Currently, the quantification of event-related EEG is usually based on power feature with the classical band power method. In this paper, the method quantifying the complexity and irregularity of event-related EEG data in relation to hand motor imagery is presented. Two groups of the complexity indexes: Kolmogorov complexity (Kc) and Fourier spectral entropy (FSE) are discussed. The event-relat...

P rime numbers are the atoms of our mathematical universe. Euclid showed that there are infinitely many primes, but the subtleties of their distribution continue to fascinate mathematicians. Letting p(n) denote the number of primes p B n, Gauss conjectured in the early nineteenth century that pðnÞ#n=lnðnÞ. In 1896, this conjecture was proven independently by Jacques Hadamard and Charles de la V...

Entity–relationship (ER) modeling is basically a technique of creating model before the detail database is formed. One the ERM or Entity Relationship Diagram (ERD) is complete and correct then it is feasible to convert into database design directly. The database design will also be complete and correct, as it is based on verified ERM and ERD. To increase the usability and understandability of E...

BACKGROUND Despite the immense literature related to diverse human electroencephalographic (EEG) parameters, very few studies have focused on the reliability of these measures. Some of the most studied components (i.e., P3 or MMN) have received more attention regarding the stability of their main parameters, such as latency, amplitude or topography. However, spectral modulations have not been a...

Activity in anterior sensorimotor regions is found in speech production and some perception tasks. Yet, how sensorimotor integration supports these functions is unclear due to a lack of data examining the timing of activity from these regions. Beta (~20 Hz) and alpha (~10 Hz) spectral power within the EEG μ rhythm are considered indices of motor and somatosensory activity, respectively. In the ...

OBJECTIVE We studied differences in the spatiotemporal dynamics of cortical oscillation across brain regions of patients with schizophrenia and normal subjects during the auditory oddball task using magnetoencephalography (MEG) and electroencephalography (EEG). METHODS Ten right-handed male schizophrenia patients were studied. We used a newly developed adaptive spatial filtering algorithm opt...

PURPOSE To compare the anatomic and functional results of 3 different epimacular dissection techniques on macular hole surgery. METHODS Vitrectomy was performed in 123 eyes for macular hole in a retrospective, consecutive case series by one surgeon. The surgical technique was identical except for the method of epimacular dissection, which was performed using 1 of 3 techniques sequentially. Th...

Individuals with severe motor impairment can use event-related desynchronization (ERD) based BCIs as assistive technology. Auto-calibrating and adaptive ERD-based BCIs that users control with motor imagery tasks ("SMR-AdBCI") have proven effective for healthy users. We aim to find an improved configuration of such an adaptive ERD-based BCI for individuals with severe motor impairment as a resul...

Previous research has reported that the perception of written language symbols activates the cortical motor hand representation of the dominant hemisphere also found to be activated during the writing of these symbols. It has been suggested that such motor activation supports reading. Nevertheless, the precise circumstances leading to such activation are still unknown. For instance, several stu...

BACKGROUND/AIMS Quality of life (QoL) is consistently decreased in gastroesophageal reflux disease (GERD), but the relationship between QoL and psychological factors in GERD has not yet been clearly defined. The present study investigated the relationship between the psychological factors of two subtypes of GERD and QoL. METHODS A cohort of 769 participants underwent upper endoscopic evaluati...