Threshold potentialIn electrophysiology, the threshold potential is the critical level to which a membrane potential must be depolarized to initiate an action potential. In neuroscience, threshold potentials are necessary to regulate and propagate signaling in both the central nervous system (CNS) and the peripheral nervous system (PNS). Most often, the threshold potential is a membrane potential value between –50 and –55 mV, but can vary based upon several factors.
AddictionAddiction is generally a neuropsychological disorder defining pervasive and intense urge to engage in maladaptive behaviors providing immediate sensory rewards (e.g. consuming drugs, excessively gambling), despite their harmful consequences. Dependence is generally an addiction that can involve withdrawal issues. Addictive disorder is a category of mental disorders defining important intensities of addictions or dependences, which induce functional disabilities. There are no agreed definitions on these terms – see section on 'definitions'.
IslamophobiaIslamophobia is the fear of, hatred of, or prejudice against the religion of Islam or Muslims in general, especially when seen as a geopolitical force or a source of terrorism. The scope and precise definition of the term Islamophobia, is the subject of debate. Some scholars consider it to be a form of xenophobia or racism, some consider Islamophobia and racism to be closely related or partially overlapping phenomena, while others dispute any relationship; primarily on the grounds that religion is not a race.
TriodeA triode is an electronic amplifying vacuum tube (or thermionic valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Developed from Lee De Forest's 1906 Audion, a partial vacuum tube that added a grid electrode to the thermionic diode (Fleming valve), the triode was the first practical electronic amplifier and the ancestor of other types of vacuum tubes such as the tetrode and pentode.
Ku Klux KlanThe Ku Klux Klan (ˌkuː_klʌks_ˈklæn,_ˌkjuː-), commonly shortened to the KKK or the Klan is the name of several historical and current American white supremacist, far right-wing terrorist, and hate groups. Their primary targets are African Americans, Hispanics, Jews, Latinos, Asian Americans, Native Americans, and Catholics, as well as immigrants, leftists, homosexuals, Muslims, atheists, and abortion providers. Three separate Klans have existed in three non-overlapping time periods.
