Much as information is routinely encoded in a subtle modulatory signal coexisting with a strong carrier wave in radio-communications, it is possible to experimentally dissociate the bioelectricity needed for housekeeping processes from the developmental roles of voltage patterns.
Pyrethroid insecticides are subject for review as potential developmental neurotoxicants because of their mode of action on voltage-sensitive sodium channels (Kolaczinski and Curtis 2004; Shafer et al. 2005).
About a year ago, Levin began thinking about that old work when a Tufts developmental biologist, Dany Adams, was determining voltage patterns in the embryonic frog head and observed that cells destined to become eyes had a large negative charge, suggesting a role for electricity in normal eye development.
While most of the quantitative PCR results had very strong statistical values, scatter in values was greater and the corresponding statistical significance weaker for muscle developmental gene Klf4 and the voltage gated potassium channel Kcne4.
Then the high voltage DC (HVDC) transmission system is depicted the developmental history and the system׳s structure, and the HVDC applications based on voltage-source converters (VSCs) combined with the renewable generation are introduced, such as onshore, offshore wind, and City Power Supply.
Thus, ion flows and the resulting voltage gradients are highly relevant to the understanding of cancer as a developmental disorder and to the prediction and control of neoplastic cell behaviors (Rubin, 1985; Huang et al., 2009; Levin, 2012b).
For instance, Timothy syndrome, a very rare developmental disorder characterized by autism and cardiovascular irregularities, results from a mutation in the CaV1.2 voltage-gated calcium channel.
Furthermore, developmental studies demonstrated that the loss of these synaptic signals coincides with a downregulation of voltage-gated sodium and potassium channels.
Voltage recordings (bottom traces) and corresponding timecourses of instantaneous spike frequency (top plots) are shown for the three developmental stages.
"We detected stray voltage.
