Scientists are experimenting with new technologies that could help people with missing limbs. In one investigation, electrodes implanted in the nervous tissue of a monkey were connected to an artificial hand. The monkey's nervous system was able to direct the artificial hand to move. The below image shows the monkey raising a piece of zucchini to its mouth using the thought-controlled robotic are (A). a. Using a flowchart, illustrate the basic neural pathway from the sensory stimulus to the motor output. b. What are some other potential applications for this technology? c. Do the benefits to human life justify this form of animal research?
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- Let’s examine a neural pathway that involved three (3) neurons in sequence: one propagates an action potential from threshold stimulus of receptor to spinal cord; second propagates action potential superiorly to brain stem; and third propagates action potential from brain stem to part of cerebral cortex involved in perceiving the stimulus. Which of the following is correct classification of these neurons: a. all three are presynaptic b. first is presynaptic, other two are postsynaptic c. first and second are presynaptic, third is postsynaptic d. first and second are presynaptic, second and third are postsynaptic e. all three are postsynapticYou identify a new neuron in the fruit fly's brain and find it contains acetylcholine. 1) Based on this identification, this neuron is (a) Excitatory, (b) Inhibitory, (c) Neither excitatory nor inhibitory, or (d) Either excitatory or inhibitory 2) Briefly explain your answer above. 3) How would you figure out your answer above? Briefly describe an experiment you would do. Edit Format TableWhen expert pianists listen to familiar, well-practiced music, they imagine the finger movements, and the finger area of their motor cortex becomes active, even if they are not moving their fingers (Haueisen & Knösche, 2001). If we regard those neurons as another kind of mirror neuron, what do these results imply about the origin of mirror neurons?
- 15) Examine the diagram of a reflex arc shown below. In this case, pain from tissue damage to the hand results in a response where muscles move the hand away from the painful stimulus. ST. gridld.doi vd ehow or2 1o notelvib dot Figure 38-10 Biology; Life on Earth, 8/e © 2008 Pearson Prentice Hall, Inc. barostin 20 a) On the diagram above, label the motor neuron, the sensory neuron, the interneuron, and the effector. b) List any way or ways in which the nervous system will determine the intensity of the pain the example above. Corobral cortexCentral nervous system (CNS) and peripheral nervous system (PNS) are two systems innervous system that control human movement and activity.(a) Describe the pathway of receiving and transferring information in neuron.a) Describe the behavior of an unaffected neuron sitting at its membrane resting potentialstimulated by a suprathreshold stimulus.b) Now, add the effects of the consumption of the Fugu toxin and stimulate that neuron with a supra-threshold stimulus.- Describe (and/or diagram) the effect on the membrane potential by supra-thresholdstimulation under this condition.c. Using any ONE (1) of the following three (3) means we have used to interpret the resultingmembrane potential for a neuron, describe the effect of the Fugu toxin on a neuron:i) Goldman’s equationii) “Driving” toward Ex of most permeable ioniii) Movement/flow of charge + charges
- Neurons are highly specialized cells whose form matches their function. They are highly elongated cells that conduct [Select ] a. ["electrical", b. "chemical"] signals across large distances, and [ Select ] ["chemical", b. "electrical"] a. signals across tiny spaces between neurons called [ Select ] a. ["hillocks", b. "Summations", c. "synapses"] . Neurons use vast amounts of energy to maintain the [Select] a. ["polarization", b."resting membrane potential", c. "action potential through the actions of [ Select ] a. ["sodium-potassium pumps", b."voltage-gated sodium channels", c."voltage-gated potassium channels"] . In doing so both sodium and potassium are trafficked against their concentration gradients leading to high concentrations of sodium [Select ] a. ["inside" , b. "outside"] the cell, and high concentrations of potassium [ Select ]Somatic sensory and somatic motor information are propagated via specialized neurons. If you dip your toes in a hot tub before entering the tub, the action potentials generated by the water temperature travels via which of the following structures before it can be perceived by you? O unipolar neurons from the toes to the spinal nerve, ventral root, spinal cord, thalamus, primary somatosensory cortex O unipolar neurons from the toes to the spinal nerve, dorsal root, spinal cord, thalamus, primary somatosensory cortex O multipolar neurons from the toes to the spinal nerve, ventral root, spinal cord, thalamus, primary somatosensory cortex O multipolar neurons from the toes to the spinal nerves, dorsal root, spinal cord, thalamus, primary somatosensory cortexSingle cell recordings in the dorsal stream (parietal areas) tell us about the mechanisms involved in action control. All of the following is true, EXCEPT: a. All listed here are correct b. Neurons in different parietal areas support the link between gaze-centered neurons area to the body-centered neurons c. Some neurons signal whether to move eyes and some neurons signal whether to move hands d. Some neurons in the anterior intraparietal area respond to 3D shapes that vary in size/orientation, but not to 2D shapes e. Some neurons respond based on the position of an object in relation to the hand f. Neurons in the parietal cortex are allocentric and they exhibit activity that reflects learned movements
- Cell bodies of UMN that synapse on LMN lie in all of these areas EXCEPT a) Medulla b) Thalamus c) Pre-motor cortex Pons d) Primary motor cortexWhich of the following describe the myelination of the nervous system correctly? Please select all that apply. A) Caudal structures are myelinated before rostral structures. B) Myelination of the human central nervous system is not complete until around the age of 25 years. C) Sensory systems are myelinated before motor systems in the cerebral cortex. D) Myelination at different ages is not very predictive of behavioral differences.Applying a pressure stimulus to the fluid-filled capsule of an isolated Pacinian corpuscle causes a brief burst of action potentials in the afferent neuron, which ceases until the pressure is removed, at which time another brief burst of action potentials occurs. If an experimenter removes the capsule and applies pressure directly to the afferent neuron ending, action potentials are continuously fired during the stimulus. Explain these results in the context ofadaptation.