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• W1869348543 abstract "Although previous in vitro studies revealed inhibitory synaptic connections of fast-spiking interneurons to principal cells in the striatum, uncertainty remains about the nature of the behavioural events that correlate with changes in interneuron activity and about the temporal coordination of interneuron firing with spiking of principal cells under natural conditions. Using in vivo tetrode recordings from the ventral striatum in freely moving rats, fast-spiking neurons were distinguished from putative medium-sized spiny neurons on the basis of their spike waveforms and rates. Cross-correlograms of fast-spiking and putative medium-sized spiny neuron firing patterns revealed a variety of temporal relationships, including peaks of concurrent firing and transient decrements in medium-sized spiny neuron spiking around fast-spiking unit activity. Notably, the onset of these decrements was mostly in advance of the fast-spiking unit firing. Many of these temporal relationships were dependent on the sleep-wake state. Coordinated activity was also found amongst pairs of the same phenotype, both fast-spiking units and putative medium-sized spiny neurons, which was often marked by a broad peak of concurrent firing. When studying fast-spiking neurons in a reward-searching task, they generally showed a pre-reward ramping increment in firing rate but a decrement specifically when the rat received reward. In conclusion, our data indicate that various forms of temporally coordinated activity exist amongst ventral striatal interneurons and principal cells, which cannot be explained by feed-forward inhibitory circuits alone. Furthermore, firing patterns of ventral striatal fast-spiking interneurons do not merely correlate with the general arousal state of the animal but display distinct reward-related changes in firing rate." @default.
• W1869348543 created "2016-06-24" @default.
• W1869348543 creator A5051130900 @default.
• W1869348543 creator A5062204088 @default.
• W1869348543 creator A5082482795 @default.
• W1869348543 creator A5084144024 @default.
• W1869348543 date "2010-08-02" @default.
• W1869348543 modified "2023-10-17" @default.
• W1869348543 title "Fast-spiking interneurons of the rat ventral striatum: temporal coordination of activity with principal cells and responsiveness to reward" @default.
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• W1869348543 doi "https://doi.org/10.1111/j.1460-9568.2010.07293.x" @default.
• W1869348543 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20704595" @default.
• W1869348543 hasPublicationYear "2010" @default.
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