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Hippocampal sclerosis (HS) or mesial temporal sclerosis (MTS) is a neuropathological condition with severe neuronal cell loss and gliosis in the hippocampus. [1] Neuroimaging tests such as magnetic resonance imaging (MRI) and positron emission tomography (PET) may identify individuals with hippocampal sclerosis. [ 2 ]
loss of Housetraining skills. [ 8 ] Affected cats may wander aimlessly and look lost in space, seem restless and anxious, fail to recognize familiar faces such as their owners, caretakers or other cats in the clowder, display decreased interest in social interactions or increased aggression, experience insomnia, sometimes along with increased ...
Individuals who develop hippocampal lesions often fare poorly on measures of verbal declarative memory. Tests involving the recall of paragraphs or strings of words, as cited by Bremner and colleagues, illustrate a degree of dysfunction among lesion patients proportionate to the percentage of hippocampal volume and the amount of cells lost. [7]
The hippocampus (pl.: hippocampi; via Latin from Greek ἱππόκαμπος, 'seahorse'), also hippocampus proper, is a major component of the brain of humans and many other vertebrates. In the human brain the hippocampus, the dentate gyrus, and the subiculum are the components of the hippocampal formation located in the limbic system.
The size of the brain is a frequent topic of study within the fields of anatomy, biological anthropology, animal science and evolution.Measuring brain size and cranial capacity is relevant both to humans and other animals, and can be done by weight or volume via MRI scans, by skull volume, or by neuroimaging intelligence testing.
Cerebral atrophy is a common feature of many of the diseases that affect the brain. [1] Atrophy of any tissue means a decrement in the size of the cell, which can be due to progressive loss of cytoplasmic proteins.
Cat intelligence is the capacity of the domesticated cat to solve problems and adapt to its environment. Research has shown that feline intelligence includes the ability to acquire new behavior that applies knowledge to new situations, communicating needs and desires within a social group, and responding to training.
The veterans with PTSD showed an 8% reduction in their right hippocampal volume. The patients that suffered from child abuse showed a 12% reduction in their mean left hippocampal volume. [59] Several of the studies have also shown that people with PTSD have deficits while performing verbal declarative memory tasks in their hippocampus. [59]