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Gating (other)
Gating may refer to: Neurobiology *Gating (electrophysiology), the opening (activation) or closing (deactivation) of ion channels *Sensory gating, an automatic process by which the brain adjusts to stimuli * Synaptic gating, neural circuits suppressing inputs through synapses Technology * Gating (telecommunication), a process of selectively modifying signals * Gating system metalwork, a process in casting * Gating signal, a signal that provides a time window *Clock gating, a power-saving techniques used in synchronous circuits *Power gating, a power-saving technique for circuits *Noise gate, a term in audio signal processing *Frequency-resolved optical gating, a term related to auto correlation in optics Other * Gating (punishment), a form of punishment used in educational establishments See also *Gate (other) A gate is an opening in a wall or fence fitted with a moveable barrier allowing it to be closed. Gate or GATE may also refer to: Arts, entertainment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gating (electrophysiology)
In electrophysiology, the term gating refers to the opening (activation) or closing (by deactivation or inactivation) of ion channels. This change in conformation is a response to changes in transmembrane voltage. When ion channels are in a 'closed' (non-conducting) state, they are impermeable to ions and do not conduct electrical current. When ion channels are in their open state, they conduct electrical current by allowing specific types of ions to pass through them, and thus, across the plasma membrane of the cell. Gating is the process by which an ion channel transitions between its open and closed states. A variety of cellular changes can trigger gating, depending on the ion channel, including changes in voltage across the cell membrane (voltage-gated ion channels), chemicals interacting with the ion channel (ligand-gated ion channels), changes in temperature, stretching or deformation of the cell membrane, addition of a phosphate group to the ion channel (phosphorylation), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensory Gating
Sensory gating describes neural processes of filtering out redundant or irrelevant stimuli from all possible environmental stimuli reaching the brain. Also referred to as gating or filtering, sensory gating prevents an overload of information in the higher cortical centers of the brain. Sensory gating can also occur in different forms through changes in both perception and sensation, affected by various factors such as "arousal, recent stimulus exposure, and selective attention. Although sensory gating is largely automatic, it also occurs within the context of attention processing as the brain selectively seeks for goal-relevant information. Previous studies have shown a correlation between sensory gating and different cognitive functions, but there is not yet a solid evidence implying that the relationship between sensory gating and cognitive functions are modality-independent. Cocktail party effect The cocktail party effect illustrates how the brain inhibits input from environme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synaptic Gating
Synaptic gating is the ability of neural circuits to gate inputs by either suppressing or facilitating specific synaptic activity. Selective inhibition of certain synapses has been studied thoroughly (see Gate theory of pain), and recent studies have supported the existence of permissively gated synaptic transmission. In general, synaptic gating involves a mechanism of central control over neuronal output. It includes a sort of gatekeeper neuron, which has the ability to influence transmission of information to selected targets independently of the parts of the synapse upon which it exerts its action (see also neuromodulation). Bistable neurons have the ability to oscillate between a hyperpolarized (down state) and a depolarized (up state) resting membrane potential without firing an action potential. These neurons can thus be referred to as up/down neurons. According to one model, this ability is linked to the presence of NMDA and AMPA glutamate receptors. External stimulation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gating (telecommunication)
In telecommunication, the term gating has the following meanings: #The process of selecting only those portions of a wave between specified time intervals or between specified amplitude limits. #The controlling of signals by means of combinational logic elements. #A process in which a predetermined set Set, The Set, SET or SETS may refer to: Science, technology, and mathematics Mathematics *Set (mathematics), a collection of elements *Category of sets, the category whose objects and morphisms are sets and total functions, respectively Electro ... of conditions, when established, permits a second process to occur. Telecommunications engineering Signal processing {{Telecomm-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gate (casting)
In metalworking and jewelry making, casting is a process in which a liquid metal is delivered into a Mold (manufacturing), mold (usually by a crucible) that contains a negative impression (i.e., a three-dimensional negative image) of the intended shape. The metal is poured into the mold through a hollow channel called a Sprue (manufacturing), sprue. The metal and mold are then cooled, and the metal part (the ''casting'') is extracted. Casting is most often used for making complex shapes that would be difficult or uneconomical to make by other methods. Casting processes have been known for thousands of years, and have been widely used for sculpture (especially in bronze), jewelry in precious metals, and weapons and tools. Highly engineered castings are found in 90 percent of durable goods, including cars, trucks, aerospace, trains, mining and construction equipment, oil wells, appliances, pipes, hydrants, wind turbines, nuclear plants, medical devices, defense products, toys, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gating Signal
A gating signal is a digital signal or pulse (sometimes called a "trigger") that provides a time window so that a particular event or signal from among many will be selected and others will be eliminated or discarded. In a multiple input AND/OR gate, a signal at one of the inputs triggers the passage of a signal at other inputs; i.e., it passes through or blocks the signal at other inputs. Such a signal is called a gating signal. Signal gating means to mask unwanted signal transitions from propagating forward. {{DEFAULTSORT:Gating Signal Signal processing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clock Gating
Clock gating is a popular technique used in many synchronous circuits for reducing dynamic power dissipation, by removing the clock signal when the circuit is not in use or ignores clock signal. Clock gating saves power by pruning the clock tree, at the cost of adding more logic to a circuit. Pruning the clock disables portions of the circuitry so that the flip-flops in them do not have to switch states. Switching states consumes power. When not being switched, the switching power consumption goes to zero, and only leakage currents are incurred. Although asynchronous circuits by definition do not have a global "clock", the term perfect clock gating is used to illustrate how various clock gating techniques are simply approximations of the data-dependent behavior exhibited by asynchronous circuitry. As the granularity on which one gates the clock of a synchronous circuit approaches zero, the power consumption of that circuit approaches that of an asynchronous circuit: the circuit o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Gating
Power gating is a technique used in integrated circuit design to reduce power consumption, by shutting off the current to blocks of the circuit that are not in use. In addition to reducing stand-by or leakage power, power gating has the benefit of enabling Iddq testing. Overview Power gating affects design architecture more than clock gating. It increases time delays, as power gated modes have to be safely entered and exited. Architectural trade-offs exist between designing for the amount of leakage power saving in low power modes and the energy dissipation to enter and exit the low power modes. Shutting down the blocks can be accomplished either by software or hardware. Driver software can schedule the power down operations. Hardware timers can be utilized. A dedicated power management controller is another option. An externally switched power supply is a very basic form of power gating to achieve long term leakage power reduction. To shut off the block for small intervals of ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noise Gate
A noise gate or gate is an electronic device or software that is used to control the volume of an audio signal. Comparable to a compressor, which attenuates signals ''above'' a threshold, such as loud attacks from the start of musical notes, noise gates attenuate signals that register ''below'' the threshold. However, noise gates attenuate signals by a fixed amount, known as the range. In its simplest form, a noise gate allows a main signal to pass through only when it is above a set threshold: the gate is "open". If the signal falls below the threshold, no signal is allowed to pass (or the signal is substantially attenuated): the gate is "closed". A noise gate is used when the level of the "signal" is above the level of the unwanted "noise". The threshold is set above the level of the "noise", and so when there is no main "signal", the gate is closed. A common application is with electric guitar to remove hum and hiss noise caused by distortion effects units. A noise gate does ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency-resolved Optical Gating
Frequency-resolved optical gating (FROG) is a general method for measuring the spectral phase of ultrashort laser pulses, which range from sub femtosecond to about a nanosecond in length. Invented in 1991 by Rick Trebino and Daniel J. Kane, FROG was the first technique to solve this problem, which is difficult because, ordinarily, to measure an event in time, a shorter event is required with which to measure it. For example, to measure a soap bubble popping requires a strobe light with a shorter duration to freeze the action. Because ultrashort laser pulses are the shortest events ever created, before FROG, it was thought by many that their complete measurement in time was not possible. FROG, however, solved the problem by measuring an "auto-spectrogram" of the pulse, in which the pulse gates itself in a nonlinear-optical medium and the resulting gated piece of the pulse is then spectrally resolved as a function of the delay between the two pulses. Retrieval of the pulse from its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gating (punishment)
Gating is a type of punishment similar to a detention used typically at educational institutions, especially boarding schools A boarding school is a school where pupils live within premises while being given formal instruction. The word "boarding" is used in the sense of "room and board", i.e. lodging and meals. As they have existed for many centuries, and now exten .... Precisely what a gating consists of and the rules surrounding it will vary between institutions, but the common element is that someone who has been gated is not permitted to leave the establishment. The word is used as both a noun and a verb. References School punishments Punishments {{edu-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gate (other)
A gate is an opening in a wall or fence fitted with a moveable barrier allowing it to be closed. Gate or GATE may also refer to: Arts, entertainment, and media * ''Gate'' (album), a 1995 album by Peter Frohmader * ''The Gate'', a 1987 horror film * ''Gate'' (film), a 2018 South Korean film * ''Gate'' (novel series), a 2006/2010 novel series by Takumi Yanai, with comic (manga, 2011) and television (anime, 2015) adaptations * Gate (solitaire), a card game * ''GATE'' (video game), a 1991 action-adventure video game * Gåte, a Norwegian band * Gåte (2002 EP), by the eponymous band * Grammy, Academy, Tony, and Emmy Awards, or "GATE Awards", see List of people who have won Academy, Emmy, Grammy, and Tony Awards Engineering Electronics * Gate (transistor), terminal of a field effect transistor * Logic gate, a functional building block in digital logic such as "and", "or", or "not" * Metal gate, the gate material in a MOSFET transistor * Noise gate, a high-quality audio squelc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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