scholarly journals Relation between palm and finger cortical representations in primary somatosensory cortex: A 7T fMRI study

2021 ◽  
Vol 42 (7) ◽  
pp. 2262-2277
Author(s):  
Michel Akselrod ◽  
Roberto Martuzzi ◽  
Wietske Zwaag ◽  
Olaf Blanke ◽  
Andrea Serino
Keyword(s):  
Somatosensory Cortex ◽  
Primary Somatosensory Cortex ◽  
Fmri Study ◽  
Cortical Representations ◽  
7T Fmri

scholarly journals Anatomical and functional properties of the foot and leg representation in areas 3b, 1 and 2 of primary somatosensory cortex in humans: A 7T fMRI study

NeuroImage ◽  
2017 ◽  
Vol 159 ◽  
pp. 473-487 ◽  
Author(s):  
Michel Akselrod ◽  
Roberto Martuzzi ◽  
Andrea Serino ◽  
Wietske van der Zwaag ◽  
Roger Gassert ◽  
...  
Keyword(s):  
Somatosensory Cortex ◽  
Functional Properties ◽  
Primary Somatosensory Cortex ◽  
Fmri Study ◽  
7T Fmri

scholarly journals Somatotopic Representation of Acupoints in Human Primary Somatosensory Cortex: An fMRI Study

2005 ◽  
Vol 4 (4) ◽  
pp. 187-189 ◽  
Author(s):  
Asuka NAKAGOSHI ◽  
Masaki FUKUNAGA ◽  
Masahiro UMEDA ◽  
Yuki MORI ◽  
Toshihiro HIGUCHI ◽  
...  
Keyword(s):  
Somatosensory Cortex ◽  
Primary Somatosensory Cortex ◽  
Fmri Study

scholarly journals Judging roughness by sight-A 7-tesla fMRI study on responsivity of the primary somatosensory cortex during observed touch of self and others

2012 ◽  
Vol 34 (8) ◽  
pp. 1882-1895 ◽  
Author(s):  
Esther Kuehn ◽  
Robert Trampel ◽  
Karsten Mueller ◽  
Robert Turner ◽  
Simone Schütz-Bosbach
Keyword(s):  
Somatosensory Cortex ◽  
Primary Somatosensory Cortex ◽  
7 Tesla ◽  
Fmri Study

Representational overlap of adjacent fingers in multiple areas of human primary somatosensory cortex depends on electrical stimulus intensity: an fMRI study

2001 ◽  
Vol 899 (1-2) ◽  
pp. 36-46 ◽  
Author(s):  
Thomas Krause ◽  
Ralf Kurth ◽  
Jan Ruben ◽  
Jessica Schwiemann ◽  
Kersten Villringer ◽  
...  
Keyword(s):  
Somatosensory Cortex ◽  
Stimulus Intensity ◽  
Electrical Stimulus ◽  
Primary Somatosensory Cortex ◽  
Fmri Study

scholarly journals Palm-to-finger cortical functional interactions in primary somatosensory cortex: a 7T fMRI study

2020 ◽  
Author(s):  
Michel Akselrod ◽  
Roberto Martuzzi ◽  
Wietske van der Zwaag ◽  
Olaf Blanke ◽  
Andrea Serino
Keyword(s):  
Somatosensory Cortex ◽  
Resting State ◽  
Primary Somatosensory Cortex ◽  
Spatial Proximity ◽  
Single Subject ◽  
Functional Interactions ◽  
Somatotopic Organization ◽  
Pattern Similarity ◽  
Resting State Connectivity ◽  
7T Fmri

ABSTRACTMany studies focused on the cortical representations of fingers, while the palm is relatively neglected despite its importance for hand function. Here, we investigated palm representation (PR) and its interactions with finger representations (FRs) in primary somatosensory cortex (S1). Few studies in humans suggested that PR is located medially with respect to FRs in S1, yet to date, no study directly quantified the somatotopic organization of PR and the five FRs. Importantly, the relationship between the somatotopic organization and the cortical functional interactions between PR and FRs remains largely unexplored. Using 7T fMRI, we mapped PR and the five FRs at the single subject level. First, we analyzed the cortical distance between PR and FRs to determine their somatotopic organization. Results show that the PR was located medially with respect to D5. Second, we tested whether the observed cortical distances would predict palm-finger functional interactions. Using three complementary measures of functional interactions (co-activations, pattern similarity and resting-state connectivity), we show that palm-finger functional interactions were not determined by their somatotopic organization, that is, there was no gradient moving from D5 to D1, except for resting-state connectivity, which was predicted by the somatotopy. Instead, we show that the representational geometry of palm-finger functional interactions reflected the physical structure of the hand. 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 sensory space (e.g. the hand shape) better predicts the observed functional interactions.

Contralateral and ipsilateral responses in primary somatosensory cortex following electrical median nerve stimulation—an fMRI study

2005 ◽  
Vol 116 (4) ◽  
pp. 842-848 ◽  
Author(s):  
Takashi Nihashi ◽  
Shinji Naganawa ◽  
Chiho Sato ◽  
Hisashi Kawai ◽  
Tatsuya Nakamura ◽  
...  
Keyword(s):  
Median Nerve ◽  
Somatosensory Cortex ◽  
Nerve Stimulation ◽  
Primary Somatosensory Cortex ◽  
Median Nerve Stimulation ◽  
Fmri Study

An integrative MEG–fMRI study of the primary somatosensory cortex using cross-modal correspondence analysis

NeuroImage ◽  
2004 ◽  
Vol 22 (1) ◽  
pp. 120-133 ◽  
Author(s):  
Matthias Schulz ◽  
Wilkin Chau ◽  
Simon J. Graham ◽  
Anthony R. McIntosh ◽  
Bernhard Ross ◽  
...  
Keyword(s):  
Somatosensory Cortex ◽  
Correspondence Analysis ◽  
Primary Somatosensory Cortex ◽  
Fmri Study
Sign in / Sign up

Export Citation Format

Share Document