Cortical Activation and Language Task Difficulty in Aphasia
Fridriksson, Julius and Morrow, Leigh
Cortical Activation and Language Task Difficulty in Aphasia. In Clinical Aphasiology Conference: Clinical Aphasiology Conference (2004 : 34th : Park City, UT : May 2004) / : (2004).
The purpose of this investigation was to compare cortical activation associated with varying language task difficulty in persons with aphasia. Four persons with aphasia participated along with four matched control subjects. Participants performed a pictureword verification task during functional MRI (fMRI) scanning. Difficulty of the language task was manipulated using two levels of temporal constraints: in the less difficult condition, two picture-word pairs were presented consecutively for two seconds each while participants had to determine the correctness of the picture-word match; in the more difficult condition, three picture-word pairs were presented but only for 1.333 sec each. Although the persons with aphasia performed the language task with lower accuracy than their normal counterparts, the proportional cortical activation difference between two difficulty levels was similar in the two groups. These findings have implications for studies utilizing fMRI to investigate cortical activation associated with treatment-induced recovery from aphasia.
|EPrint Type:||Clinical Aphasiology Abstract|
|Conference:||Clinical Aphasiology Conference: Clinical Aphasiology Conference (2004 : 34th : Park City, UT : May 2004)|
|Additional Information:||ABSTRACT ONLY. No full text available.|