The results suggest a coexistence of hierarchical and lateralization schemes for representing increasing time windows in auditory association cortex. The data show bilateral activity in the planum temporale and anterior superior temporal gyrus as a function of increasing time windows, as well as activity in the superior temporal sulcus that was significantly lateralized to the right. The present functional magnetic resonance imaging study assessed brain activation in response to the systematic variation of the time window in complex spectra that are more similar to natural sounds than in previous studies. Once this information is processed it is sent to the lateral nucleus of the amygdala. In other words, information is heard through an intact auditory cortex in the anterior temporal lobe, however, when it arrives at the posterior association. Sound information is brought from the ears through the auditory cortex, a part of the temporal lobe in the cerebral cortex. Recent studies suggest differences in the encoding of shorter and longer time windows in left and right auditory cortex, respectively. Two important areas of the brain involved in Auditory learning are the amygdala and the hippocampus (Carson & Birkett, 2017). The degree of variation can be characterized in terms of correlation between successive time frames of the spectrum, or as a time window within which any two frames show a minimum degree of correlation: the greater the correlation of the spectrum between successive time frames, the longer the time window. Sources obtained with the MMN paradigm have been located in auditory association areas at about 150200 ms following auditory onset and in the STS from 250. The auditory association area is located within the temporal lobe of the brain. Natural sounds contain multiple spectral components that vary over time. Learn about the primary auditory cortex & secondary auditory cortex. The primary auditory cortex (A1) is located on the superior temporal gyrus in the temporal lobe and receives point-to-point input from the ventral division of.
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