are Evidence-Based Guidelines Reflected in Clinica...
- Reintroducing the Sodium–Iodide Symporter to Anapl...
- Are Evidence-Based Guidelines Reflected in Clinica...
- Cortical Correlates of Binaural Temporal Processin...
- Olivocochlear Efferent Activity Is Associated With...
- Disturbances in the control of capillary flow in a...
- Multimodal MRI quantification of the common neuros...
- Aposematism and crypsis are not enough to explain ...
- Alignment Strategy for Constricted Maxillary Denta...
- Firm Elevation of Reconstructed Auricle Using Poly...
- Valgus Hindfoot Deformity Secondary to Neonatal In...
- Comparative Cost Analysis of Single and Mutli-Stag...
- Internal Distraction Resulted in Improved Patient-...
- Strengthening Evidence in Cleft and Craniofacial S...
- A Novel Secretome Biotherapeutic Influences Regene...
- Drug Release: Proper Control to Help Clinical Appl...
- Review of "Outcomes of Concurrent Operations: Resu...
- Treatment of Maxillary Hypoplasia in Cleft Lip and...
- Cone Beam Computed Tomography Assessment of Access...
- A Personal Approach to Bilateral Cleft Lip Repair.
- Use of Acellular Dermal Matrix in Craniosynostosis.
- Effect of Long-Term Use of Facemask With Miniplate...
- Oral-Health-Related Quality of Life After Surgical...
- Image processing strategies based on saliency segm...
- Editorial Board
- Contents
- Future and recent issues
- Information for authors
- Masthead
- In Pursuit of Fellowship: Results from a 2016 Surv...
- Perioperative Internal Iliac Artery Balloon Occlus...
- The effect of mindful eating on subsequent intake ...
- Highlights in immune response, microbiome and prec...
- Pendular Seesaw Nystagmus in a Patient With a Gian...
- Neuro-Ophthalmology at a Tertiary Eye Care Centre ...
- Weighing the Risks and Benefits of Antidepressants...
- Optic Nerve Head Drusen: The Relationship Between ...
- Intraventricular vein thrombosis in a patient with...
- Nurturing Neurosurgery with basics and compassion ...
- Therapeutic plasma exchange in a patient of myasth...
- Founders of Indian Neurosciences: Professor Bimal ...
- Lessons learnt from accidental spillage of glue be...
- “Against the tide, nothing to hide”- the saga of a...
- Advanced magnetic resonance imaging in the diagnos...
- Small vessel CNS vasculitis-optimism and challenge...
- The cover page
- Central nervous system vasculitis imaging: Simplified
- A longitudinal study of retinal nerve fibre layer ...
- Cardiomyopathy in acromegaly and the effect of tra...
- Unexpected cause of leg pain in a patient with low...
- Echocardiographic improvements following transsphe...
- Dorsolumbar fungal (aspergillus) epidural granulom...
- Demonstration of autonomic dysfunction in traumati...
- Spinal model for teaching and training
- Assessment of autonomic dysfunction in traumatic b...
-
▼
Νοε 10
(340)
- ► Σεπτεμβρίου (7549)
- ► Φεβρουαρίου (10753)
- ► Ιανουαρίου (10529)
-
►
2016
(16402)
- ► Δεκεμβρίου (7478)
- ► Φεβρουαρίου (900)
- ► Ιανουαρίου (1250)
! # Ola via Alexandros G.Sfakianakis on Inoreader
Η λίστα ιστολογίων μου
Παρασκευή 10 Νοεμβρίου 2017
Spatial attention modulates visual gamma oscillations across the human ventral stream
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)
-
▼
Νοεμβρίου
(7424)
-
▼
Νοε 10
(340)
- Expression and functional characterization of tach...
- A systematic review of secondary cerebrospinal flu...
- Beyond borders and sinuses: Rhinology and allergy ...
- The role of regulatory T cells in the regulation o...
- Sinonasal T-cell expression of cytotoxic mediators...
- Role of adenosine monophosphate‐activated protein ...
- Effectiveness of intranasal sodium hyaluronate in ...
- Gender-specific differences in serum immunoglobuli...
- The relationship between social determinants of he...
- Biocompatibility and pharmacokinetics of fluticaso...
- Role of exhaled nasal nitric oxide in distinguishi...
- Vitamin D3 deficiency and its association with nas...
- Influence of chitosan-based dressing on prevention...
- Endonasal endoscopic management of frontal sinus c...
- Comparison of two concentrations of triamcinolone ...
- Factors that contribute to disagreement in satisfa...
- Acute radiology rarely confirms sinus disease in s...
- Editorial Board ((ofc))
- Quercetin protects jejunal mucosa from experimenta...
- Differences in self-advocacy among hard of hearing...
- Absence of delay in spontaneous use of gestures in...
- Contrast-enhanced imaging features and differentia...
- Benefit and clinical significance of retrospective...
- Author index∗∗July, pp. 1-196; August, pp. 197-390...
- Subject index
- Editorial Board
- Topical 15% resorcinol for hidradenitis suppurativ...
- The water-drop test for the diagnosis of koilonychia
- Doctors' mental health, burnout, and suicidality: ...
- Cover Sheet for Index
- Circumventing iPLEDGE: Circumventing ethical respo...
- Injection of filler for volume replacement of the ...
- Dermatology Calendar
- Iotaderma #286
- Lymphedema
- A novel clinical sign to aid in the diagnosis of s...
- Inpatient dermatology consultations: Motivation an...
- The hungry caterpillar flap: A variant of the V-to...
- Information for Readers
- Correction of vermilion lip retraction after mucos...
- High-risk category for early annual ophthalmology ...
- November iotaderma (#285)
- Reply to: Comment on “Efficacy and safety of etane...
- Rapid screening of starter cultures for maari base...
- Reintroducing the Sodium–Iodide Symporter to Anapl...
- Are Evidence-Based Guidelines Reflected in Clinica...
- Reintroducing the Sodium–Iodide Symporter to Anapl...
- Are Evidence-Based Guidelines Reflected in Clinica...
- Cortical Correlates of Binaural Temporal Processin...
- Olivocochlear Efferent Activity Is Associated With...
- Disturbances in the control of capillary flow in a...
- Multimodal MRI quantification of the common neuros...
- Aposematism and crypsis are not enough to explain ...
- Alignment Strategy for Constricted Maxillary Denta...
- Firm Elevation of Reconstructed Auricle Using Poly...
- Valgus Hindfoot Deformity Secondary to Neonatal In...
- Comparative Cost Analysis of Single and Mutli-Stag...
- Internal Distraction Resulted in Improved Patient-...
- Strengthening Evidence in Cleft and Craniofacial S...
- A Novel Secretome Biotherapeutic Influences Regene...
- Drug Release: Proper Control to Help Clinical Appl...
- Review of "Outcomes of Concurrent Operations: Resu...
- Treatment of Maxillary Hypoplasia in Cleft Lip and...
- Cone Beam Computed Tomography Assessment of Access...
- A Personal Approach to Bilateral Cleft Lip Repair.
- Use of Acellular Dermal Matrix in Craniosynostosis.
- Effect of Long-Term Use of Facemask With Miniplate...
- Oral-Health-Related Quality of Life After Surgical...
- Image processing strategies based on saliency segm...
- Editorial Board
- Contents
- Future and recent issues
- Information for authors
- Masthead
- In Pursuit of Fellowship: Results from a 2016 Surv...
- Perioperative Internal Iliac Artery Balloon Occlus...
- The effect of mindful eating on subsequent intake ...
- Highlights in immune response, microbiome and prec...
- Pendular Seesaw Nystagmus in a Patient With a Gian...
- Neuro-Ophthalmology at a Tertiary Eye Care Centre ...
- Weighing the Risks and Benefits of Antidepressants...
- Optic Nerve Head Drusen: The Relationship Between ...
- Intraventricular vein thrombosis in a patient with...
- Nurturing Neurosurgery with basics and compassion ...
- Therapeutic plasma exchange in a patient of myasth...
- Founders of Indian Neurosciences: Professor Bimal ...
- Lessons learnt from accidental spillage of glue be...
- “Against the tide, nothing to hide”- the saga of a...
- Advanced magnetic resonance imaging in the diagnos...
- Small vessel CNS vasculitis-optimism and challenge...
- The cover page
- Central nervous system vasculitis imaging: Simplified
- A longitudinal study of retinal nerve fibre layer ...
- Cardiomyopathy in acromegaly and the effect of tra...
- Unexpected cause of leg pain in a patient with low...
- Echocardiographic improvements following transsphe...
- Dorsolumbar fungal (aspergillus) epidural granulom...
- Demonstration of autonomic dysfunction in traumati...
- Spinal model for teaching and training
- Assessment of autonomic dysfunction in traumatic b...
-
▼
Νοε 10
(340)
- ► Σεπτεμβρίου (7549)
- ► Φεβρουαρίου (10753)
- ► Ιανουαρίου (10529)
-
►
2016
(16402)
- ► Δεκεμβρίου (7478)
- ► Φεβρουαρίου (900)
- ► Ιανουαρίου (1250)
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου