Search results
Results from the WOW.Com Content Network
Amnesic patients with damage to the hippocampus are able to demonstrate some degree of unimpaired semantic memory, despite a loss of episodic memory, due to spared parahippocampal cortex. [38] In other words, retrograde amnesics "know" about information or skill, but cannot "remember" how they do.
Particularly, damage to hippocampal CA1 cells adversely affects memory formation, [3] and this disruption has been linked to dose-dependent levels of alcohol consumption. [4] At higher doses, alcohol significantly inhibits neuronal activity in both the CA1 and CA3 pyramidal cell layers of the hippocampus.
The hippocampus is the brain region located in the medial temporal lobe, responsible for forming new episodic and semantic memories. As a result of his neurological damage, Cochrane suffered severe cognitive deficits that hindered his ability to form new episodic memories. However, both his semantic memory and noetic consciousness remained ...
In Alzheimer's disease (and other forms of dementia), the hippocampus is one of the first regions of the brain to suffer damage; short-term memory loss and disorientation are included among the early symptoms. Damage to the hippocampus can also result from oxygen starvation , encephalitis, or medial temporal lobe epilepsy.
This decrease in neurogenesis is due to apoptosis of the neurons which usually occurs after irradiation. However it has not been proven whether the apoptosis is a direct result of the radiation itself or if there are other factors that cause neuronal apoptosis, namely changes in the hippocampus micro-environment or damage to the precursor pool. [3]
Due to the positioning of this lobe at the back of the head it is not susceptible to much injury but any significant damage to the brain can cause a variety of damage to our visual perception system. Common problems in the occipital lobe are field defects and scotomas , movement and colour discrimination, hallucinations , illusions , inability ...
Temporal lobe damage has been linked to a temporal gradient of this sort, because older memories are less dependent on the hippocampus and thus are less influenced by its damage. [ 15 ] There is a significant link between individuals currently experiencing PTA and their performance on the Wechsler Adult Intelligence Scale (WAIS).
The hippocampus is located in the medial temporal lobe (subcortical), and is an infolding of the medial temporal cortex. [1] The hippocampus plays an important role in the transfer of information from short-term memory to long-term memory during encoding and retrieval stages. These stages do not need to occur successively, but are, as studies ...