Figure 1.

Cooling the right visual cortex deactivates the left visual hemifield. Stimulus presentation and the visual pathways representing the binocular visual field. Gabor stimuli (5°) were presented next to the vertical meridian (VM) in the right hemifield centered between 2.5° and 9°. Red represents signal flow from the right visual hemifield to the left hemisphere; blue represents signal flow from the left hemifield to the right hemisphere. Axons form nasal retina halves cross at the optic chiasm (OC), whereas temporal retina halves continue ipsilaterally. CCs are particularly dense at the TZ representing the VM. We thermally deactivated an 8 × 6 mm² area, including the TZ of the right hemisphere. Thus, visual input from the left visual hemifield coming from that hemisphere was removed. IN/OUT, Direction of stimulus movement toward/away from the functionally deactivated hemifield; LGN, lateral geniculate nucleus. The snowflake indicates the “deactivated” visual hemifield.