What is oscillatory activity?
Oscillatory activity in groups of neurons generally arises from feedback connections between the neurons that result in the synchronization of their firing patterns. The interaction between neurons can give rise to oscillations at a different frequency than the firing frequency of individual neurons.
What is oscillatory memory?
In particular, we examine the role oscillatory states can serve as an underlying mechanism to allow for multiple stable, active items in memory, to establish binding via synchronous relationships, to transition between different active working memory states, and to rapidly activate and terminate activity in those …
What are oscillations in psychology?
The term “brain (or neural) oscillations” refers to the rhythmic and/or repetitive electrical activity generated spontaneously and in response to stimuli by neural tissue in the central nervous system. The importance of brain oscillations in sensory-cognitive processes has become increasingly evident.
What is neuron activity?
Neuronal activity is an important player during the maturation phase of neuronal development, as it modulates the establishment and refinement of neuronal connections, mainly through its effects on dendrite morphology and synaptic plasticity.
What type of oscillations are associated with exploration and REM sleep?
Theta oscillations
Theta oscillations are strongest in the hippocampus during movement, exploration, sniffing, and REM sleep.
Where are theta waves generated in the brain?
The hippocampus
The hippocampus is the main structure involved in the generation of the 4- to 12-Hz theta (θ) rhythm, which is one of the most regular EEG oscillation that can be recorded from the mammalian brain.
How does brain activity work?
Your brain contains billions of nerve cells arranged in patterns that coordinate thought, emotion, behavior, movement and sensation. A complicated highway system of nerves connects your brain to the rest of your body, so communication can occur in split seconds.
What is oscillatory synchrony?
The idea that oscillatory synchrony has a functional role for large scale integration of sensory signals was initially proposed by Singer and colleagues as the “binding by synchrony” hypothesis, which aimed to explain how the different features of stimuli are bound to lead to a unified perception of an object (for …
How is hippocampus related to sleep?
Hippocampal activity seems to specifically support memory consolidation during sleep, through specific coordinated neurophysiological events (slow waves, spindles, ripples) that would facilitate the integration of new information into the pre-existing cortical networks.