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The two enzymes form a positive feedback loop and maintain CHG methylation levels.
A reduction in testosterone is sensed by the hypothalamic-pituitary axis and leads to greater LH release, which completes a negative feedback loop and maintains testosterone levels.
It seems plausible that a complex dynamic system would require a preponderance of repression over activation in order to provide feedback control and maintain stability.
Songbirds use auditory feedback to learn and maintain their songs, but how feedback interacts with vocal motor circuitry remains unclear.
Songbirds need auditory feedback to develop and maintain the normal song of their species.
The design was based on an adaptive controller using force feedback to reach and maintain a desired force in spite of movements of the operator's hand holding the device or positional changes of the subject.
Songbirds use auditory feedback to learn and maintain their vocalizations (Konishi, 1965; Price, 1979) and possess well-delineated neural circuits for singing (Nottebohm et al., 1982), thus providing an attractive organism in which to identify synaptic mechanisms for auditory vocal integration.
On the operator side, query history and feedback are maintained for cellular operators to optimize framework parameters that maximize their revenues.
To address this technological gap, we developed a metrology using piezoresistive cantilevers as force-displacement sensors coupled to a feedback system to apply and maintain defined load profiles to micrometer-scale animals.
