10 votes
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Why is sensory substitution not that successful?

Bach-y-Rita's Tactile Vision Substitution System (TVSS) project was initiated in 1963 and he has since been regarded as the founding father of sensory substitution. The concept of sensory substitution ...
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9 votes

Is it possible that people perceive time differently than others do?

Short Answer Yes. People estimate time differently, by focusing their attention on time in more or lesser degree. Also within a person, time estimation may vary due to stochastic variations. Long ...
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7 votes

Long term effect of using noise generators

Short answer Yes, continuous exposure to white noise affects neural responses in the auditory system. First, it can alter the tonotopic map in the auditory cortex. Second, it can lead to reduced ...
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7 votes

If the color black reflects no light, how are we able to see it?

Objects are visually perceived when they reflect light. A black object does not reflect any light. In other words, no photons are reflected to be detected by the photoreceptors in the retina. A black ...
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7 votes

How does the inner ear encode sound intensity?

Short answer Hair cells in the cochlea can code sound intensity via the amount of neurotransmitter they release. Higher sound levels result in more neurotransmitter release and in turn to higher ...
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7 votes
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What are the temporal limits of the auditory system?

As far as I know, auditory clicks are the shortest possible auditory stimuli. The shortest auditory click I was able to find in the literature, and which was used in a psychophysical context (i.e., ...
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6 votes
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aftereffects of auditory adaptation

The most well known sensory after effect illusion in the auditory system is probably the Zwicker tone (Zwicker, 1964). If a white noise with a half‐octave‐band suppression placed anywhere from 300 ...
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6 votes

What are the temporal limits of the auditory system?

In terms of the shortest stimuli, the auditory system can process acoustic impulses, but defining the duration of an impulse is problematic. As the duration of the impulse gets shorter, the bandwidth ...
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5 votes
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What regulates the strength of motor signals?

Short answer Muscles are controlled by motor neurons in the spinal cord. The number of motor neurons that fire, as well as their individual firing rates govern the control of muscle force. Background ...
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5 votes
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Difference between thoughts and sensations

Short answer Sensations are different from thoughts and are separated in the spatial and temporal domain. The distinction between thoughts and perceptions, however, is less well defined, but can still ...
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5 votes

Is there a standard definition of a "hallucination"?

Elliot et al. (2008) define a hallucination as: A sensory experience which occurs in the absence of corresponding external stimulation of the relevant sensory organ, has sufficient sense of reality ...
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5 votes
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How does the brain project pain on to a particular part of the body?

Short answer Peripheral sensory information is projected unidirectionally to the brain. A sensory strip of the brain contains a topographical representation of the surface of the body that facilitates ...
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5 votes
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Is V1 involved in visual imagery?

Short answer V1 can be recruited for visual imagery, but it is not strictly needed for imagery to occur, and it is not sufficient in itself to allow for visual imagery. Background Visual imagery is a ...
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5 votes
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Is there a difference between physiological stimulations and psychological stimulations?

Psychology and physiology are at different levels of explanation or levels of analysis. The answer depends entirely on how you view the relationship between such levels and in particular (mental) ...
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5 votes

Is "haptodysphoria" an urban legend or is there another term under which this studied?

Apparently "sensory over-responsivity" is a more widely used term: Sensory over-responsivity, a subtype of sensory modulation disorder, is characterized by extreme negative reactions to normative ...
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4 votes
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Can people with absolute pitch identify the exact frequency, or simply the pitch class?

Short answer In practice, absolute pitch is generally tested for by using musical pitch classes. Background Absolute pitch (AP) is the ability to identify the pitch of a musical tone, or to produce a ...
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4 votes

Any ideas about the neural mechanism underlying the ASMR sensation?

I found one study that looked at ASMR and the Default Mode Network (DNM). The DMN consists of the medial prefrontal cortex, medial temporal gyri, bilateral inferior parietal cortices, precuneus and ...
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4 votes
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How long does it take to learn to cane travel?

Short answer Generally, a few months of active, guided training. Background Based on an article from a guide cane instructor who is a cane traveler himself, I can answer the question as follows: ...
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4 votes

Difference between active and passive touch?

The difference is in whether the animal has voluntary control over the touch. If the animal touches another object by moving its body to initiate the touch, then the it is active touch. If the animal ...
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4 votes
Accepted

Does sensory deprivation affect cognitive abilities?

This is a really neat question. A strong predictor of cognitive ability is one's environmental enrichment, or the stimulation of the brain in its physical and social surroundings. Those with sensory ...
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4 votes
Accepted

Do we perceive contrast colour patterns easily because of adaptation?

Short answer Contrast is hardwired in the visual system and can be explained by retinal and brain connectivities without the need for adaptive processes. My answer pertains to adaptation at the ...
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4 votes

Is our sense of smell heightened when we are asleep?

Short answer The sense of smell may still be operational during sleep, but it is not enhanced. Olfactory stimuli typically will not wake you up during sleep, however. Background Olfaction and sleep ...
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4 votes

I have developed a self-regulation system that allows change at the physiological level. Does it have any merit?

I'm not going to answer the question I think you want answered: whether your system has merit. Instead, I'm going to answer a related question that I think you actually need answered: How do you ...
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3 votes

Why does your recorded or objective voice sound different to what you hear in your own head?

There are two sound pathways by which we hear: bone conduction and air conduction. The air conduction pathway involves vibrations in the air being transmitted from the ear drum, through the bones of ...
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3 votes

Long term effect of using noise generators

There is some cool evidence (e.g., Canlon et al. 1988) that low level noise exposure can actually protect you against high level noise exposure. That said, I am not sure that one should constantly ...
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3 votes

What causes the sensation of taste when Dimethyl Sulfoxide (DMSO) is absorbed through the skin?

Short answer It may not be so much the direct action of DMSO on the olfactory sensory system, but the smell of one of its metabolites that is excreted via the pulmonary system and the skin after ...
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3 votes

Why is sensory substitution not that successful?

Chris gave an excellent answer for visual-to-tactile sensory substitution devices. I will not argue about the extent to which sensory substitution is successful, but the most widespread sensory ...
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3 votes
Accepted

Is there knowledge of the receptive field patterns of cortical columns in associative brain regions?

Short answer Associative brain areas are not retinotopically organized. Only lower visual areas more upstream from these areas are organized in such a predictable, low-level way. Higher up, things get ...
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