FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3193002548> ?p ?o ?g. }

• W3193002548 abstract "A stroke that includes the primary visual cortex unilaterally leads to a loss of visual field (VF) representation in the hemifield contralateral to the damage. While behavioral procedures for measuring the VF, such as perimetry, may indicate that a patient cannot see in a particular area, detailed psychophysical testing often detects the ability to perform detection or discrimination of visual stimuli (blindsight). The aim of this study was to determine whether functional magnetic resonance imaging (fMRI) could be used to determine whether perimetrically blind regions of the VF were still represented in VF maps reconstructed on the basis of visually evoked neural activity.Thirteen patients with hemianopia and nine control participants were scanned using 3T MRI while presented with visual stimulation. Two runs of a dynamic wedge and ring mapping stimulus, totaling approximately 10 min, were performed while participants fixated centrally. Two different analysis approaches were taken: the conventional population receptive field (pRF) analysis and micro-probing (MP). The latter is a variant of the former that makes fewer assumptions when modeling the visually evoked neural activity. Both methods were used to reconstruct the VF by projecting modeled activity back onto the VF. Following a normalization step, these coverage maps can be compared to the VF sensitivity plots obtained using perimetry.While both fMRI-based approaches revealed regions of neural activity within the perimetrically blind sections of the VF, the MP approach uncovered more voxels in the lesioned hemisphere in which a modest degree of visual sensitivity was retained. Furthermore, MP-based analysis indicated that both early (V1/V2) and extrastriate visual areas contributed equally to the retained sensitivity in both patients and controls.In hemianopic patients, fMRI-based approaches for reconstructing the VF can pick up activity in perimetrically blind regions of the VF. Such regions of the VF may be particularly amenable for rehabilitation to regain visual function. Compared to conventional pRF modeling, MP reveals more voxels with retained visual sensitivity, suggesting it is a more sensitive approach for VF reconstruction." @default.
• W3193002548 created "2021-08-16" @default.
• W3193002548 creator A5022564294 @default.
• W3193002548 creator A5031721421 @default.
• W3193002548 creator A5055183223 @default.
• W3193002548 creator A5061637146 @default.
• W3193002548 creator A5091847514 @default.
• W3193002548 date "2021-08-10" @default.
• W3193002548 modified "2023-09-25" @default.
• W3193002548 title "Visual Field Reconstruction in Hemianopia Using fMRI Based Mapping Techniques" @default.
• W3193002548 cites W1782200757 @default.
• W3193002548 cites W1963964477 @default.
• W3193002548 cites W1995405548 @default.
• W3193002548 cites W1995776677 @default.
• W3193002548 cites W2024158078 @default.
• W3193002548 cites W2035956821 @default.
• W3193002548 cites W2046877125 @default.
• W3193002548 cites W2048675377 @default.
• W3193002548 cites W2056834567 @default.
• W3193002548 cites W2059329002 @default.
• W3193002548 cites W2065193615 @default.
• W3193002548 cites W2094764749 @default.
• W3193002548 cites W2096448085 @default.
• W3193002548 cites W2096512217 @default.
• W3193002548 cites W2112424371 @default.
• W3193002548 cites W2113592600 @default.
• W3193002548 cites W2119117056 @default.
• W3193002548 cites W2124626867 @default.
• W3193002548 cites W2127890285 @default.
• W3193002548 cites W2136344857 @default.
• W3193002548 cites W2139280753 @default.
• W3193002548 cites W2144357320 @default.
• W3193002548 cites W2149067367 @default.
• W3193002548 cites W2151162665 @default.
• W3193002548 cites W2151721316 @default.
• W3193002548 cites W2154317120 @default.
• W3193002548 cites W2158564386 @default.
• W3193002548 cites W2345281135 @default.
• W3193002548 cites W2588921996 @default.
• W3193002548 cites W2684333156 @default.
• W3193002548 cites W2754675111 @default.
• W3193002548 cites W2775036198 @default.
• W3193002548 cites W2782449813 @default.
• W3193002548 cites W2785894443 @default.
• W3193002548 cites W2808689049 @default.
• W3193002548 cites W2810783964 @default.
• W3193002548 cites W2883291765 @default.
• W3193002548 cites W2883325371 @default.
• W3193002548 cites W2898600636 @default.
• W3193002548 cites W2907880177 @default.
• W3193002548 cites W2917619486 @default.
• W3193002548 cites W2967165524 @default.
• W3193002548 cites W2967780033 @default.
• W3193002548 cites W2972296829 @default.
• W3193002548 cites W2991873840 @default.
• W3193002548 cites W3006595688 @default.
• W3193002548 cites W3008511728 @default.
• W3193002548 cites W3049318942 @default.
• W3193002548 cites W3080508117 @default.
• W3193002548 cites W3112488639 @default.
• W3193002548 cites W3118993900 @default.
• W3193002548 cites W3165201173 @default.
• W3193002548 cites W4233487530 @default.
• W3193002548 cites W4235069874 @default.
• W3193002548 cites W4239406485 @default.
• W3193002548 cites W803182649 @default.
• W3193002548 cites W888070538 @default.
• W3193002548 doi "https://doi.org/10.3389/fnhum.2021.713114" @default.
• W3193002548 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8382851" @default.
• W3193002548 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34447301" @default.
• W3193002548 hasPublicationYear "2021" @default.
• W3193002548 type Work @default.
• W3193002548 sameAs 3193002548 @default.
• W3193002548 citedByCount "1" @default.
• W3193002548 countsByYear W31930025482022 @default.
• W3193002548 crossrefType "journal-article" @default.
• W3193002548 hasAuthorship W3193002548A5022564294 @default.
• W3193002548 hasAuthorship W3193002548A5031721421 @default.
• W3193002548 hasAuthorship W3193002548A5055183223 @default.
• W3193002548 hasAuthorship W3193002548A5061637146 @default.
• W3193002548 hasAuthorship W3193002548A5091847514 @default.
• W3193002548 hasBestOaLocation W31930025481 @default.
• W3193002548 hasConcept C154945302 @default.
• W3193002548 hasConcept C15744967 @default.
• W3193002548 hasConcept C169760540 @default.
• W3193002548 hasConcept C180747234 @default.
• W3193002548 hasConcept C19071747 @default.
• W3193002548 hasConcept C2776058522 @default.
• W3193002548 hasConcept C2779226451 @default.
• W3193002548 hasConcept C2779345533 @default.
• W3193002548 hasConcept C2779918689 @default.
• W3193002548 hasConcept C2908647359 @default.
• W3193002548 hasConcept C41008148 @default.
• W3193002548 hasConcept C54170458 @default.
• W3193002548 hasConcept C71924100 @default.
• W3193002548 hasConcept C99454951 @default.
• W3193002548 hasConceptScore W3193002548C154945302 @default.
• W3193002548 hasConceptScore W3193002548C15744967 @default.
• W3193002548 hasConceptScore W3193002548C169760540 @default.
• W3193002548 hasConceptScore W3193002548C180747234 @default.

• next