The Human Memory - what it is, how it works and how it can go wrong
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The Human Memory - what it is, how it works and how it can go wrong
INTRODUCTION
TYPES OF MEMORY
MEMORY PROCESSES
MEMORY DISORDERS
MEMORY & THE BRAIN
SOURCES & REFERENCES

Memory Disorders
  Introduction
  Age Associated
  Alcohol
  Alzheimer's Disease
  Amnesia
     Anterograde Amnesia
     Retrograde Amnesia
     Psychogenic Amnesia
     Post-Traumatic Amnesia
  Autism
  Dementia
  HIV
  Huntington's Disease
  Korsakoff's Syndrome
  OCD
  Parkinson's Disease
  Schizophrenia
  Stroke
  Tourette Syndrome


HUMAN IMMUNODEFICIENCY VIRUS (HIV)

??? Did You Know ???
Researchers have found that HIV-related cognitive impairments are similar in some respects to Alzheimer’s-related dementia, particularly the presence of low levels of the protein amyloid beta in the spinal fluid (this protein tends to accumulate in the brains of patients with Alzheimer’s, leading to lower levels in the spinal fluid), although the progression towards cognitive dysfunction in HIV patients differs from that in patients with Alzheimer’s disease.
Human immunodeficiency virus (HIV) is a virus that infects vital cells in the human immune system, such as helper T cells, macrophages and dendritic cells. Untreated, the virus causes acquired immunodeficiency syndrome (AIDS), a condition in which the immune system begins to fail, often with fatal results.

Many HIV patients suffer from cognitive dysfunction and memory problems. The dementia associated with HIV-positive individuals is known as the AIDS Dementia Complex (ADC). It is believed that ADC occurs as a result of brain cells that are infected with the virus, leading to nervous system and mental symptoms, such as loss of concentration, forgetfulness, loss of memory, problems with thinking, inability to focus for long periods of time and irritability, among others.

Although not its major consequence, HIV also often targets neural systems used by procedural memory, notably in the striatum and basal ganglia parts of the brain. White matter irregularity and subcortical atrophy in these areas, which are necessary for both procedural memory and motor-skills, have been documented in HIV-positive patients. Studies have shown that HIV-positive individuals perform worse than HIV-negative participants in procedural memory tasks (such as the rotary pursuit, mirror star tracing and weather prediction tasks), suggesting that poorer overall performance on such tasks is due to the specific changes in the brain caused by the disease.

 
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© 2010 Luke Mastin
 

what is memory, what is human memory