| 1. |
- Stålberg, Stefan, et al.
(författare)
-
Analysis of electromyographic activity
- 2004
-
Ingår i: Clinical Neurophysiology of Disorders of Muscle and Neuromuscular Junction, including fatigue. - : Elsevier Science B.V. (Ed: E Stålberg).
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 2. |
|
|
| 3. |
- Engström, Mats, et al.
(författare)
-
Electroneurographic facial muscle pattern in Bell's palsy.
- 2000
-
Ingår i: Otolaryngology and head and neck surgery. - 0194-5998 .- 1097-6817. ; 122:2, s. 290-297
-
Tidskriftsartikel (refereegranskat)abstract
- To study the electroneurographic facial muscle pattern in Bell's palsy over time, electroneurographic recordings in the frontalis, orbicularis oculi, nasalis, and mentalis muscle regions were performed early (mean, day 11) and 1 and 3 months after the onset of the condition in 30 consecutive patients. The correlation between facial muscle electroneurographic recordings over time was also calculated. An additional aim was to assess whether further prognostic information could be obtained by electroneurographic recordings in more than one facial region. The recovery pattern was similar in all 4 facial regions. Initially, the correlation between the facial recordings was weak (r = 0.20-0.27), but it was improved at follow-up examinations (r = 0.33-0.65). Favorable outcome in 23 of 24 patients (96%) could have been predicted by the initial nasalis and/or mentalis recordings. The gap between patients with favorable outcome and patients with unfavorable outcome increased when the average electroneurography values were calculated from 1, 2, and 4 muscle recordings (4%, 8%, and 15%, respectively). Our results indicate that in Bell's palsy, electroneurographic examination of more than one facial muscle region may add prognostic information and that the degree of degeneration is initially different in the nerve branches.
|
|
| 4. |
- Erdem, Hacer, et al.
(författare)
-
Aphasia in multiple sclerosis
- 2001
-
Ingår i: Upsala J Med Sci. ; 106, s. 205-
-
Tidskriftsartikel (refereegranskat)
|
|
| 5. |
|
|
| 6. |
- Hammarberg (Hansson), Björn, et al.
(författare)
-
Novel ideas for fast muscle action potential simulations using the line source model
- 2004
-
Ingår i: IEEE Transactions on Biomedical Engineering. - 0018-9294 .- 1558-2531. ; 51:11, s. 1888-1897
-
Tidskriftsartikel (refereegranskat)abstract
- Using a signal processing approach, we analyze the line source model for muscle action potential (AP) modeling. We show that the original model presents a tradeoff between violating the Nyquist criterion on one hand and using a discretization frequency that is unnecessarily high with respect to the bandwidth of the generated AP on the other. Here, we present an improved line source model that, compared to the original, allows a lower discretization frequency while retaining the accuracy by simply introducing a continuous-time anti-aliasing filter. Moreover, a transfer function form of the transmembrane current is presented that promote the use of sophisticated signal processing methods on these type of signals. Both continuous-time and discrete-time models are presented. We also address and analyze the implications of the finite length of the muscle fibers. Including this in the model is straightforward, owing to the convolutional form of the line source model, and is manifested by a simple transformation of the associated weighting function. AP modeling is discussed for the three different electrode models: the concentric needle electrode, the single fiber electrode, and the macro electrode. The presented model is suitable for modeling large motor units, where both accuracy and computational efficiency are important factors. To simplify the selection of the discretization interval, we derive what we call the cumulative cutoff frequency that provides an estimate of the required Nyquist frequency.
|
|
| 7. |
|
|
| 8. |
- Melberg, Atle, et al.
(författare)
-
Charcot-Marie-Tooth Disease With Cerebellar Atrophy
- 2000
-
Ingår i: Journal of Clinical Neuromuscular Disease. - 1522-0443 .- 1537-1611. ; 2:1, s. 24-26
-
Tidskriftsartikel (refereegranskat)abstract
- We report on, 1 36-year-old man of Swedish descent who had teenage onset of a progressive disorder with features of Charcot-Marie-Tooth disease (CMT) and cerebellar ataxia. Cognition was normal. The polyneuropathy was of axonal type. Magnetic resonance imaging of his brain showed cerebellar atrophy. Cerebellar atrophy and CMT has been reported in one French-Canadian family and in several Japanese families, Mental impairment was a feature of the disorder in the Japanese families. A disorder with CMT and cerebellar atrophy is rare in the western world.
|
|
| 9. |
- Nandedkar, Sanjeev D, et al.
(författare)
-
Quantitative EMG
- 2002
-
Ingår i: Electrodiagnostic Medicine. - : Hanley & Belfus INC Philadelphia. ; , s. 293-
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 10. |
- Nandedkar, S J, et al.
(författare)
-
Motor unit number index (MUNIX): a pilot study
- 2003
-
Ingår i: Motor Unit Number Estimation. - : Elsevier Science B.V. (Ed: MB Bromberg). ; , s. 133-
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
