SENSATION AND PERCEPTION
HEARING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It doesn’t show causation in the way neurons fire at their base point
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It doesn’t explain in enough detail how the transmitters get into the brain and fire signals
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It doesn’t explain how pitch and tone can fire at the same rate
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Neurons cant fire faster than 1000 times per second
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Detailed explanation-1: -This theory falls short as a neuron cannot fire at a rate that is larger than 500 impulses per second, thus would only account for lower pitch sounds. The higher-pitched sounds, according to this theory, thus could not be heard because a single neuron cannot fire at a fast enough rate.
Detailed explanation-2: -The stronger the input to a neuron, the quicker that neuron fires. But neurons don’t fire in an independent manner. “Neurons are connected and entangled with many other neurons that are also transmitting electrical signals.
Detailed explanation-3: -The key to synchronization They found that at high firing rates, the neurons started to loosely synchronize and fire together at the same time.
Detailed explanation-4: -This theory has a problem with high-pitched sounds, however, because the neurons cannot fire fast enough. To reach the necessary speed, the neurons work together in a sort of volley system in which different neurons fire in sequence, allowing us to detect sounds up to about 4, 000 hertz.
Detailed explanation-5: -Maximum neural firing rates According to physiologyweb.com, absolute refractory periods tend to be 1-2ms and relative refractory periods tend to be 3-4ms. This implies than neurons are generally not capable of firing at more than 250-1000 Hz.