Bisiach's Test on Hemineglect Did Provide Support for a True

Bisiach's test on hemineglect did provide support for a true deficit in attending to certain visual stimuli.However,one limitation noted in the textbook is that ____.

A) the patients were all male
B) Bisiach only used visual stimuli.
C) anesthetizing the left hemisphere leaves patients unable to speak during the procedure
D) patients with severe symptoms were more likely to deny their symptoms