An experiment on the hypothesis of the auditory lateralization
Here we test how the asymmetry is modified by the presence of semantic information in the auditory stimulus.
In Experiment C only correct responses were analyzed. The degree of asymmetry correlates with the strength of auditory-frontal connectivity during a syllable perception task.
Subjects were instructed to stop the procedure and ask for instructions as necessary. Essays may be lightly modified for readability or to protect the anonymity of contributors, but we do not edit essay examples prior to publication. Three token stimuli were presented for each trial with one of the three, in random order, varying on the experimental parameter. For the gap detection experiments markers were either broad-band noise or tones. The result was the average of the final eight parameter values. A LEA and laterality is demonstrated for tonal stimuli while no laterality is noted for noise stimuli. Generally, attention is focused by the task itself, such as asking the subject to discriminate stimuli along the dimension of interest. Table 1 summarizes these conjectures. While ii is preferentially conducted by the right hemisphere, iii is more represented in the left Giraud and Poeppel, Wernicke's aphasia is characterized by phonemic paraphasias, neologism or jargon. His research involved the male patient nicknamed "Tan", who suffered a speech deficit aphasia ; "tan" was one of the few words he could articulate, hence his nickname. Thus, we chose to adopt for each analysis the approach applied in the original work. Differences in the cytoarchitecture of the left and right temporal lobes has also been noted with the left showing larger pyramidal cells, wider columns and denser afferent innervation Hutsler,
Red line: linear regression. The auditory trials consisted of streams of syllables at different rates: 2. Moreover, individual differences in neural function and structure can also strongly affect the symmetry of the speech tracking between the hemispheres. Another characteristic of a person with Wernicke's aphasia is that they are unconcerned by the mistakes that they are making.
The mean average threshold for both ears was 2.
based on 104 review