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Chapter 22: Q27CQ (page 810)

Measurements of the weak and fluctuating magnetic fields associated with brain activity are called magnetoencephalograms (MEGs). Do the brain’s magnetic fields imply coordinated or uncoordinated nerve impulses? Explain.

Short Answer

Expert verified

The brain’s magnetic field implies coordinated nerve impulses.

Step by step solution

01

Concept Introduction

The area around a magnetic making or a dislocating electric complaint within which the force of captivation acts is known as the magnetic field. Magnetic forces are observable in a magnetic field, which is a vector field in the vicinity of an attraction, electric stock, or changing electric field.

02

Explaining that, do the brain’s magnetic fields imply coordinated or uncoordinated nerve impulses

As, fluctuations imply that regular cycles are going on in the brain, which would not be conceivable if nerve impulses were uncoordinated, a fluctuating magnetic field would imply coordinated nerve impulses.

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Most popular questions from this chapter

(a) At what angle θ is the torque on a current loop 90.0% of maximum? (b) 50.0% of maximum? (c) 10.0% of maximum?

(a) A pendulum is set up so that its bob (a thin copper disk) swings between the poles of a permanent magnet as shown in Figure 22.63. What is the magnitude and direction of the magnetic force on the bob at the lowest point in its path, if it has a positive0.250μCcharge and is released from a height of 30.0 cmabove its lowest point? The magnetic field strength is 1.50 T (b) What is the acceleration of the bob at the bottom of its swing if its mass isgrams and it is hung from a flexible string? Be certain to include a free-body diagram as part of your analysis.

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(b) What is the ratio of l1/l2that gives zero field strength at the center of the loop?

(c) What is the direction of the field directly above the loop under this circumstance?

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