EGG Motor

Topics: Brain, Psychology, Nervous system Pages: 3 (735 words) Published: March 3, 2014
EEG Motor Planning Study - Alternative Credit Option Questions Please read the article provided about neural synchrony and cognitive dysfunction. Email a typed response in this document to the questions listed below.

1) Explain the reasons why neural synchronization might be an important mechanism in the brain related to perception and thinking. Support your answer with two experimental examples discussed in the article. Neural synchrony is associated with cognitive functions that require large-scale integration of distributed neural activity. Examples of this can include, attention-dependent stimulus selection, multimodal integration, working memory, selective routing of activity, and conscious processing of stimuli. Schizophrenia is a severe mental disorder with estimated life time prevalence of 1%. The disorder is characterized by psychotic symptoms (delusions, hallucinations), negative symptoms (flattening of affect, apathy), and disorganization of thought and behavior. There is consistent evidence that neural synchrony is impaired in patients with schizophrenia. This impairment is particularly pronounced for oscillatory activity in the B- and Y- frequency ranges and for the synchronization of these high-frequency oscillations over longer distances. Because synchronization of oscillatory activity in this frequency range is associated with cognitive functions that are disturbed in schizophrenia patients, it is conceivable that the relation between impaired synchrony and the symptomatology of schizophrenia is not merely correlative. Data an anatomical connectivity and neurotransmitter systems in schizophrenia suggest several potential causes for impaired neural synchrony, but more focused studies are required to distinguish between cause and effect.

Alzheimer’s disease is the most common form of dementia, affecting approximately 11% of the world population older than 65 years of age. AD is associated with a wide range of cognitive dysfunctions that...
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