Brain blood flow: alteration by prior exposure to a learned task

See allHide authors and affiliations

Science  20 Jan 1978:
Vol. 199, Issue 4326, pp. 318-319
DOI: 10.1126/science.563624


Chicks with the eyelids of one eye sutured were trained to discriminate between grains and pebbles. The learned experience was completely recognizable by the naive eye that had been occluded during training. When both eyes were opened after monocular training, the velocity of blood flow through paired left and right brain regions was identical. However, when chicks were reexposed to the discrimination situation, blood flow through the cerebral hemisphere associated with the naive eye was greater than that through the hemisphere associated with the trained eye.