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question area restricted search
Question: area-restricted search
  • After spending 30 minutes on a food patch, a nematode (C. elegans) is transferred to an empty patch containing no food. Would the frequency of high-angle turns likely be greater:a) during the first 5 minutes on the empty patchb) after 30 minutes on the empty patch

ANSWER: a) during the first 5 minutes

MCB 419 Exam II practice questions

question artificial insect

ANSWER: yes, because the center-of-mass falls within the base-of-support.

Question: artificial insect
  • Assuming the center-of-mass is at the location marked by the X, is the following leg placement pattern stable?

square = leg down

no-square = leg up

X

MCB 419 Exam II practice questions

question artificial insect3

pacemaker

(cmd: foot up,

swing forward)

forward angle sensor

forward swing

motor neuron

FS

FAS

P

sensory hairs

FT

BAS

leg movement

foot down

backward angle sensor

BS

backward swing

motor neuron

Question: artificial insect

In this model of insect leg control, the ‘backward swing’ (BS) motor neuron is primarily excited by:

a) backward angle sensor (BAS)

b) forward swing (FS) motor neuron

c) forward angle sensor (FAS)

d) pacemaker (P) command neuron

ANSWER: c) forward angle sensor (FAS)

MCB 419 Exam II practice questions

question action selection
Question: action selection

Given the following set of conditions: TRUE:daytime, hungry, near_food, antenna_contact

FALSE: food_in_mouthwhich action would be selected by the following Matlab code?

if (daytime)

wander;

end

a) wander

b) swallow_food

c) follow_edge

d) food_chemotaxis

if (hungry && food_in_mouth)

swallow_food;

elseif (antenna_contact)

follow_edge;

elseif (near_food && hungry)

food_chemotaxis;

end

ANSWER: c) follow_edge

MCB 419 Exam II practice questions

question vertebrate brain organization
Question: vertebrate brain organization

ANSWER: b

  • Which structure is the optic tectum?

d

c

b

a

MCB 419 Exam II practice questions

question vertebrate brain organization6
Question: vertebrate brain organization
  • The optic tectum is part of the:a) hindbrainb) midbrainc) diencephalond) telencephalon

ANSWER: b) midbrain

MCB 419 Exam II practice questions

question hierarchical organization
Question: hierarchical organization
  • In the rat defense system, the neural circuitry primarily responsible for mediating a startle response to a loud noise would be found in the:a) hindbrainb) midbrainc) diencephalond) telencephalon

ANSWER: a) hindbrain

MCB 419 Exam II practice questions

question toad predator prey system
Question: toad predator-prey system

square

The neuron to the right responds best to large ‘square’ and ‘anti-worm’ stimuli. Responses to ‘worm’ stimuli are not very sensitive to stimulus size. A neuron like this would most likely be found in:

a) retina

b) spinal cord

c) thalamus

d) tectum

anti-worm

worm

2 4 8

ANSWER: c) thalamus

MCB 419 Exam II practice questions