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In one of the most viral Twitter stories of 2018, people listened to the same acoustically-degraded audio clip of a word, and hotly debated which was the correct word: laurel or yanny. What's the reason for the diametrically-opposed discrepancy? The poor quality of the audio, likely re-recorded multiple times, makes it more open to interpretation by the brain, says Brad Story, a professor of speech, language and hearing sciences at the University of Arizona. Primary information that would be present in a high-quality recording or in person is "weakened or attenuated," Story says, even as the brain is eagerly looking for patterns to interpret. "And if you throw things off a little bit, in terms of it being somewhat unnatural, then it is possible to fool that perceptual system and our interpretation of it," says Story. Story says the two words have similar patterns that easily could be confused. He carried out his own experiment by analyzing a waveform image of the viral recording and compared it to recordings of himself saying "laurel" and "yanny." He noticed similarities in the features of these words, which you can see below. Both words share a U-shaped pattern, though they correspond to different sets of frequencies that the vocal tract produces, Story explains. Britt Yazel, a neuroscience post-doctoral student at UC Davis, also provides more reasons for why people are hearing different things. Some people have greater sensitivity to higher frequencies or lower frequencies, Yazel says. "But not only that, the brains themselves can be wired very differently to interpret speech," he says. For example, if you hear the sounds in either "yanny" or "laurel" more in your everyday life, you might be more likely to hear them here. In other words, your brain may be primed and predisposed to hearing certain sounds, due to environmental exposure.

Does someone who was born with a hearing loss "hear" an inner voice? Several people who have experienced hearing loss have contributed to the discussion, and their responses make fascinating reading. First, why is the question of interest?

"American audiences will hear an accent and style surprisingly like their own in its informality and strong r-colored vowels... Meier said audiences will hear word play and rhymes that "haven't worked for several hundred years (love/prove, eyes/qualities, etc.)" Plus a sample video.

"In one 40-second clip, you can hear how "gaga" turned into "water" over the course of six months. In a video clip, below, you can hear and watch the evolution of "ball." .... Unreal 3-D visualizations allowed his team to zoom through the house like a dollhouse and map the utterance of each word in its context. In a landscape-like image with peaks and valleys, you can see that the word "water" was uttered most often in the kitchen, while "bye" took place at the door."

Individuals who are born deaf use the "hearing" part of their brain to feel touch and to see objects, suggests new research that highlights the plasticity of the human brain. The new study, detailed online July 11 in The Journal of Neuroscience, shows that deaf people use the so-called auditory cortex to process both touch and visual stimuli much more than hearing individuals do.

This month, the journal Pediatrics published a study that used functional magnetic resonance imaging to study brain activity in 3-to 5-year-old children as they listened to age-appropriate stories. The researchers found differences in brain activation according to how much the children had been read to at home. Children whose parents reported more reading at home and more books in the home showed significantly greater activation of brain areas in a region of the left hemisphere called the parietal-temporal-occipital association cortex. This brain area is "a watershed region, all about multisensory integration, integrating sound and then visual stimulation," said the lead author, Dr. John S. Hutton, a clinical research fellow at Cincinnati Children's Hospital Medical Center. This region of the brain is known to be very active when older children read to themselves, but Dr. Hutton notes that it also lights up when younger children are hearing stories. What was especially novel was that children who were exposed to more books and home reading showed significantly more activity in the areas of the brain that process visual association, even though the child was in the scanner just listening to a story and could not see any pictures. "When kids are hearing stories, they're imagining in their mind's eye when they hear the story," said Dr. Hutton. "For example, 'The frog jumped over the log.' I've seen a frog before, I've seen a log before, what does that look like?" The different levels of brain activation, he said, suggest that children who have more practice in developing those visual images, as they look at picture books and listen to stories, may develop skills that will help them make images and stories out of words later on. "It helps them understand what things look like, and may help them transition to books without pictures," he said. "It will help them later be better readers because they've developed that part of the brain

McDonald's swears up and down that the little yellow "Minions" Happy Meal toy is speaking only nonsense words and not something a little more adult. Experts say the company may be right, and the curse words many hear may be tied to how our brains are primed to find words even when they're not really there. "The brain tries to find a pattern match, even when just receiving noise, and it is good at pattern recognition," says Dr. Steven Novella, a neurologist at the Yale School of Medicine. "Once the brain feels it has found a best match, then that is what you hear. The clarity of the speech actually increases with multiple exposures, or if you are primed by being told what to listen for" - as most people who heard the toy online already had been. The technical name for the phenomenon is "pareidolia," hearing sounds or seeing images that seem meaningful but are actually random. It leads people to see shapes in clouds, a man in the moon or the face of Jesus on a grilled cheese sandwich.

"Mondegreen" means a misheard word or phrase that makes sense in your head, but is, in fact, entirely incorrect. Hearing is a two-step process. First, there is the auditory perception itself: the physics of sound waves making their way through your ear and into the auditory cortex of your brain. And then there is the meaning-making: the part where your brain takes the noise and imbues it with significance. That was a car alarm. That's a bird. Mondegreens occur when, somewhere between the sound and the meaning, communication breaks down. You hear the same acoustic information as everyone else, but your brain doesn't interpret it the same way.

The project, called Celebrating Indigenous Languages, is designed to honour the United Nations International Year of Indigenous Languages. Users of Google Earth are now able to hear over 50 Indigenous language speakers from across the globe saying words and simple phrases and even singing traditional songs.

It was especially interesting that this effect held not only for those who had been adopted after the age of 17 months, when they would have been saying some words, but also for those adopted at under 6 months.

Researchers looked at international adoptees (babies that were adopted at a couple months old and grew up hearing a different language than they heard while in the womb) and were able to see what babies hear in the womb and soon after birth has an affect on how they perceive sounds. Newborn babies can actually recognize the voices they've been hearing for the last three months in the womb, especially the sounds that come from their mothers. When born, babies prefer these familiar voices to strangers voices. Babies can also detect rhythm and prefer other languages with similar rhythms, rather than languages with different rhythms.

A team of researchers from Rice University and University of Maryland, College Park argue that it is more productive from a developmental perspective to describe spoken language as a special type of music. A review of existing studies presents a compelling case that musical hearing and ability is essential to language acquisition. In addition, we challenge the prevailing view that music cognition matures more slowly than language and is more difficult; instead, the researchers argue that music learning matches the speed and effort of language acquisition, and indeed, that "it is our innate musical intelligence that makes us capable of mastering speech." They conclude that music merits a central place in our understanding of human development.

The researchers of this study advance the idea that spoken language is introduced to the child as a vocal performance, and children attend to its musical features first. Without the ability to hear musically, it would be impossible to learn to speak. In addition, they question the view that music is acquired more slowly than language (Wilson, 2012) and demonstrate that language and music are deeply entangled in early life and develop along parallel tracks. Rather than describing music as a "universal language," they find it more productive from a developmental perspective to describe language as a special type of music in which referential discourse is bootstrapped onto a musical framework. Newborn infants' extensive abilities in different aspects of speech perception have often been cited as evidence that language is innate (e.g., Vouloumanos and Werker, 2007). However, these abilities are dependent on their discrimination of the sounds of language, the most musical aspects of speech. Music has a privileged status that enables us to acquire not only the musical conventions of our native culture, but also enables us to learn our native language. Without the ability to hear musically, we would be unable to learn language.

Suskind conducted close to 200 surgeries to install cochlear implants in the ears of children, to help them hear. Over the years, she came to see first-hand, in the operating room and X-rays, that hearing words vitalizes the brains of infants.

"But the "want you to listen; it's important" call gets threaded into almost every paragraph of the speech and amplified as the speech goes on. Clinton adds, among other asides, "Let me ask you something"; "Think about that"; "Let's think about it"; "I am telling you"; "Don't you ever forget"; "Wait, you need to know"; "You all need to listen carefully"; and perhaps the clincher, "You need to tell every voter where you live about this." It's a teacher's approach and more: It's the guy grabbing you by the shirt collar, demanding that you hear him and that you then go out and spread the Word."

"You, hear me! Give this fire to that old man. Pull the black worm off the bark and give it to the mother. And no spitting in the ashes!" It's an odd little speech. But if you went back 15,000 years and spoke these words to hunter-gatherers in Asia in any one of hundreds of modern languages, there is a chance they would understand at least some of what you were saying. That's because all of the nouns, verbs, adjectives and adverbs in the four sentences are words that have descended largely unchanged from a language that died out as the glaciers retreated at the end of the last Ice Age. Those few words mean the same thing, and sound almost the same, as they did then. While traditionally, it's been thought that words can't survive for more than 8,000 to 9,000 years, a team of researchers from the University of Reading has come up with a list of two dozen "ultraconserved words" that have survived 150 centuries. It includes some predictable entries: "mother," "not," "what," "to hear" and "man." It also contains surprises: "to flow," "ashes" and "worm." The existence of the long-lived words suggests there was a "proto-Eurasiatic" language that was the common ancestor to about 700 contemporary languages that are the native tongues of more than half the world's people.

Most parents try hard to protect their children from hearing swear words, and children are often punished or reprimanded when they use profane language. The federal government seeks to protect children from hearing swear words through censoring of language in TV shows (particularly during the "family hours").

This article notes the mutual dependence that both speech/language skills and literacy have on one another. This goes back to the fact that babies who hear more words from their parents often achieve more academically than those who don't converse with their parents as much. Learning anything requires some form of communication and interaction, and without an adequate level of communication, an individual can't learn as effectively.

(Jump to point 3). Children learn language through hearing, so making sure they have lots of things to listen to is critical. Toddlers whose mothers talked with them have bigger vocabularies.

Interesting article on how one's race and accent are related.

"This shows that our brain has a complex sensitivity to our own speech that helps us distinguish between our vocalizations and those of others, and makes sure that what we say is actually what we meant to say," Flinker says.... While the study doesn't specifically address why humans need to track their own speech so closely, Flinker theorizes that, among other things, tracking our own speech is important for language development, monitoring what we say and adjusting to various noise environments.