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ZENK protein regulation by song in the brain of songbirds
TLDR
ZENK protein regulation can be used to assess activation of brain areas involved in perceptual and motor aspects of song in zebra finches and canaries after presentation of song playbacks.
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Global Forebrain Dynamics Predict Rat Behavioral States and Their Transitions
TLDR
It is proposed that transient oscillatory synchronization of synaptic inputs, which underlie the rapid switching of global brain states, may facilitate the exchange of information within and across brain areas at the boundaries of very distinct neural processing regimens.
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The Psychedelic State Induced by Ayahuasca Modulates the Activity and Connectivity of the Default Mode Network
TLDR
The notion that the altered state of consciousness induced by Ayahuasca, like those induced by psilocybin (another serotonergic psychedelic), meditation and sleep, is linked to the modulation of the activity and the connectivity of the DMN is supported.
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Automated analysis of free speech predicts psychosis onset in high-risk youths
TLDR
Findings support the utility of automated speech analysis to measure subtle, clinically relevant mental state changes in emergent psychosis, as well as outperforming classification from clinical interviews.
View on Nature
Noradrenergic system of the zebra finch brain: Immunocytochemical study of dopamine‐β‐hydroxylase
TLDR
The immunocytochemical distribution of dopamine‐β‐hydroxylase (DBH), a noradrenergic marker, in the brain of an oscine, the zebra finch, provides direct evidence for a nor adrenergic innervation of auditory and song control nuclei involved in song perception and production, supporting the notion that Noradrenaline is involved in vocal communication and learning in oscines.
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Spike Avalanches Exhibit Universal Dynamics across the Sleep-Wake Cycle
TLDR
The chronic implanted multielectrode arrays used to record avalanches of action potentials from the cerebral cortex and hippocampus of 14 rats, as they spontaneously traversed the wake-sleep cycle, explored novel objects or were subjected to anesthesia, reveal a unique scale-invariant regime of spike avalanches across all major behaviors.
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Dopaminergic Control of Sleep–Wake States
TLDR
It is proposed that psychosis and the sleep disturbances experienced by Parkinsonian patients result from dopamine-mediated disturbances of REM sleep, and results indicate that dopamine regulates the generation of sleep–wake states.
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Speech Graphs Provide a Quantitative Measure of Thought Disorder in Psychosis
TLDR
The results demonstrate that alterations of the thought process manifested in the speech of psychotic patients can be objectively measured using graph-theoretical tools, developed to capture specific features of the normal and dysfunctional flow of thought, such as divergence and recurrence.
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Toward a Song Code Evidence for a Syllabic Representation in the Canary Brain
View on Elsevier
Long-Lasting Novelty-Induced Neuronal Reverberation during Slow-Wave Sleep in Multiple Forebrain Areas
TLDR
The results indicate that persistent experience-dependent neuronal reverberation is a general property of multiple forebrain structures, and does not consist of an exact replay of previous activity, but instead it defines a mild and consistent bias towards salient neural ensemble firing patterns.
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