Distortions, cognitive

The cognitive model, in which certain life experiences contribute to the development of pervasive cognitive schemas or cognitive distortions—negative mental sets and expectations that automatically influence ongoing perceptions, conclusions, and predictions about the future (Beck, Ellis)... 

Temporal cortex tglutamate receptors 1 density of glutamater-gic neurons reality distortion, cognitive deficits... 

The schizophrenia syndrome is characterized by a variety of cognitive and emotional impairments that may be conceptualized as falling into three broad categories positive symptoms, negative symptoms, and disorganization. Positive symptoms (hallucinations and delusions) appear to reflect an excess or distortion of normal functions and are often the most obvious symptoms. Disorganized speech and behavior are sometimes... 

A final link in the chain of mechanisms that may produce cultural variation in occurrent emotions turns on the capacity of emotion to modify and distort cognition. Figure 8.2 offers an example that, in fact, involves all three relations between emotion and cognition. 

In order to be able to model this cognitive effect it was necessary to quantify to what extent a distortion, as found by the model, resulted from leaving out a time-frequency component or from the introduction of a new time-frequency component in the signal. One problem was that when a distortion is introduced in the signal at a certain time-frequency point there will in general already be a certain power level at that point. Therefore a time-frequency component will never be completely new. A first approach to quantify the asymmetry was to use the power ratio between output and input at a certain time-frequency point to quantify the newness of this component. When the power ratio between the output y and input x, py /px at a certain time-frequency point is larger than 1.0 an audible distortion is assumed more annoying than when this ratio is less than 1.0. 

White JL, Darko DF, Brown SJ, Miller JC, Hayduk R, Kelly T, Mitler MM. Early central nervous system response to HIV infection sleep distortion and cognitive-motor decrements. AIDS 1995 9 1043-1050. 

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