Including: question, answer, textbook page reference, and answer explanation. This is also a great examination preparation resource! My final mark for PYC1501 was 94%!
Note: This assignment is compulsory. You must submit this assignment to gain examination
admission.
Please choose the correct option in each question.
QUESTION 1
The term spatial summation refers to . . .
1. the deactivation of neurotransmitters by the enzymes in the synaptic cleft
2. the effect of impulses from different neurons arriving at the same synapse to reinforce a post-
synaptic potential
3. increased frequency of a neuron firing that triggers the release of neurotransmitters into the
synaptic cleft
4. the effect of successive impulses in the same axon to reinforce a post-synaptic potential
Answer 2
Reference A Student’s A-Z of Psychology: page 73
Explanation Spatial summation occurs when a postsynaptic potential is reinforced by action
potentials from the terminals of several axons reaching the same synapse at
more or less the same time. The action potential is reinforced because more
of the neurotransmitter is released and accumulates in the synaptic cleft
strengthening the postsynaptic potential.
QUESTION 2
The function of the . . . lobe is to help people recognize elements of an object in the visual field and
integrate them into meaningful patterns.
1. frontal
2. temporal
3. parietal
4. occipital
Answer 4
Reference A Student’s A-Z of Psychology: page 79
Explanation Frontal lobe: controls voluntary movements, production of speech
Temporal lobe: deals with auditory information and perception of sound
Parietal lobe: deals with sensory information like touch, pain, and temperature
Occipital lobe: integrates visual elements into a meaningful whole
QUESTION 3
Which of the following statements about noradrenaline is correct?
1. Noradrenalin is released by the sympathetic nerves and speed up the metabolism and the
release of glucose into the blood
2. A lack of noradrenalin leads to the decline in cognitive functioning seen in Alzheimer’s
disease
3. Noradrenalin is involved in the experience of pleasure and suppression of pain
4. Noradrenalin is associated with an increase in heart rate and contraction of blood vessels
Answer NO CORRECT ANSWER
(Make your lecturers aware of this by emailing them at pyc1501@unisa.ac.za)
Reference A Student’s A-Z of Psychology: page 74 - 75
Explanation Option 1 refers to adrenalin (epinephrine)
Option 2 refers to acetylcholine
Option 3 refers to endorphin
Option 4 refers to adrenalin (epinephrine)
2
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