Articles tagged with Auditory Perception
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A new study found that non-Hispanic blacks have the best hearing thresholds among three major ethnic groups in the US, with Mexican Americans falling in between. The median hearing levels of U.S. adults have not changed significantly since the early 1970s, despite increased noise sources.
Researchers developed a mathematical model of the cochlea that shows its spiral shape enhances low frequency sounds, increasing sensitivity by up to 20 decibels. This finding could lead to improved cochlear implants and better hearing outcomes.
A team at the University of Bristol has created microphones based on the structure of a locust's eardrum, allowing them to detect extremely faint sounds. By studying the nanoscale movements of an insect's hearing system, researchers have gained insights into developing tiny sensors that can analyze sound frequencies.
A Mayo Clinic study found that patients with rheumatoid arthritis have preserved hearing and are no more susceptible to hearing loss than those without the disease. However, rheumatoid arthritis patients were more likely to perceive they had hearing problems due to their disability level.
A new study from the University of Michigan Medical School found that a particular surgical procedure, the middle cranial fossa (MCF) approach, can preserve hearing in patients with small acoustic neuromas. The study examined 73 patients and reported a high rate of success, with three-quarters retaining useful hearing after tumor removal.
A Yale University study found that older individuals' age stereotypes can predict their sensory perception, with negative and external stereotypes linked to worse hearing outcomes. The study of 546 people aged 70 and older suggested that social psychological factors, such as age stereotypes, may influence hearing decline.
Researchers found a direct link between aldosterone levels and the ability to hear normally as people age. Lower blood levels of aldosterone are associated with severe hearing loss, suggesting that the hormone plays a role in maintaining good hearing.
Researchers found that age has little predictive value for postoperative performance with cochlear implants in elderly patients. Instead, residual hearing capacity and language abilities appear to be key determinants of success.
A Hopkins study found that cochlear implants can prevent and even reverse damage to the brain's auditory nerve system in cats. The research supports earlier implantation of devices in young children born deaf, as it minimizes complications and maximizes hearing restoration success.
A new study found that pediatricians frequently neglect to follow up on children who fail initial hearing screenings, leaving them without necessary treatment. This can lead to delayed diagnosis of hearing loss and potentially irreversible language delays in young children.
The study used repetitive triplet sequences of tones with alternating frequencies to explore how the brain perceives auditory streams. The researchers found that at intermediate frequency separations and speeds, listeners' perceptions shifted from a single stream to two separate streams.
Researchers at Emory University Health Sciences Center discovered the PCP pathway's role in shaping cochlea and hair cells. The study reveals that mutations in this pathway impact hearing and offers new insights into developing hearing restoration therapies.
A new study published in The Lancet found that newborn screening for childhood hearing impairment leads to increased referrals before 6 months of age, ultimately contributing to better language and speech development. Early intervention programs can also mitigate deficits in children with bilateral PCHI.
Researchers at Michigan Medicine have found that over half of patients with rapidly progressing hearing loss had antibodies against IESCA, a protein in the inner ear. The study suggests a direct test for antibodies could predict which patients will regain hearing with steroid treatment.
A new guide from the Better Hearing Institute provides parents with tools to recognize and address hearing loss in children, which can impact academic performance and development. The guide offers treatment options and resources for parents to overcome stigma associated with hearing aids.
Research suggests that trained meditative practices can alter perception and influence the conscious experience of visual perceptual rivalry. Monks practicing 'one-point' meditation showed major increases in durations of perceptual dominance, indicating improved ability to focus their minds.
Researchers have found TRPA1 to be present in stereocilia of hair cells, crucial for both sound detection and balance. This dual role suggests that TRPA1 may play a key role in pain sensation, particularly in response to noxious stimuli.
A nationwide collaboration of transplant specialists is reviewing kidney allocation guidelines, soliciting public input, and exploring changes to improve patient access and outcomes. The review process aims to balance justice, utility, and efficiency in the allocation system.
Researchers, led by Daniel Eberl, studied the Myosin VIIA gene in fruit flies to understand deafness. They found that this gene is essential for hearing in both fruit flies and humans. This discovery will help scientists design experiments to test specific mechanisms of hearing.
A study of 237 children who underwent ear tube placement surgery at ages 5-16 months found that their hearing levels remained comparable to age-matched normal ears. The number of abnormal outcomes decreased over time, and repeated surgeries were more common in those with more serious conditions.
A wearable captioning system developed at the Georgia Tech Research Institute allows users to customize captions in any venue that provides captioning. The system relies on mobile wireless technology and can transmit multiple text streams, making it potentially useful for language translation as well.
A study by University of Toronto researchers found that orchestra musicians are not at risk of hearing loss in the pit, despite playing for long hours. However, individual practice and measures such as earplugs can still help protect their hearing.
As we age, our brain's ability to filter out background noise and sort information affects our hearing. Researchers have found a 'feedback' problem in the brain that diminishes our ability to hear, particularly in older adults who experience age-related hearing loss.
Researchers analyzed Al-Sayyid Bedouin Sign Language (ABSL), a community of 3,500 deaf and hearing people, revealing a distinct grammatical structure that establishes systematic relations among words. ABSL follows a Subject-Object-Verb order, differing from English and other languages in the region.
Researchers at UT Southwestern Medical Center successfully implemented Universal Newborn Hearing Screening, reducing the number of false positives and increasing follow-up rates. Rescreening infants four hours after birth improved outcomes, while providing outpatient retesting encouraged parents to return for further evaluation.
Tributyltin oxide (TBT) affects the mechanical activity of outer hair cells, which boost incoming sound energy to inner hair cells. The study found rapid and profound effects of TBT on outer hair cell membrane chloride ion exchange.
A study found that exposure to anger, negative emotions, or sudden changes in body position can increase the risk of stroke by up to 14 times within two hours. The study examined 200 people with ischemic strokes and found a link between these triggers and stroke, potentially offering new avenues for prevention and intervention.
Researchers have discovered a long-sought protein called TRPA1 that converts sound into nerve impulses, transmitting to the brain. This breakthrough could lead to new treatments for deafness and balance disorders in the next five to ten years.
A Université de Montréal study reveals that early- and late-onset blind subjects excel in spatial hearing tests, distinguishing sounds from ambient noise. This improvement may stem from increased time spent developing the sense of hearing and compensatory cortical adaptations.
Researchers found that newborn babies' right ears are more responsive to speech-type stimuli, while their left ears are more responsive to tonal sounds. This suggests that the auditory system develops differently on each side of the brain from birth.
Researchers studied fossil whales and found significant changes in their ear anatomy, which enabled them to transition from a land-based to a marine-based existence. The new sound transmission system allowed modern cetaceans to locate prey using echolocation, making it crucial for survival.
Researchers at University College London found that humans use a strategy similar to barn owls for sound pitches above middle-C, while gerbils adapt to detect low-pitched sounds. The study suggests the brain adopts an efficient strategy to locate sound sources, adapting to different frequencies.
Research found that altering steroid hormone levels enhances a complex auditory system in female midshipman fish. The discovery suggests that estrogen hormones may play a role in shifting the sensitivity of the auditory system to prioritize social stimuli.
Researchers at the University of Washington have discovered that a spike in hormone levels can induce changes in female fish's hearing sensitivity, allowing them to detect higher frequencies. This neural plasticity may affect all vertebrates and could have implications for human hearing loss.
Researchers found female patients with Wolfram syndrome have significantly worse hearing than male patients. The study also discovered that USH2a patients' hearing loss gradually deteriorates over time.
A researcher has identified a genetic abnormality affecting American DFNA9 syndrome patients also present in Dutch families, including BOR syndrome, leading to valuable insights into the progression of diseases. The discovery highlights the importance of gene matching research for identifying new candidate genes.
Jonathan I. Lunine, a renowned planetary scientist, will testify before the President's Commission on Implementation of U.S. Space Exploration Policy about detecting other Earths around nearby stars. He suggests developing medium-sized optical and infrared space telescopes, the Terrestrial Planet Finder, which could discover habitable ...
University at Buffalo researchers have created an innovative animal model to study tinnitus treatment, allowing them to monitor individual neurons in the brain during phantom sound perception. The model, developed with a $167,000 grant, enables researchers to measure changes in neural activity before and after inducing tinnitus.
Researchers have discovered the role of cadherin 23 protein in the mechanotransduction process that converts sound waves into electrical signals. The study provides insights into Usher syndrome and age-related hearing loss, suggesting a potential therapeutic target for treating deafness.
Researchers found that hormone replacement therapy (HRT) can lead to poorer hearing performance in women, especially in noisy environments. The study involved 32 women who had received HRT and compared their hearing with 32 women who had not.
Researchers found that gradual exposure to frequency-shifted sounds improved subject's ability to comprehend speech in cochlear implants. Brain scans revealed systematic changes in cortical responses after several hours of exposure.
A massive gene-comparison project found evidence of positive selection in genes involved in the sense of smell, digestion, long-bone growth, hairiness, and hearing. The analysis also suggested that humans may have an advantage in understanding speech due to genetic differences in hearing genes.
A massive gene-comparison project found evidence of positive selection in genes involved in olfaction, smell perception, and hearing. This suggests that lifestyle changes, such as the shift from a plant-based diet to meat-eating, drove the evolution of unique human traits.
Researchers at Michigan State University have identified a gene mutation linked to hearing loss, which could lead to new insights into the biology of progressive hearing loss. The discovery is expected to provide new avenues for preventing or treating this common health issue, affecting an estimated 28 million Americans.
Researchers found that a mutated fruit fly gene controlling hearing produces similar consequences in humans, including hearing loss and limb deformities. The study suggests that hearing may have evolved earlier than previously thought, linking human genetics to those of fruit flies.
A three-year study found that low-dose methotrexate had no effect on maintaining restored hearing in patients with autoimmune inner ear disease (AIED). Researchers are now focusing on alternative treatments for this rare condition.
Researchers discovered that sensory cells in mouse inner ear develop rapidly between days 16 and 17 of gestation, mirroring human fetal development. Understanding this process is crucial for regenerating sensory hair cells in the human ear.
The video doctor program uses a computer-based multimedia approach to provide personalized advice on reducing smoking and alcohol use. Patients who interacted with the video doctor showed positive responses, but still preferred consultation with real doctors.
Researchers found that musicians remembered music better when they heard it during learning, regardless of whether they heard the music when replayed it later. This contradicts matching theories and suggests that auditory feedback plays a crucial role in music memory.
A team of researchers found that the absence of a specific gene, Ink4d, causes progressive hearing loss in mice by triggering the death of sensory hair cells. This finding suggests that humans with similar genetic mutations may be more susceptible to hearing loss due to trauma.
Researchers have identified three genes, Myosin VIIa, Harmonin, and Cadherin 23, that cooperate to shape the sensory hair cell bundle. These findings provide new insights into Usher syndrome, a genetic disorder affecting vision and hearing.
Researchers have identified a new human hearing loss gene, TMIE, in deaf mice, which may lead to the development of a screening test and therapy for families affected by inherited hearing loss. The discovery brings scientists closer to understanding the intricate choreography of genes and proteins involved in human hearing development.
A new compound is being developed to target specific types of hearing loss, with the goal of repairing and regrowing injured or damaged auditory hair cells. The treatment aims to prevent hearing loss by bolstering the inner ear's antioxidant defenses and may offer hope for some patients with sudden hearing loss.
Researchers found that 6-month-old hearing infants consistently preferred American Sign Language to pantomime. The infants spent more time looking at ASL than pantomime, even when given the freedom to look elsewhere. This study expands on previous findings of infants' sensitivity to spoken language and may indicate a universal preferen...
A new test simulates real-world noise to evaluate children's binaural hearing abilities, which affects learning and concentration in noisy environments. The test assesses how well children can separate competing sounds, with results showing varying ability levels among children.
A landmark study published in Nature reveals that deaf and hearing adults who experienced language in early life perform similarly well in learning a new language later in life. Deaf adults with little language experience show low levels of performance, whereas those with early experience demonstrate high proficiency.
A significant proportion of elderly people in the UK experience poor hearing, with around a quarter failing a whispered voice test. The study highlights challenges in improving detection and management of reduced hearing, as well as increasing ownership and use of hearing aids.
A new study reveals that specific subdivisions of the auditory cortex play a crucial role in identifying fine distinctions in pitch. The research found that subtle manipulations in the brain's response to complex tones can significantly impact our perception of musical nuances.
Researchers found that babies exposed to signed language produce distinct hand movements with low-frequency rhythmic activity, indicating an innate sensitivity to linguistic patterns. This discovery suggests that parents' sing-song way of speaking and playful rhyming games can aid the language learning process.
A recent court decision requiring all North Carolina speech-language pathologists to hold a master's degree may lead to a 13% workforce loss in the state's public school system. The shortage could exacerbate caseloads, particularly for students with autism and growing demands for early intervention services.