Search results
Results from the WOW.Com Content Network
Chronic stress can affect the brain structure and cognition. Studies considered the effects of both intrinsic and extrinsic stress on memory functions, using for both of them Pavlovian conditioning and spatial learning. [8] In regard to intrinsic memory functions, the study evaluated how stress affected memory functions that was triggered by a ...
The hippocampus is a structure in the brain that has been associated with various memory functions. It is part of the limbic system, and lies next to the medial temporal lobe. It is made up of two structures, the Ammon's Horn, and the Dentate gyrus, each containing different types of cells. [1]
Paul D. MacLean, as part of his triune brain theory (which is now considered outdated [citation needed] [31] [32]), hypothesized that the limbic system is older than other parts of the forebrain, and that it developed to manage circuitry attributed to the fight or flight first identified by Hans Selye [33] in his report of the General ...
If there is an increased amount, memory connections become blocked, memory functions decrease much more than what is normal for that age and a memory disorder is diagnosed. [ 35 ] [ 37 ] The cholinergic hypothesis of geriatric memory dysfunction is an older hypothesis that was considered before beta-amyloid deposits, neurofibrillary tangles, or ...
Hippocampus and associated structures; Fornix and septal nuclei; Subcortical areas: Septal nuclei; Amygdala; Nucleus accumbens; Diencephalic structures: Hypothalamus; Mammillary bodies; Anterior nuclei of thalamus; Other areas that have been included in the limbic system include the: Stria medullaris; Central gray and dorsal and ventral nuclei ...
Intense psychological stress caused by unwanted, troublesome memories can cause brain structures such as the amygdala, hippocampus and frontal cortex to become activated, as they process the memory. Related to this, there is some neuroimaging ( fMRI ) evidence that those who are susceptible to PTSD have a hippocampus with a reduced size. [ 4 ]
Parkinson's disease (PD) primarily involves damage to subcortical brain structures and is usually associated with movement difficulties, in addition to problems with memory and thought processes. [50] Persons affected by PD often demonstrate difficulties in working memory, a component of executive functioning.
The human brain is the central organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sensory nervous system ...