Functional Stimulation There is no reason why the large number of functional stimulation studies performed with near infrared spectroscopy should not be directly transferred to a bed-side assessment in patients suffering from neurovascular or neurodegenerative diseases. The major problem here rather is the reluctance of clinical practice to focus on functional rather than structural brain imagi...

BACKGROUND During EEG suppression with isoflurane or sevoflurane anaesthesia, median nerve stimulation causes cortical responses of two kinds: an N20 wave with a latency of 20 ms and an EEG burst with a latency of 200 ms. We tested the possibility that median nerve stimulation during EEG suppression with propofol would cause an EEG response that was consistent enough to be of use for neuromonit...

BACKGROUND Minimally invasive spine (MIS) techniques have been available for many years, but their application has been largely limited to degenerative spine diseases. There are few reports in the literature of using MIS techniques for removal of neoplasms. We report our experience using a modified MIS technique for removal of an occipital-cervical junction (OCJ) schwannoma with attention to te...

In our recent work, a novel speech synthesis with enhanced prosody (SSEP) system using probabilistic amplitude demodulation (PAD) features was introduced. These features were used to improve prosody in speech synthesis. The PAD was applied iteratively for generating syllable and stress amplitude modulations in a cascade manner. The PAD features were used as a secondary input scheme along with t...

Abstract OBJECTIVE Cortical mapping during tumor resection is critical to reducing the risk of neurological complications. While somatosensory evoked potential (SSEPs) widely employed delineate central sulcus, response can be misconstrued from manual peak interpretation. This due poor spatial resolution strip electrode as well a result edema or infiltration overlying cortex. We present real-tim...

Electrical stimulation of the digital nerves of the index finger produces changes in the EMG signal during steady voluntary contraction of the first dorsal interosseous muscle. This electrocutaneous reflex (ECR) was studied in 90 patients classified into different categories according to diagnostic criteria for multiple sclerosis. In addition, pattern reversal visual evoked responses (VER), bra...

OBJECTIVE To investigate the effects of different doses of topical dexamethasone (Dex) on sciatic nerves with simulated compressive neuropathy. METHODS Thirty-two Wistar rats were divided into four groups of 8: Sham group: no compression of the sciatic nerve + no treatment; Saline: chronic compression of the left sciatic nerve for 4 weeks + saline; 0.8% Dex: chronic compression + 0.8 mg of De...

In current clinical practice the degree of paraplegia or quadriplegia is objectively determined with transcranial magnetic stimulation (TMS) and somatosensory-evoked potentials (SSEP). We measured the MEG signal following electrical stimulation of upper and lower limbs in two normal and three clinically complete paraplegic subjects. From the MEG signal we computed distributed estimates of brain...

BACKGROUND Recently, it was reported that the application of a static magnetic field by placing a strong permanent magnet over the scalp for 10 min led to an inhibition of motor cortex excitability for at least 6 min after removing the magnet. When placing the magnet over the somatosensory cortex, a similar inhibitory after effect could be observed as well. OBJECTIVE Our aim was to replicate ...

Alien Hand Syndrome is defined as unwilled, uncontrollable, but seemingly purposeful movements of an upper limb. Two major criteria for the diagnosis are complaint of a foreign limb and complex, autonomous, involuntary motor activity that is not part of an identifiable movement disorder. After a cerebrovascular accident in the corpus callosum, the parietal, or frontal regions, various abnormal ...