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Psychology questions

1) In the lock-and-key model of synaptic transmission, the "key" gets to the "lock" how? Is it by removal of synaptic vesicles, rapid conduction down to the axon, weak attractive forces of the lock, or diffusion across the cleft?

2) Which of these are transducers? Eardrum, the jnd, hair cells.

3) Which of the following would be likely to produce the most profound reduction of cortical arousal? Damage to the connections between the cortex and the subcortical systems, destruction of both the parasympathetic and sympathetic divisions of the autonomic nervous system, prolonged deprivation of REM sleep without deprivation of slow-wave sleep, or chronic addiction to amphetamines?

4) Which brainwaves characterize the deeper stages of sleep? Those that are high voltage/low frequency, high voltage/high frequency, low voltage/low frequency, low voltage/high frequency

5) According to drive-reduction theory, what is intrinsically awarding about sex? Is it the innate reinforcing quality of sexual stimulation and orgasm, the satisfaction that comes from innate need to reproduce, the rise in tension that occurs during sexual stimulation, or the removal of tension after orgasm?

6) What is the main goal of psychophysics? Is it to relate physical intensity of stimuli to neuronal functioning, to understand the processes of transduction, to understand how psychological processes can result in physical actions, or to relate the properties of stimuli to attributes of sensation?

7)If a psychologist asserts that a certain animal's sense of vision is more sensitive than its sense of hearing, what does that mean? The animal's absolute threshold for vision is lower than its absolute threshold for hearing, the animal's difference of threshold for vision is smaller than its difference threshold for hearing, the animal's Weber fraction for vision is smaller than its Weber fraction for hearing, or all three?

8) When the visual system sharpens fuzzy boundaries by creating sharp boundaries where physically, none is present, what is this effect exemplified by? Is it the brightness contrast, the stabilized image, the mach bands, or both the brightness contrast and the mach bands?

9) At what level of the visual system do frogs' so-called bug detectors operate? Is it at the level of the receptors, at the level of the ganglion cells, at the level of the superior colliculus, or at the level of the visual cortex?

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1) In the lock-and-key model of synaptic transmission, the "key" gets to the "lock" how?

Is it by removal of synaptic vesicles, rapid conduction down to the axon, weak attractive forces of the lock, or diffusion across the cleft?

Answer: diffusion across the cleft

Communication from neuron to neuron happens primarily by way of neurotransmitters. These are chemicals released at the terminals of one neuron that cross the synaptic gap and affect receptor molecules located on the postsynaptic membrane. Neurotransmitter diffuses across synaptic cleft.

2)Which of these are transducers?

Eardrum, the jnd, hair cells.

Answer: Eardrum

A transducer is a device to convert sound to electrical energy or vice versa.

The ear drum is the first transducer in the ear.

3)Which of the following would be likely to produce the most profound reduction of cortical arousal?

Damage to the connections between the cortex and the subcortical systems, destruction of both the parasympathetic and sympathetic ...

Solution Summary

Answers questions on the topics of lock-and-key model of synaptic transmission, transducers, cortical arousal, brainwaves that characterize the deeper stages of sleep, drive-reduction theory, main goal of psychophysics, sense of vision, visual system sharpens, visual system of frogs, bug detectors.

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