Part 2: Read the example experiments below and indicate which of the following i

Question

Part 2:

Read the example experiments below and indicate which of the following invasive research techniques would be most appropriate to use: (a) electrical stimulation methods, (b) recording methods, (c) lesion methods, or (d) genetic techniques. Explain your choices for each example in a sentence or two.

1. A graduate student wants to determine whether damage to the amygdala will affect memory of a fear-inducing situation (an encounter with a predator) in rats.

2. A senior scientist is investigating whether walking across a balance beam is associated with activity in the frontal lobe of the cerebral cortex in young mice.

3. An undergraduate is assisting with a study that is investigating how inducing activity in neurons of the hippocampus might affect performance on a spatial navigation test in rats.

4. A government research team has created a mouse that lacks a certain type of dopamine receptors, which are coded for by the DRD4 gene, in order to determine whether these receptors are necessary for the addictive effects of cocaine.

Explanation / Answer

(a) electrical stimulation methods: 3. An undergraduate is assisting with a study that is investigating how inducing activity in neurons of the hippocampus might affect performance on a spatial navigation test in rats.

sense in nurons move along the nerve in the form electricicty

(b) recording methods: 2. A senior scientist is investigating whether walking across a balance beam is associated with activity in the frontal lobe of the cerebral cortex in young mice.

The changes are being recorded across the balance beam

(c) lesion methods: 1. A graduate student wants to determine whether damage to the amygdala will affect memory of a fear-inducing situation (an encounter with a predator) in rats.

It is just like describing the effect of damaged structure

(d) genetic techniques: 4. A government research team has created a mouse that lacks a certain type of dopamine receptors, which are coded for by the DRD4 gene, in order to determine whether these receptors are necessary for the addictive effects of cocaine.

Genes control the activity of an organism. If a perticular gene is missed, the corresponding activity also dissapears.

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