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The motion after-effect (MAE) is believed to be primarily due to adaptation of direction sensitive cells in the middle temporal area (MT) (Fig. 1.). The directional cells in this area of the cortex are selectively sensitive to motion in one direction. Hence, looking at a waterfall will selectively cause adaptation in those cells tuned to the direction of the ...


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To add to the good answer by @AliceD, take a look at some tuning curves for hair cells, the sound receptors in the cochlea (these happen to be fairly low frequencies and a turtle cochlea, though those details aren't all that important): Fettiplace, R. (1987). Electrical tuning of hair cells in the inner ear. Trends in Neurosciences, 10(10), 421-425. The ...


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Short answer No, there are no between-hair cell induced tonotopical gaps in frequency perception. Background Young people are able to hear over a frequency range of about 10 octaves, with a frequency resolution of about 0.3% of an octave. So we would have about 2300 resolvable frequencies. This number is dependent on the sound level, as excitation spreads ...


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How do we feel the tactile sensations when we touch our teeth The same way you feel tactile sensations when you tap a bicycle helmet on you head: the motion (or vibration) is transferred through the material to your head & the nerve endings in your scalp the same as tapping a tooth sends vibrations to the nerves in & at the base of the tooth.


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This is a more detailed answer about conceptual mechanisms from the same author as AliceD is citing: The first row represents the sensors (for instance photoreceptors) while the second row represents higher order responses (for instance of MT neurons). The latter's response is their resting level response plus the difference of the corresponding channel ...


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The Ishihara Color Test consists of plates containing one number. But that number may consist of two digits (Fig. 1). The plates may also contain one or two wiggly lines that have to be traced. So... Were there slides in the test that had two or more numbers, or was I hallucinating? There might have been two digits in the plate - you were not ...


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There are a number of pathophysiological mechanisms that are thought to underlie noise-induced hearing loss: Mechanical damage to the delicate cells and supporting structures of the organ of Corti; Reduced blood flow to the inner ear; Intense metabolic activity, which increases mitochondrial free radical formation. Reactive oxygen species (ROS) are highly ...


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Sorry for the late response.... I think the short answer is Game Theory. Obviously any colour scheme could in principle be used to signal toxicity. However, if a scheme was chosen that did not stand out it would not be an Evolutionary Stable Strategy (ESS). Let's take an example. Suppose a poisonous insect was coloured with green and brown markings. ...


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given a pen you can trace a line anywhere on your body. This is becasue humans have Proprioception. we can sense the movement of our muscles, tendons, and joints and track the location of every element of our body. Using this we can control our body precisely without other sensory input. It takes time to completely master this but most people have done so ...


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