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Play media Neurons firing in synchrony in circadian pacemaker cells Phase resetting in neurons is a behavior observed in different biological oscillators and plays a role in creating neural synchronization as well as different processes within the body. Phase resetting in neurons is when the dynamical behavior of an oscillation is shifted. This occurs when a stimulus perturbs the phase within an oscillatory cycle and a change in period occurs. The periods of these oscillations can vary depending on the biological system, with examples such as: (1) neural responses can change within a millisecond to quickly relay information; (2) In cardiac and respiratory changes that occur throughout the day, could be within seconds; (3) circadian rhythms may vary throughout a series of days; (4) rhythms such as hibernation may have periods that are measured in years. [1] [2] This activity pattern of neurons is a phenomenon seen in various neural circuits throughout the body and is see...

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Hippocampus proper Diagram of hippocampal regions in a rat brain. Basic circuit of the hippocampus, shown using a modified drawing by Ramon y Cajal. DG: dentate gyrus. Sub: subiculum. EC: entorhinal cortex Details Identifiers Latin hippocampus proprius, cornu Ammonis MeSH D006624 NeuroNames 182 TA A14.1.09.327 FMA 72045 Anatomical terms of neuroanatomy [edit on Wikidata] The hippocampus proper refers to the actual structure of the hippocampus which is made up of four regions or subfields. The subfields CA1, CA2, CA3, and CA4 use the initials of cornu Ammonis, an earlier name of the hippocampus. Contents 1 Structure 1.1 CA1 1.2 CA2 1.3 CA3 1.4 CA4 2 Additional images 3 References Structure There are four regions in the hippocampus proper which form a neural circuit called the trisynaptic circuit. CA1 CA1 is the first region in the hippocampal circuit, from which a major output pathway goes to layer V...

Not to be confused with other types of electrography. "EEG" redirects here. For other uses, see EEG (disambiguation). Electroencephalography Epileptic spike and wave discharges monitored with EEG [edit on Wikidata] Electroencephalography ( EEG ) is an electrophysiological monitoring method to record electrical activity of the brain. It is typically noninvasive, with the electrodes placed along the scalp, although invasive electrodes are sometimes used such as in electrocorticography. EEG measures voltage fluctuations resulting from ionic current within the neurons of the brain. [1] In clinical contexts, EEG refers to the recording of the brain's spontaneous electrical activity over a period of time, [1] as recorded from multiple electrodes placed on the scalp. Diagnostic applications generally focus either on event-related potentials or on the spectral content of EEG. The former investigates potential fluctuations time locked to an event like stimulus onse...