<P> For a long time , it was assumed that the role of Broca 's area was more devoted to language production than language comprehension . However , there is evidence to demonstrate that Broca 's area also plays a significant role in language comprehension . Patients with lesions in Broca 's area who exhibit agrammatical speech production also show inability to use syntactic information to determine the meaning of sentences . Also , a number of neuroimaging studies have implicated an involvement of Broca 's area , particularly of the pars opercularis of the left inferior frontal gyrus , during the processing of complex sentences . Further , it has recently been found in functional magnetic resonance imaging ( fMRI ) experiments involving highly ambiguous sentences result in a more activated inferior frontal gyrus . Therefore , the activity level in the inferior frontal gyrus and the level of lexical ambiguity are directly proportional to each other , because of the increased retrieval demands associated with highly ambiguous content . </P>
<P> For a long time , it was assumed that the role of Broca 's area was more devoted to language production than language comprehension . However , there is evidence to demonstrate that Broca 's area also plays a significant role in language comprehension . Patients with lesions in Broca 's area who exhibit agrammatical speech production also show inability to use syntactic information to determine the meaning of sentences . Also , a number of neuroimaging studies have implicated an involvement of Broca 's area , particularly of the pars opercularis of the left inferior frontal gyrus , during the processing of complex sentences . Further , it has recently been found in functional magnetic resonance imaging ( fMRI ) experiments involving highly ambiguous sentences result in a more activated inferior frontal gyrus . Therefore , the activity level in the inferior frontal gyrus and the level of lexical ambiguity are directly proportional to each other , because of the increased retrieval demands associated with highly ambiguous content . </P>
which region of the brain is responsible for motor aspects of speech
which region of the brain is responsible for motor aspects of speech
Broca 's area
Broca 's area