lecture 4: sensory systems

Question 1

discriminative information

Answer 1

the ability to tell two point apart on skin

Question 2

non-discriminative information

Answer 2

crude touch - simply the sense of being touched. pain and temp

Question 3

dorsal funiculus

Answer 3

carries discriminative information via -
cuneate fasiculus: body above legs
gracile fasiculus: lower body

Question 4

proprioception

Answer 4

discrimiantive information, where body is positioned, what it is feeling on outside

Question 5

purpose of thalamus

Answer 5

to package information of pain, temp and senses and send to cortex. Filters so you can focus on what is important

Question 6

brown sequard syndrome

Answer 6

where one side of spinal chord damaged but not other. information that doesn’t go through lesion will reach brain

Question 7

associative sensory loss

Answer 7

lesion in brain stem, both information from the opposite side lost

Question 8

decussation

Answer 8

where information carried crosses to other side of body

Question 9

dissociative sensory loss

Answer 9

lesion to a single tract in the spinal cord which involves preservation of fine touch and proprioception with selective loss of pain and temperature