The Technique of Transcranial Magnetic Stimulation Employs Strong Magnetic Pulses

The technique of transcranial magnetic stimulation employs strong magnetic pulses at a particular site on the scalp.When this technique is applied to the scalp near Area V1,the effect is

A) to give the participant rich and detailed hallucinations.
B) a temporary disruption of vision but not visual imagery.
C) a permanent disruption of visual imagery,and therefore use of the technique is unethical.
D) a temporary disruption of vision and visual imagery.