PHGY 209 Lecture Notes - Lecture 5: Ganglion Cell, Photodiode, Central Canal

• School: McGill University
• Department: Physiology
• Course: PHGY 209
• Professor: Melissa A Vollrath

Document Summary

Dorsal column is carrying ipsilateral touch and proprioceptor information. If there was a lesion in the central canal, you would lose pain and temperature coming in from both sides. Left hemi section of spinal cord at lower thoracic level. Dorsal columns, carrying ipsilateral touch and proprioception information. If it damages, you don"t feel touch and proprioception on the level of the lesion and bellow. Anterior lateral column carrying contralateral pain and temperature information. If it is damaged the contralateral side of the lesion and bellow will not feel pain and temperature. Nothing is getting into the spinal section, so all somatosensory of that level of the body are lost. Visual system is not only a camera taking pictures of the world. It is adding in, forming and correcting things. Cornea = sclera that clears up on the very front. Pupil = behind the cornea, opening that lets light int.