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The entorhinal cortex (EC) is a structure in the brain located in the medial temporal lobe.The EC is composed of six distinct layers. The superficial (outer) layers, which include layers I through III, are mainly input layers that receive signals from other parts of the EC, but also project to hippocampal structures via the perforant path.
This system, closely related to the system of emotional arousal, is located predominantly in the limbic structures of the brain. Its existence was proved by demonstration of the "pleasure centers," that were discovered as the location from which electrical self-stimulation is readily evoked.
This concept does not represent the process for transmitting signals between neurons in the brain beyond the developmental stage. In collaboration with the University of Rochester’s Institute of Optics, Nedergaard and her team had developed a new 2-photon microscope that had allowed researchers to observe glia activity in the living brain ...
Since the 1970s, the concept of the triune brain has been subject to criticism in evolutionary and developmental neuroscience [1] and is regarded as a myth. [2] Although it overlaps in some respects with contemporary understanding of the brain, [ 3 ] the triune brain hypothesis is no longer espoused by comparative neuroscientists in the post ...
It is important in mediating saccadic eye movements. [2] It is probably not involved in smooth pursuit. [2] The PPRF generates excitatory bursts that are delivered to the ipsilateral abduecens nucleus to drive ipsilateral saccades (inhibitory saccadic stimuli are meanwhile delivered to the abducens nucleus from the contralateral medulla oblongata).
The parietal lobe is located directly behind the central sulcus, superior to the occipital lobe and posterior to the frontal lobe, visually at the top of the back of the head. [18] The make up of the parietal lobe is defined by four anatomical boundaries in the brain, providing a division of all the four lobes. [18]
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Schematic of the HPA axis (CRH, corticotropin-releasing hormone; ACTH, adrenocorticotropic hormone) Hypothalamus, pituitary gland, and adrenal cortex The hypothalamic–pituitary–adrenal axis (HPA axis or HTPA axis) is a complex set of direct influences and feedback interactions among three components: the hypothalamus (a part of the brain located below the thalamus), the pituitary gland (a ...