The avian auditory brain stem consists of a network of specialized nuclei, including nucleus laminaris (NL) and superior olivary nucleus (SON). NL cells show sensitivity to interaural time difference (ITD), a critical cue that underlies spatial hearing. SON cells provide inhibitory feedback to the rest of the network. Empirical data suggest that feedback inhibition from SON could increase the I...

We investigated group II metabotropic glutamate receptor (mGluR) modulation of glutamatergic input onto hilar-border interneurones and its regulation of feedback inhibition in the dentate gyrus. Selective activation of group II mGluRs with (2S,2'R,3'R)-2-(2',3'-dicarboxycyclopropyl)glycine (DCG-IV) depressed mossy fibre (MF)-evoked excitatory drive to these interneurones with significantly grea...

Thirty-two genera of microorganisms were identified with one of six distinctive control patterns for the enzyme 3-deoxy-d-arabino-heptulosonate-7-phosphate synthetase. These patterns included sequential feedback inhibition, isoenzyme feedback inhibition, cumulative feedback inhibition, and three (apparent) simple one-effector patterns. Documentation is provided of an overwhelming tendency for c...

Relay neurons of the lateral geniculate nucleus innervate visual cortex, but they also provide axonal collaterals to neurons in the thalamic reticular nucleus, and these thalamic reticular neurons provide feedback inhibition to relay cells. An alternative source of inhibitory inputs onto geniculate relay neurons arises from intralaminar interneurons that provide feedforward inhibition via retin...

Inhibitory connections among striatal projection neurons (SPNs) called "feedback inhibition," have been proposed to endow the striatal microcircuit with computational capabilities, such as motor sequence selection, filtering, and the emergence of alternating network states. These properties are disrupted in models of Parkinsonism. However, the impact of feedback inhibition in the striatal netwo...

corrective feedback (cf) and its different types have long absorbed many scholars and practitioners. as ellis (2009) mentioned some experimental studies need to be carefully designed to discover the relative effectiveness of each of these cf techniques. the goal of this qualitative study was to discover whether the employment of different cf strategies could bring about an attitudinal shift. to...

Feedback inhibition of purine biosynthesis de novo in bacteria has been studied in some detail by Gots and his colleagues (l-4). Other observations have suggested feedback inhibition, but these are complicated by dilution of intermediary pools by the added inhibitor (5-10). This reaction has been studied less extensively in mammalian cells. Sartorelli and LePage (11) and LePage and Jones (12) h...

Feedback inhibition of purine biosynthesis de novo in bacteria has been studied in some detail by Gots and his colleagues (l-4). Other observations have suggested feedback inhibition, but these are complicated by dilution of intermediary pools by the added inhibitor (5-10). This reaction has been studied less extensively in mammalian cells. Sartorelli and LePage (11) and LePage and Jones (12) h...