1. The overrepresentation of sound frequencies between 60 and 62 Hz in the Doppler-shifted constant frequency area of a bat's auditory cortex reflects the importance of echolocation for discrimination of the: (a) size of an object. (b) (c) (d) relative velocity of an object. distance of an object. biological significance of an object (prey vs. non-prey). None of the above 2. Explain your answer for number 1.

1. The overrepresentation of sound frequencies between 60 and 62 Hz in the Doppler-shifted constant frequency area of a bat's auditory cortex reflects the importance of echolocation for discrimination of the: (a) size of an object. (b) (c) (d) relative velocity of an object. distance of an object. biological significance of an object (prey vs. non-prey). None of the above 2. Explain your answer for number 1.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter41: Sensory Systems

Section: Chapter Questions

Problem 2TYK

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1) Which of the following best describes a mechanism that helps us locate how far to the left or right a sound in our environment is coming from? certain neurons fire when input from the left and right ear reaches them at the same time neurons in the area postrema fire differentially based on relative volume differences rate coding (namely, the relative distance a sound is from the left or right ear affects the rate of firing) There does not need to be any difference in neural firing; we can just tell where a sound is coming from based on where it SOUNDS like it s coming from! 2) A retinal photoreceptor (rod/cone) is relatively ________ in the dark. Then when light hits it, it gets ________ . depolarized; hyperpolarized hyperpolarized; more hyperpolarized depolarized; more depolarized hyperpolarized; depolarized
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Research suggests that newborns are able to discriminate their own language from a foreign language, and their mother's voice from a stranger's voice. In contrast, their visual abilities are much less developed at birth, and develop rapidly over the first few months of life. One explanation for this is: A) Fetuses get equivalent auditory and visual experience before birth, but before they are born they are only able to learn from auditory experience B) Fetuses do not experience sensory information before birth (i.e., they cannot hear, see, smell, etc.) but language develops faster than vision because it is more evolutionarily important C) Fetuses get equivalent auditory and visual experience before birth, but vision requires additional postnatal triggers to be fully activated D) Fetuses can hear many types of sounds prenatally but have limited visual experience until after birth.