Longitudinal fissure result from lesions to them. Diffusion tensor imaging (DTI or dMRI) along with fiber-tracking (FT) algorithms and functional Magnetic Resonance Imaging (fMRI) is used to image these bundles. For instance, occipital-callosal fiber tracts were localized with 1–2 mm precision using DTI-TF techniques - which are very important for the cooperation of visual cortices, and any lesion to them can lead to alexia, the inability to read. Longitudinal fissure The longitudinal fissure (or cerebral fissure, median longitudinal fissure, or interhemispheric fissure) is the deep groove that separates the two hemispheres of the vertebrate brain. The medial surfaces of the two hemispheres
Red Hills Fissure Pleistocene. The abundant fossil remains of the Jamaican Coney ("Geocapromys brownii") found there have enabled the construction of a life table for that species. Analysis of fluorine uptake in the fossil bone has allowed the time-span of the deposit to be dated to about 25–40 thousand years ago. Fossil remains of the extinct Jamaican flightless ibis ("Xenicibis xympithecus") have also been found there. Red Hills Fissure Red Hills Fissure is a palaeontological site at the Red Hills in Saint Andrew Parish of south-eastern Jamaica. The Red Hills Fissure is a karstic solutional feature, with a vertical extent of about 8