Psychology Answers

The phenomenon of Rapid Eye Movement (REM) occurs during...

1. D-sleep, in which dreams usually occur

2. Phase 2 of sleep, whereby brain wave frequencies are mixed

3. Phase 3 of sleep, which atonomic activity shows down

4. S-sleep, in which delta brain waves are synchronized

Which term refers to the condition of breathing difficulties during sleep, whereby an individual wakes up gasping for breath and then goes back to sleep?

1. Insomnia

2. Catalepsy

3. Sleep apnea

4. Narcolepsy

The contrast between two poles of a neuron is called....

1. An action potential

2. Potential difference

3. Resting membrane potential

4. A postsynaptic potential

Which of the following illustrates the correct sequence of events in the process of synaptic transmission?

1. Nerve impulse stimulates the terminal bouton - Neurotransmitter diffuses across synaptic cleft - Vesicles attach to presynaptic membrane

2. Nerve impulse stimulates the terminal bouton - Transmitter deactivated by bouton - Electrical changes in receiving cell

3. Nerve impulse stimulates the terminal bouton - Neurotransmitters attach to receptors - Neurotransmitters cross synaptic cleft

4. Nerve impulse stimulates the terminal bouton - Vesicles attach to the membrane - Neurotransmitters are released - Neurotransmitters attach to receptors on postsyanaptic membrane

The opening through which one neuron communicates with another neuron is known as the...

1. Threshold

2. Channel

3. Synaptic cleft

4. Membrane

Which neurotransmitter is associated with an increase in heart rate and contraction of blood vessels, skeletal muscles and heart muscles?

1. Acetylcholine

2. Serotonin

3. Adrenaline

4. Endorphin

The process whereby an impulse moves much faster by jumping from node to node when travelling through the myelin sheaths is called....

1. Myelination

2. Frequency

3. Strength and speed

4. Salutatory conduction

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

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

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