The lesion is one of the left occipital cortex in the cuneate lobe and the neighbourhood of the calcarine fissure.
Such a loss agrees with a lesion involving the upper part of the cuneate lobe above the calcarine fissure.
The visual hallucinations are doubtless due to lesion of thecalcarine region.
But in the man-like apes and in man this kind of cortex is confined to one region of the occipital lobe, namely, that of the calcarinefissure and the cuneus behind that.
That is, the piece of visual field which corresponds with the yellow spot of the retina is not affected in either eye, unless the calcarine regions of both hemispheres are destroyed.
The area of cortex characterized by the stripe of Gennari occupies in man, as mentioned, the calcarine and cuneate region.
This latter is very thick in the calcarine region, and forms the white stria of Gennin, while the inner band is best seen in the precentral gyrus.
The internal parieto-occipital andcalcarine are real fissures, because they cause an elevation in the interior of the brain, known as the hippocampus minor.
Where the destruction of the visuo-sensory cortex in one calcarine region is complete, a candle-flame offered in the hemianopic field cannot even be perceived.
Destruction of the calcarine region of one hemisphere produces therefore "crossed hemianopia," that is, loss of the opposite half of the field of vision.
Just in front of the anterior end of the calcarine fissure the callosal gyrus is constricted to form the isthmus which connects it with the hippocampal or uncinate gyrus.
He identifies--and the reasons for this identification do not seem capable of refutation--the calcarine fissure of the primate brain with the splenial fissure of the brain of other mammals.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "calcarine" in a variety of sentences. We hope that you will now be able to make sentences using this word.
