1. An EEG measures electrical impulses generated by neuron on the cerebral cortex of the brain
2. Whilst the patient undergoing an operation is conscious, the surgeon, who has opened the cranium of the patient, can use a probe to stimulate areas of the Primary Somatosensory Cortex. If after a particular area has been stimulated, the patient feels some strange sensation in the hands, then it can be concluded that the area stimulated is responsible for the sensation in the hands
3. fMRI is not as invasive as ESB
4. PET can only detect function in the brain and CT can only detect structure in the brain. By combining them, it is possible to determine both structure and function of the brain.
5. a. Resistance
The answer may need a little explaining. The question is asking about the stage when she contracted the flu, not when she was collapsed and on the floor, which is where you could argue she was in exhaustion. The headaches could be a Alarm Stage response (the disappearance if which indicated the countershock stage)
b. She is around an environment where there is there is the flu pathogen around. Whilst she was in the resistance stage, she had multiple stressors, including being worked long hours, as well as not being around her son. Because of this she was unable to devote resources to being able to fight the flu pathogen, thus she fell ill with the flu.
c. Hypertension/High Blood Pressure/Ulcers
d. In stage three of GAS, the SNS has continued to stimulate the organs involve in the release of the stress hormones, including adrenaline and cortisol from from adrenal glands. In addition, it is stimulating release of sweat from the sweat glans (you can basically just add anything that the SNS would do under stress)
6. Sensory receptors (Thermoreceptors) in the right hand are stimulated by the heat of the glass. Action Potentials are then transferred from the receptors to the dorsal region of the spinal cord, and then transferred up the spinal cord into the Primary Somatosensory Cortex. Information is then sent to the Frontal Lobe, which is involved in reasoning, and, after decided it is too hot, information goes to the Primary Motor Cortex which then fires action potentials down to the hand to move the glass onto the table.
7. a. Proximity – Our brain groups the individual circles into two groups because the distance between the circles within the same group is shorter compared to the distance between the circles between the two different groups
b. Closure – The circles are positioned in such as way such that if the circles were connected by a line, it would form a circle. Our minds thus attempt to fill the gaps in between the circles to create the shape of a circle.
8. a. The father appears to shrink because there is a loss of depth cues, causing the rooms to appear rectangular because the edges of the back wall appear to be parallel, even though the back wall is actually slanted. As a result the retinal image casted by the father (or what the camera captures) is different depending on where the father is, even though our expectation is that they are at a same distance from the viewer.
b. If the camera were located in a different room, it would be able to see that the room is not rectangular, but trapezoidal. In particular, the person would be able to see that the back wall is slanted. Because of this gain in depth cues, the person would not see that father shrinking.
9. a. Interposition allows distance to be judged because in the natural world, an object that is in front of another object will obscure the back object.
b. Linear perspective works for mimicking the fact that as a line goes further and further, it appears to converge into a vanishing point.
10. a. absolute
b. differential
c. A person could start at a certain distance where the solder is able to see him. The person will then walk 1m from the starting position. The person will keep walking every 1m until the solder reports that he can no longer see him. This procedure can be repeated until an average score is calculated
11. a. i. Inability to remember his mother giving food and water to him
ii. Inability to keep track of time correctly.
b. i. EEG measurements taken may have indicated alpha waves
ii. Peter may have been sweating more than usual
12. a. i. EOG/EMG/EEG – you can pick any one of these
ii. EOG – High amplitude and frequency as there should be lots of movement in the eye
EMG – Should be almost flatlined as there should be no muscle activity in limbs during REM sleep (there’s a disorder where this is not the case)
EEG – Beta waves-like should be observed.
b. NREM Stage 4 or REM
13. a. It costs a lot of money to be able to find people, match them according to their characteristics and then divvy them up into your variable. Thus it would cost more money to conduct an experiment on a matched-participants design then it would independent-groups design.
(But you can also mention things like time as well)
b. Hand-eye coordination – Every year 9 student may have differing abilities in hand-eye coordination. Some students may be extremely coordinated, whilst others are not so uncoordinated. Thus the coordination of the student participants must be tested and matched to each group.
c. Dr Pradesh must write to each of the parents of the Year 9s stating the purpose of the experiment, what would happen in the experiment and any possible risk of doing an experiment. Dr Pradesh must then receive written permission by the participant’s parents before being able to let the student participate.
d. Increase likelihood of making mistakes on simple tasks, increased length of time needed to complete a task, more likely to be in a bad mood (display negative affect).
Home
Help
Search
Login
