Somatosensory-evoked potentials (SEPs) and EEG were recorded in 45 patients with lacunar syndrome due to CT-verified lacunar infarcts. Abnormalities of SEP chronological parameters were observed in 22 subjects. SEP changes occurred independently of clinical features and were related more to the lesion location than to its size.

Download full-text PDF

Source
http://dx.doi.org/10.1159/000116467DOI Listing

Publication Analysis

Top Keywords

somatosensory-evoked potentials
8
potentials diagnosis
4
diagnosis lacunar
4
lacunar syndromes
4
syndromes comparison
4
comparison eeg
4
eeg findings
4
findings somatosensory-evoked
4
potentials seps
4
seps eeg
4

Similar Publications

The neural correlates of conscious somatosensory perception are usually investigated using threshold detection tasks. However, it is largely unclear how other aspects of conscious somatosensory experience, such as localization, discrimination, and identification, are processed in the brain. Here, we go beyond mere stimulus detection and analyze the EEG data of 34 participants to investigate the event-related potential correlates of somatosensory experience in a temporal discrimination task.

View Article and Find Full Text PDF

Tumors infiltrating the precentral gyrus remain a unique operative challenge. In this study, we explored a novel approach for awake craniotomy involving a patient playing a drum pad during resection of low-grade glioma, with the use of preoperative navigated transcranial magnetic stimulation (nTMS)-generated diffusion tensor imaging (DTI) and high-density real-time electrocorticography (ECoG). A 36-year-old left-handed male with a low-grade glioma in the left hemisphere hand knob region had a grand mal seizure.

View Article and Find Full Text PDF

Sensory feedback is of vital importance in motor control, yet is rarely studied in diseases which frequently result in motor deficiency, such as hemiparetic stroke. This study employs the laterality index (LI) of somatosensory evoked potentials (SEPs) to investigate whether sensory feedback is altered in hemiparetic stroke during movements of the paretic arm, with a hemispheric shift from the lesioned hemisphere toward contralesional hemisphere. Through experimental design involving the isometric lifting of the paretic arms during tactile finger stimulation and the analysis of LI in SEPs P50 and N100, we found: 1) increased contralesional sensory activity in stroke participants when they are receiving sensory input in their paretic hand for both P50 and N100 and 2) the contralesional N100 activity is enhanced when stroke participants are performing an isometric arm lifting task.

View Article and Find Full Text PDF

Brain-computer interface (BCI) is emerging as an effective complementary solution in the field of rehabilitation for the interaction between patients and robotic assistive devices. Specifically, the somatosensory event-related potentials (ERP) BCI has unique advantage for post-stroke motor rehabilitation scenarios and has been proven feasible on healthy subjects. We conducted the first patient-involved somatosensory ERP-BCI experiment with electric stimulation to evaluate its feasibility for real-world clinical usage.

View Article and Find Full Text PDF

In recent years, somatosensory evoked high-frequency oscillations (SEP-HFO) have demonstrated the potential to indicate arousal levels in both animals and humans. Nevertheless, it remains unclear how SEP-HFOs evolve in the long term after the electrical stimulation. We recorded extended evoked response potentials (EERP) in rats under anesthesia, which allows us to record an extended period of SEP until one second after stimulation.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!