2. A neurosurgeon believes that lesions in a particular area of the brain, called thethalamus, will decrease pain perception. If so, this could be important in the treatment ofterminal illness that is accompanied by intense pain. As a first attempt to test thishypothesis, he conducts an experiment in which 16 rats are randomly divided into twogroups of eight each. Animals in the experimental group receive a small lesion in the partof the thalamus thought to be involved with pain perception. Animals in the control groupreceive a comparable lesion in a brain area believed to be unrelated to pain. Two weeksafter surgery, each animal is given a brief electrical shock to the paws. The shock isadministered in an ascending series, beginning with a very low intensity level andincreasing until the animal first flinches. In this manner, the pain threshold to electric shockis determined for each rat. The following data are obtained. Each score represents thecurrent level (milli-amperes) at which flinching is first observed. The higher the currentlevel is, the higher is the pain threshold. Note that one animal died during surgery andwas not replaced.Neutral Area LesionsThalamic Lesions1.90.80.71.81.21.60.51.50.41.00.90.91.41.71.1Is there any decrease pain perception on the lesions of the thalamus?

Neutral Area Lesions Thalamic Lesions 0.8 1.9 0.7 1.8 1.2 1.6 0.5 1.5 0.4 1 0.9 0.9…

Answered: inal illness that is accompanied by…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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