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Amygdala neurons show various types of oscillation during emotional arousal, such as theta activity. These synchronized neuronal events could promote synaptic plasticity (which is involved in memory retention) by increasing interactions between neocortical storage sites and temporal lobe structures involved in declarative memory .
The Intercalated cells of the amygdala (ITC or ICCs) are GABAergic neurons situated between the basolateral and central nuclei of the amygdala that play a significant role in inhibitory control over the amygdala. [1] They regulate amygdala-dependent emotional processing like fear memory and social behavior.
When neurons within this ensemble are silenced in a rodent model the affective component of pain is essentially erased, while a robust reflex response is maintained. [14] This is thought to implicate the basolateral amygdala in assigning a “pain tag” to valence information which may intrinsically encode that there is a priority to engage in ...
The human brain is primarily composed of neurons, glial cells, neural stem cells, and blood vessels. Types of neuron include interneurons, pyramidal cells including Betz cells, motor neurons (upper and lower motor neurons), and cerebellar Purkinje cells. Betz cells are the largest cells (by size of cell body) in the nervous system. [40]
However, when the amygdala was initially thought to be linked to fear, this gave way for research in the amygdala for emotional processes. Kheirbek [17] demonstrated research that the amygdala is involved in emotional processes, in particular the ventral hippocampus. He described the ventral hippocampus as having a role in neurogenesis and the ...
Pyramidal cells, or pyramidal neurons, are a type of multipolar neuron found in areas of the brain including the cerebral cortex, the hippocampus, and the amygdala. Pyramidal cells are the primary excitation units of the mammalian prefrontal cortex and the corticospinal tract .
Hebian plasticity is believed to involve N-methyl-d-aspartate receptors (NMDARs) and are located on postsynaptic neurons in the lateral amygdala. NMDARs are known to be coincidence detectors of presynaptic activity and postsynaptic depolarization. Auditory inputs are NMDARs in the lateral amygdala and use glutamate as a transmitter. [6]
The striatum (pl.: striata) or corpus striatum [5] is a cluster of interconnected nuclei that make up the largest structure of the subcortical basal ganglia. [6] The striatum is a critical component of the motor and reward systems; receives glutamatergic and dopaminergic inputs from different sources; and serves as the primary input to the rest of the basal ganglia.