Articles tagged with Sound Perception
Researchers discovered the brain's brief 'dual tracking' ability to process two conversations simultaneously, potentially explaining why some individuals excel in busy social situations. This finding may help improve hearing technologies and provide insight into why certain people struggle with multitasking.
Bats use ultrasonic voices to perceive their surroundings with remarkable precision, actively manipulating sounds to enhance important signals. By controlling echolocation calls, they create a 'silent frequency zone' that improves hunting success in noisy environments.
A new study suggests that many animal communication signals, including those from insects, birds, mammals, and fish, repeat at nearly the same tempo of 2 hertz. This common tempo may reflect a shared biological constraint, enabling brains to detect signals more easily and process communication more efficiently.
Researchers discovered that neurons in the brain's auditory cortex show large bursts of activity tied to specific moments in a task, suggesting a deep connection between behavior and sound processing. This 'tuning' mechanism enables the brain to produce smaller but more distinctive responses to sounds guiding task performance.
Researchers found that brain activity corresponds to perceived beat when listening to music via sound but not through touch. This ability is crucial for human social interactions through music and may be strengthened by long-term practice.
Researchers found that people process sounds differently when walking compared to standing or walking in place. The brain responds more strongly to sounds while walking, and this response changes depending on the direction of the walk.
Researchers at Macquarie University discovered that listeners adapt to the characteristics of acoustic spaces to improve their understanding of speech. The 'Goldilocks' zone of reverberation, around 400 milliseconds, optimizes learning and adaptation.
Researchers found that individuals with more severe depressive symptoms had difficulty learning to actively avoid aversive sounds, but their ability improved once they mastered the task. The study suggests that depressive symptoms may specifically interfere with learning to avoid unpleasant events rather than avoidance in general.
Researchers discovered a brain mechanism behind 'specific musical anhedonia,' where people experience no pleasure from music despite normal hearing and other experiences. Studies using the Barcelona Music Reward Questionnaire support this idea, showing reduced activity in the reward circuit when listening to music.
Scientists develop an ambisonic algorithm to simulate precise sound locations in 3D, reproducing sounds with high accuracy and precision. The AudioDome loudspeaker array achieves a spatial resolution comparable to human spatial acuity.
A study published in PLOS Biology found that repeated stress in mice reduces their ability to perceive loud sounds, as measured in the auditory cortex. This altered brain processing is reflected in a behavioral task where stressed mice were more likely to report louder sounds as soft.
A new article investigates whether auditory magic tricks can be created for a blind audience, finding that the brain processes visual and auditory information differently. This study underscores the importance of making magic more inclusive for people with blindness.
A new Reichman University study demonstrates how external representation of physiological signals can improve internal balance. The researchers created an immersive multisensory environment that mirrors the user's breathing pattern, leading to significant improvements in interoceptive sensibility and flow among users.
Researchers at Duke University have discovered that subtle ear sounds can be decoded to pinpoint where someone's eyes are looking. By analyzing these sounds, the team was able to estimate the movement of the eyes and predict what the waveform of the ear sound would look like.
Researchers found goalkeepers have narrower temporal binding windows, indicating more precise multisensory processing and quicker estimations of audiovisual cues. They also showed less interaction between visual and auditory information, suggesting a greater tendency to separate sensory signals.
A team of philosophers and psychologists found that people can literally hear moments of silence, producing the same auditory illusions as sounds. The study suggests that our brains treat silences similarly to sounds, blurring the line between hearing and absence.
VIRTUOSO, developed by Dr. Hyunkook Lee from the University of Huddersfield's Applied Psychoacoustics Lab, enables immersive 3D audio without loudspeakers through binaural technology powered by ASPEN. This technology simulates the ambience and reflections found in a room with headphones, allowing for accurate translation to real speakers.
Research found that sounds can influence how we perceive objects visually, making related sounds prioritize certain features. This effect was observed in three experiments, showing that audio input influences object-morph selection speed and accuracy when played during visual discrimination phase.
Conscious perception of sound generates specific neuronal assemblies in the brain, differing from spontaneous brain activity. Under anesthesia, similar assemblies are present but lack sound-specificity, highlighting the importance of cortical creativity in sensory processing.
A study published in Molecular Therapy — Methods & Clinical Development shows that delivering the protein EPS8 via gene therapy can rescue malfunctioning inner ear hair cells that transduce sound. In mice affected by recessive deafness, EPS8 increases stereocilia length and restores hair cell function.
Scientists have identified two areas of the auditory cortex specialized to recognize human voice sounds without linguistic meaning. These regions help react to sound cues allowing people to identify characteristics of the person speaking, such as gender, age, and height. This discovery sheds light on neurological disorders affecting vo...
Researchers found that despite a powerful brain response to sound during sleep, the level of alpha-beta waves associated with attention and expectation is significantly reduced. This means the brain can analyze auditory input but fails to focus on it, resulting in no conscious awareness.
The Collaborative Research Centre Hearing Acoustics is developing smart hearing aids that use artificial intelligence to adjust to different environments. The project, which aims to create more adaptable hearing devices, has received $8.1 million in funding for another four years.
A NTU Singapore study found that consumers associate higher-pitched commercials with healthier food products. The researchers also discovered a link between more stimulating visuals and consumer perceptions of healthiness.
A new generation of thin triple-pane windows has made significant strides in energy efficiency, cost, and availability. The latest research shows that these next-generation windows can improve the energy efficiency performance of windows by up to 40%, boosting the total insulating value of a home exterior.
Researchers investigated whether COVID-19 led to a worsening of tinnitus symptoms, but found no significant difference in severity. Despite this, the pandemic can exacerbate anxiety and stress, potentially affecting individuals with tinnitus.
A recent study found that headphones increase perceptions of closeness, warmth, and empathy, making listeners more easily persuaded. The research has significant implications for advertising, remote work, and training programs, suggesting that using headphones can be an effective way to create a sense of attachment with the listener.
Neurobiologists demonstrated that humans can unconsciously distinguish between even very similar sounds, but often don't recognize these differences. The study used EEG to measure brain responses to stimuli and found that the brain reacts differently to local and global irregularities in sound sequences.
Engineers at the University of Cincinnati are working on designing quieter drones and flying cars to minimize noise pollution. By manipulating sound through engineering design, they aim to create vehicles that are imperceptible in their environment, reducing disruptions to lower-income neighborhoods and daily life for millions.
A new study found that nearly four times as many words describing rough surfaces contain the trilled /r/ sound compared to smooth ones. This pattern is prevalent across sensory words in 38 Indo-European languages and has likely existed for over six millennia.
A new study from Pusan National University suggests that phonological awareness (PA) and phonics instruction can significantly improve the reading skills of English language learners. The meta-analysis of 46 studies found a moderate effect of PA and phonics on word reading, but a larger impact on pseudo-word reading.
Researchers found that dopamine stimulates female songbirds' preference for certain songs, affecting mating choice and memory. By manipulating dopamine levels, the team demonstrated lasting changes in song preferences, advancing our understanding of auditory perception.
Researchers uncover how sensory inputs and cognitive processes interact in the brain to create our perception of the world. The study explores the neural basis of perceptual phenomena, shedding light on disorders like ADHD, autism, and Alzheimer's disease.
A new study published in Current Biology reveals that visually impaired babies primarily use touch to respond to stimuli, while sighted babies rely more on auditory cues. The research suggests that both senses will be crucial in designing tools to aid their development.
Researchers at University of Toronto found that the brain's prefrontal cortex generalizes perceptual experiences from different senses, producing sensations even without direct experience. The study used functional magnetic resonance imaging and massage stones to capture neural activity patterns in the brain.
Researchers found that auditory and speech processing occur in parallel, with areas of the STG responding as fast as the primary auditory cortex when sentences were played. This challenges the traditional hierarchy model of speech processing and may offer new insights into conditions like dyslexia.
Researchers found that rhythm perception relies on two separate decisions: grouping and prominence, which are mutually informative. These decisions lead to our rhythmic intuitions, suggesting that speech processing involves complex inferences.
Researchers at Aalto University developed a new audio technique that allows people to track bats in flight and localise sources of ultrasonic sound, enabling super-hearing. The device records ultrasound using microphones on a small sphere, pitch-shifts the signal, and plays it back through headphones.
Researchers at McGill University found that brain signals constantly adapt to synchronize visual and auditory inputs, using temporal recalibration to adjust our sense of time. This dynamic process enables us to perceive sounds and images as simultaneous, despite the different physical velocities and neural processing speeds.
Echolocating bats use time-based distance estimates, regardless of air conditions. The study found that bat accuracy improved when closer to targets, suggesting an innate ability to discern surroundings in terms of time.
Researchers found that newborns' brains can process voice pitch but struggle with the spectral and temporal fine structure of sounds. The study's findings suggest that neural encoding of speech sounds develops over time, providing a potential biomarker for early detection of language impairments.
Researchers found that disrupting balance of gamma waves between hemispheres affects how brains integrate information from left and right ears. The study uses electric brain stimulation to manipulate interhemispheric connectivity, paving the way for new treatments for tinnitus and hearing loss.
Scientists identify a unique voice prosody pattern associated with honest speech, recognized across languages and influencing memory recall. The study, published in Nature Communications, reveals how brain automatically processes this characteristic sound to convey truth-value or certainty.
Researchers from RUDN University conducted a comprehensive study on how Russian speakers differentiate between similar consonants in the Greek language. They found that Russian speakers associate certain Greek sounds with specific Russian sounds, contradicting traditional linguistic borrowings.
A recent study by California Polytechnic State University found that exposure to recorded birdsong can significantly improve humans' sense of well-being, especially in protected areas. The researchers discovered that even short periods of time spent listening to birdsong can have a positive impact on mental health.
Researchers used headphones to change sound of footsteps in real-time, finding participants walked faster with high-pitched sounds. Exposure to lemon-scented essential oils combined with high-pitched sounds made participants feel lighter than those exposed to vanilla scents.
The Acoustical Society of America will hold its 179th meeting entirely online from December 7-11, bringing together interdisciplinary groups of scientists to discuss their latest research. The conference includes sessions on COVID-19, sound and smell, and more.
Two studies by Aalto University show that minor sound fluctuations make identifying concert halls difficult. The research highlights the importance of considering both acoustic parameters and musical timbre in understanding concert hall acoustics.
A new Ohio State University study found that people can't completely ignore how someone looks or sounds, even when told to do so. This has implications for racial stereotyping, as participants were more careful to avoid showing bias when evaluating accents, but not when judging physical attractiveness.
Researchers at McMaster University found nearly 90% of sounds used in auditory experiments have no connection to the natural world. This discovery raises questions about the use of artificial tone beeps in testing the auditory system, highlighting their limitations and potential impact on real-world applications.
Researchers created a collection of unique songs with manipulated acoustic information, demonstrating the left and right hemispheres handle speech and melody differently. fMRI scans revealed asymmetrical neural activity, with speech content primarily processed in the left auditory cortex and melodic content in the right.
Researchers from the University of Basel found that adding white noise to a quiet environment improves the brain's ability to distinguish subtle tone differences. This is achieved through reduced neuronal activity in the auditory cortex, allowing for more precise sound perception and potentially improving cochlear implant results.
Researchers from UNIGE found that harsh sounds between 40-80 Hz stimulate the brain's aversion networks, activating salience and pain centers. This explains why humans are drawn to these frequencies, which are also used in alarm systems.
A study by Universidad Carlos III de Madrid reveals that olfactory and auditory stimuli can alter our perception of body shape. Exposure to certain smells, like lemon, makes people feel thinner, while others, such as vanilla, make them feel heavier.
Researchers at the University of Zurich and others identified two perceptually distinct sounds in chestnut-crowned babbler calls that are shared across different arrangements. The findings suggest that these elements are meaningless and may be an early step in the emergence of human language.
Researchers identified two distinct sound elements in chestnut-crowned babbler calls that are shared across different arrangements and convey no specific meaning. The findings suggest that the capacity to generate meaning from meaningless building blocks is widespread in animals, similar to human language construction.
Researchers found that people perceive themselves as lighter when smelling lemon and heavier when smelling vanilla. The study suggests that technology could be used to develop new therapies or wearable technologies that utilize scent to enhance self-confidence.
The new ISO TS 12913 standard provides a framework for identifying optimal dining spaces, including binaural sound recording for immersive evaluation. Restaurants present a challenge due to varying noise levels, but the guidelines address this with psychoacoustics and diner feedback.
Research suggests that innate auditory perception skills play a significant role in shaping the neural encoding of speech during music training. Volunteers with higher musical listening abilities exhibited enhanced neural encoding of speech cues, comparable to those with extensive formal music training.
Research highlights the negative impact of hospital noise on communication, patient rest, and recovery, as well as staff performance and burnout. The authors propose a new approach to addressing noise pollution, prioritizing SPL reduction and involving patients in its creation.