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Within-finger maps of tactile and nociceptive input in the human parietal cortex [article]

Flavia Mancini, Martin I. Sereno, Min-Ho Lee, Giandomenico D Iannetti, Irene Tracey
2019 bioRxiv   pre-print
Therefore, we used high-field 7T functional MRI to reveal within-finger maps of nociceptive and tactile inputs in the human parietal cortex.  ...  Importantly, we discovered a within-finger map of nociceptive input, but not of tactile input, in the human intraparietal area 1 (hIP1).  ...  Introduction 49 Human parietal areas contain topographic representations of innocuous somatosensory 58 In particular, each of the four cytoarchitectonic areas (3a, 3b, 1, and 2) within the primary  ... 
doi:10.1101/599167 fatcat:dpw57aolhjca5ckl25ceyoe26y

Individual fMRI maps of all phalanges and digit bases of all fingers in human primary somatosensory cortex

Meike A. Schweisfurth, Jens Frahm, Renate Schweizer
2014 Frontiers in Human Neuroscience  
This study determined the individual maps of all fingers in Brodmann area 3b of the human primary somatosensory cortex in a single fMRI session by tactile stimulation at 19 sites across all phalanges and  ...  Within D5 (and in a trend: D4), an ordered p1-to-p3 succession was found across subjects, pointing to a consistent intra-digit somatotopy for D5, with p3 generally found medial-posterior to p1.  ...  The reported inter-individual map variations within some but not all digits correspond to the general context of individual variability of representational maps in the somatosensory cortex.  ... 
doi:10.3389/fnhum.2014.00658 pmid:25228867 pmcid:PMC4151507 fatcat:df4knlafvzdb5pqxeroofz7yiq

Disinhibition of Human Primary Somatosensory Cortex After Median Nerve Transection and Reinnervation

Per F. Nordmark, Roland S. Johansson
2020 Frontiers in Human Neuroscience  
The hand representation of their contralesional (right) primary somatosensory cortex (S1) showed greater activity compared to controls when the left reinnervated index finger was used, but also when the  ...  little finger of either hand.  ...  ) but also in ordinarily innervated cutaneous areas both within the same hand (left little finger stimulation) and within the ipsilateral hand (right index and little finger stimulation).  ... 
doi:10.3389/fnhum.2020.00166 pmid:32499687 pmcid:PMC7242759 fatcat:lro66nbthvarrjden7k7sltslu

Revealing the neural fingerprints of a missing hand

Sanne Kikkert, James Kolasinski, Saad Jbabdi, Irene Tracey, Christian F Beckmann, Heidi Johansen-Berg, Tamar R Makin
2016 eLife  
We show that representation of the missing hand's individual fingers persists in the primary somatosensory cortex even decades after arm amputation.  ...  The hand area of the primary somatosensory cortex contains detailed finger topography, thought to be shaped and maintained by daily life experience.  ...  We show that representation 23 of the missing hand's individual fingers persists in the primary somatosensory cortex 24 even decades after arm amputation.  ... 
doi:10.7554/elife.15292 pmid:27552053 pmcid:PMC5040556 fatcat:cnmaoam2qrayngnxrg5agigpum

A Mechanistic Link from GABA to Cortical Architecture and Perception

James Kolasinski, John P. Logan, Emily L. Hinson, Daniel Manners, Amir P. Divanbeighi Zand, Tamar R. Makin, Uzay E. Emir, Charlotte J. Stagg
2017 Current Biology  
Graphical Abstract Highlights d GABAergic tone correlates with perceptual acuity in the human somatosensory system d This relationship is mediated by the tuning of activity in somatosensory cortex d We  ...  explain perceptual acuity via the underlying cellular and metabolic processes  ...  , using human somatosensory cortex as a model.  ... 
doi:10.1016/j.cub.2017.04.055 pmid:28552355 pmcid:PMC5462622 fatcat:uuvavdjacjcular46o4cjtyptq

Palm-to-finger cortical functional interactions in primary somatosensory cortex: a 7T fMRI study [article]

Michel Akselrod, Roberto Martuzzi, Wietske van der Zwaag, Olaf Blanke, Andrea Serino
2020 bioRxiv   pre-print
Here, we investigated palm representation (PR) and its interactions with finger representations (FRs) in primary somatosensory cortex (S1).  ...  Collectively, our findings suggest that the spatial proximity between topographically organized neuronal populations do not necessarily predicts their functional interactions, rather the structure of the  ...  Functional MRI indicates consistent intra-digit 9 topographic maps in the little but not the index finger within the human primary somatosensory cortex as revealed by high-resolution functional MRI of  ... 
doi:10.1101/2020.09.07.286062 fatcat:r5wldoqhz5b6rlcy3n7opiiwru

Finger representation in the cortex of the congenitally blind [article]

Daan B Wesselink, Sanne Kikkert, Holly Bridge, Tamar R Makin
2021 bioRxiv   pre-print
Hand representation in the primary somatosensory cortex (S1) is thought to be shaped by experience.  ...  Unlike sighted controls, anophthalmic individuals activated the left human middle temporal complex (hMT+) during finger movement.  ...  For the purpose of Open Access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript (AAM) version arising from this submission. The  ... 
doi:10.1101/2021.03.16.435392 fatcat:blovwvyzgffnvdeadqs3pbf37u

Finger somatotopy is preserved after tetraplegia but deteriorates over time [article]

Sanne Kikkert, Dario Pfyffer, Michaela Verling, Patrick Freund, Nicole Wenderoth
2021 bioRxiv   pre-print
We used functional MRI and an (attempted) finger movement task to characterise the somatotopic hand layout in the primary somatosensory cortex and structural MRI to assess spared spinal tissue bridges.  ...  However, a correlational analysis revealed that over years since SCI the hand representation typicality in primary somatosensory cortex deteriorates.  ...  Acknowledgements We thank our participants for taking part in the study.  ... 
doi:10.1101/2021.02.08.430185 fatcat:pk6jthtxdfgolnpe5f3ob7vhqm

Variability and asymmetry in the human precentral motor system: A cytoarchitectonic and myeloarchitectonic brain mapping study

J. Rademacher
2001 Brain  
The morphology of the region of the primary motor cortex in the human brain is variable, and putative asymmetries between the hemispheres have been noted since the beginning of last century.  ...  Topography and variability in the localization of architectonic borders were analysed and mapped to a computerized spatial reference system, which consists of an individual in vivo MRI brain.  ...  This 'Human Brain Project' research was funded jointly by the National Institute of Mental Health, National Institute of Neurological Disorders and Stroke, National Institute on Drug Abuse and the National  ... 
doi:10.1093/brain/124.11.2232 pmid:11673325 fatcat:ig7smmh6anhspovjxsz4kdxlxi

Human Brain Anatomy: Prospective, Microgravity, Hemispheric Brain Specialisation and Death of a Person [chapter]

Zamzuri Idris, Faruque Reza, Jafri Malin Abdullah
2017 Human Anatomy - Reviews and Medical Advances  
This indicates central nervous system always need microgravity environ ment to function optimally.  ...  The results disclosed silent word and picture naming were bilaterally represented, but stronger responses were in the left frontal lobe and in the right parietotemporal lobes respectively.  ...  Acknowledgements The content of this chapter is partially obtained from study data using short-term grant (ref: 304/ PPSP/61312142 from Universiti Sains Malaysia (USM)) and is approved by Human Research  ... 
doi:10.5772/67897 fatcat:7htspf6lrvgkpf52amgg3rroza

Imaging

John C. Mazziotta
2000 Archives of Neurology  
The development of probabilistic atlases will soon provide a means of understanding normal variants of human brain structure and function and studying brain disorders and their treatment in an objective  ...  This brief review focuses on methods that are just entering the clinical experience or are now being explored in a research setting but have the imminent potential for clinical use.  ...  Distances between median nerve somatosensory evoked potential (SSEP) and individual-digit dipoles were 9, 6, and 5 mm for thumb (green), index finger (red), and middle finger (purple), respectively.  ... 
doi:10.1001/archneur.57.10.1413 pmid:11030792 fatcat:b6etfkilubhaxdgk65qfsn6jsq

Proceedings of the Fourth International Workshop on Advances in Electrocorticography

Anthony Ritaccio, Peter Brunner, Nathan E. Crone, Aysegul Gunduz, Lawrence J. Hirsch, Nancy Kanwisher, Brian Litt, Kai Miller, Daniel Moran, Josef Parvizi, Nick Ramsey, Thomas J. Richner (+3 others)
2013 Epilepsy & Behavior  
Presentations covered a broad range of topics, including innovations in passive functional mapping, increased understanding of pathologic high-frequency oscillations, evolving sensor technologies, a human  ...  The Fourth International Workshop on Advances in Electrocorticography (ECoG) convened in New Orleans, LA, on October 11-12, 2012.  ...  We also examined the spatial pattern of activity associated with movement of separate fingers (thumb, index, and little fingers).  ... 
doi:10.1016/j.yebeh.2013.08.012 pmid:24034899 pmcid:PMC3896917 fatcat:mg52e6mrlbff3n2d2qjv5vnwxq

Proceedings: ISBET 200 – 14th World Congress of the International Society for Brain Electromagnetic Topography, November 19-23, 2003

Yoshio Okada
2003 Brain Topography  
We prefer not to use an exact orientation constraint at each source space point, as given by the cortical tessellation, but rather allow some "looseness" in the orientations to account for variation of  ...  In addition, the source space may be constrained using structural and/or functional MRI. Lastly, data may be in the time, frequency, or time-frequency domains.  ...  The topographical distribution of FR activity within epileptogenic tissue is not homogeneous, but, rather, discretely localized within small neuronal clusters imbedded within hippocampal and parahippocampal  ... 
doi:10.1023/b:brat.0000019284.29068.8d fatcat:tpvp3dcojrczjkuzcu3xefyizy

The utility of Magnetoencephalography in Multiple Sclerosis - a Systematic Review

H. Khan, M.B. Sami, V. Litvak
2021 NeuroImage: Clinical  
Specific replicated findings were decreased motor induced responses in the beta band, diminished increase of gamma power after visual stimulation, increased latency and reduced connectivity for somatosensory  ...  At this stage, it is not clear whether these changes are specific to Multiple Sclerosis or are also observable in other diseases.  ...  30 s; P60: positive deflection at 60 s; S1: primary somatosensory cortex; ICC: intra-cortical connectivity; M20: somatosensory evoked field analysis on the 20-ms interval following the arrival of sensory  ... 
doi:10.1016/j.nicl.2021.102814 pmid:34537682 pmcid:PMC8455859 fatcat:kiw5wkbfrffihobjh5odpi6ajy

Dynamic Patterns of Brain Structure–Behavior Correlation Across the Lifespan

Qolamreza R. Razlighi, Hwamee Oh, Christian Habeck, Deirdre O'Shea, Elaine Gazes, Teal Eich, David B. Parker, Seonjoo Lee, Yaakov Stern
2016 Cerebral Cortex  
Although the brain/behavior correlation is one of the premises of cognitive neuroscience, there is still no consensus about the relationship between brain measures and cognitive function, and only little  ...  Specifically, the present study provides evidence that distinct cognitive domains are associated with unique structural patterns in three adulthood periods: Early, middle, and late adulthood.  ...  Funding This work was supported by three different grants funding from the National Institute of Aging at the National Institutes of Health (R01 AG038465, R01 AG026158, and K01 AG044467).  ... 
doi:10.1093/cercor/bhw179 pmid:27436131 pmcid:PMC6059207 fatcat:4abnvgv6wjabze4sadmwjrscum
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