Reactive oxygen species (ROS) and electric currents modulate regeneration; however, the interplay between biochemical and biophysical signals during regeneration remains poorly understood. We investigate the interactions between redox and bioelectric activities during tail regeneration in Xenopus laevis tadpoles. We show that inhibition of NADPH oxidase-mediated production of ROS, or scavenging...

Dynamical systems and fractal theory methodologies have been proved useful for the modeling analysis of experimental datasets and, in particular, electroencephalographic signals. The computation dimension approximation curves plane enables assignment numerical values to bioelectric recordings order discriminate between different states observed system. procedure does not require stationarity si...

During the analysis of real biomedical signals it can almost always be seen noise that distorts the image. The presence of interference is associated with the specific acquisition of these signals. For example in the case of bioelectric signals, disturbances may come from the hardware retrieves those signals, the powerline or the bioelectric activity of body cells. The bioelectric signals, whic...

Since the fabrication of active electrodes has been reported and their beneficial effects scientifically confirmed, we present a CMOS bioelectric amplifier with DC rejection designed for active electrode in this paper. Analysis, design and post simulation results will be described in detail. The amplifier operating at ±0.9V supply voltage has a mid-band gain of 40dB with ±300mV dc offset reject...

Emotion produces complex neural processes and physiological changes under appropriate event stimulation. Physiological signals have the advantage of better reflecting a person’s actual emotional state than facial expressions or voice signals. An electroencephalogram (EEG) is signal obtained by collecting, amplifying, recording human brain’s weak bioelectric on scalp. The eye-tracking (E.T.) rec...

The microenvironment is increasingly recognized as a crucial aspect of cancer. In contrast and complement to the field's focus on biochemical factors and extracellular matrix, we characterize a novel aspect of host:tumor interaction - endogenous bioelectric signals among non-excitable somatic cells. Extending prior work focused on the bioelectric state of cancer cells themselves, we show for th...

The article is aimed at familiarizing medical specialists involved in registration and analysis of electroencephalographic (EEG) examinations with the basic principles operation design a modern EEG recorder. Understanding technical fundamentals behind equipment should help personnel to correctly use all its capabilities ultimately improve quality care. diagram electroencephalograph operation, t...

Complex pattern formation requires mechanisms to coordinate individual cell behavior towards the anatomical needs of the host organism. Alongside the well-studied biochemical and genetic signals functions an important and powerful system of bioelectrical communication. All cells, not just excitable nerve and muscle, utilize ion channels and pumps to drive standing gradients of ion content and t...