Localization of diaphragm motor cortical representation and determination of corticodiaphragmatic latencies by using magnetic stimulation in normal adult human subjects

2001 ◽  
Vol 85 (6) ◽  
pp. 560-566 ◽  
Author(s):  
E. Khedr ◽  
M. Trakhan
1949 ◽  
Vol 159 (1) ◽  
pp. 29-32 ◽  
Author(s):  
Norman P. Goldstein ◽  
Benjamin W. Smith ◽  
Jerome H. Epstein ◽  
Joseph H. Roe

1980 ◽  
Vol 49 (3) ◽  
pp. 438-443 ◽  
Author(s):  
T. N. Hansen ◽  
Y. Sonoda ◽  
M. B. McIlroy

The resistance to the flow of oxygen, nitrogen, and carbon dioxide through the skin ws measured in three normal adult human subjects. A sampling chamber 2.5 cm in diameter, heated to 43-44 degrees C, was applied to the skin of the forearm and gas sampled with a mass spectrometer at a rate of about 10(-5) ml . s-1 through membranes of different resistance. Skin resistance was calculated from the results of sequential studies with different membranes of known resistance on the sampling chamber. The resistance to oxygen flow (1.79 +/- 0.92 X 10(3) atm . ml-1 . min . cm2) was 1/5 of that for nitrogen and 28.5 times that for carbon dioxide. The response time of the skin to a sudden change in arterial gas tension was investigated by having the subjects rebreathe 5% carbon dioxide in oxygen and then breathe air. The mean transit times though the skin for oxygen and carbon dioxide were similar (approx 30 s) and about twice those for nitrogen. The finding of similar response times for oxygen and carbon dioxide transfer in the face of large differences in resistance suggests that there is a high capacitance for carbon dioxide in the skin, presumably due to its high solubility and the effects of buffering.


2020 ◽  
Author(s):  
Ines Merida ◽  
Julien Jung ◽  
Sandrine Bouvard ◽  
Didier Le Bars ◽  
Sophie Lancelot ◽  
...  

We present a database of cerebral PET FDG and anatomical MRI for 37 normal adult human subjects (CERMEP-IDB-MRXFDG). Thirty-nine participants underwent [18F]FDG PET/CT and MRI, resulting in [18F]FDG PET, T1 MPRAGE MRI, FLAIR MRI, and CT images. Two participants were excluded after visual quality control. We describe the acquisition parameters, the image processing pipeline and provide participants' individual demographics (mean age 38 ± 11.5 years, range 23-65, 20 women). Volumetric analysis of the 37 T1 MRIs showed results in line with the literature. A leave-one-out assessment of the 37 FDG images using Statistical Parametric Mapping (SPM) yielded a low number of false positives after exclusion of artefacts. The database is stored in three different formats, following the BIDS common specification: 1) DICOM (data not processed), 2) NIFTI (multimodal images coregistered to PET subject space), 3) NIFTI normalized (images normalized to MNI space). Bona fide researchers can request access to the database via a short form.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inés Mérida ◽  
Julien Jung ◽  
Sandrine Bouvard ◽  
Didier Le Bars ◽  
Sophie Lancelot ◽  
...  

AbstractWe present a database of cerebral PET FDG and anatomical MRI for 37 normal adult human subjects (CERMEP-IDB-MRXFDG). Thirty-nine participants underwent static [18F]FDG PET/CT and MRI, resulting in [18F]FDG PET, T1 MPRAGE MRI, FLAIR MRI, and CT images. Two participants were excluded after visual quality control. We describe the acquisition parameters, the image processing pipeline and provide participants’ individual demographics (mean age 38 ± 11.5 years, range 23–65, 20 women). Volumetric analysis of the 37 T1 MRIs showed results in line with the literature. A leave-one-out assessment of the 37 FDG images using Statistical Parametric Mapping (SPM) yielded a low number of false positives after exclusion of artefacts. The database is stored in three different formats, following the BIDS common specification: (1) DICOM (data not processed), (2) NIFTI (multimodal images coregistered to PET subject space), (3) NIFTI normalized (images normalized to MNI space). Bona fide researchers can request access to the database via a short form.


2021 ◽  
Vol 15 ◽  
Author(s):  
Rachel E. Sondergaard ◽  
Davide Martino ◽  
Zelma H. T. Kiss ◽  
Elizabeth G. Condliffe

Motor cortical representation can be probed non-invasively using a transcranial magnetic stimulation (TMS) technique known as motor mapping. The mapping technique can influence features of the maps because of several controllable elements. Here we review the literature on six key motor mapping parameters, as well as their influence on outcome measures and discuss factors impacting their selection. 132 of 1,587 distinct records were examined in detail and synthesized to form the basis of our review. A summary of mapping parameters, their impact on outcome measures and feasibility considerations are reported to support the design and interpretation of TMS mapping studies.


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