Articles tagged with Vocalization
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Researchers found that Old World fruit bats produce bio-sonar clicks with their wings, enabling them to find their way in the dark. The ability is poorer than that of other echolocating species, but provides insight into how echolocation evolved over time.
A University at Buffalo researcher has found that mice can distinguish between partial sound waves, similar to how humans recognize word onsets. This discovery could help better understand human hearing loss and strengthen the use of mice as models for human communication.
Research on giant otters reveals a wide range of unique vocalizations used for communication. With 22 adult vocalization types and 11 neonate vocalization types, the study suggests an intricate relationship between vocalizations and social behavior.
Researchers found that infants with profound hearing loss who received cochlear implants reached vocalization levels of their hearing peers. This suggests that hearing is a critical aspect of motivation for making early sounds, and that auditory feedback plays a dynamic role in infant behavior.
Parents who engage with their infant's babbling can accelerate their child's vocalizing and language learning, according to a new University of Iowa study. Infants whose mothers responded to their babbling showed an increase in developmentally advanced vocalizations and began directing more of their babbling towards their mothers.
Researchers found Giant South American river turtles have a repertoire of vocalizations for different behavioral situations, including caring for young. The study reveals unique insights into their behavior, with female turtles using specific sounds to call to their newly hatched offspring and synchronize movements.
Babies start combining gestures with speech at 11 months, producing deictic gestures like pointing and reaching to inform, not command. This coordination is crucial for future linguistic abilities.
A study by University of York scientists has found that wild chimpanzees produce alarm calls intentionally to warn others of danger, similar to human language. The research suggests that language may have originated from a multimodal vocal-gestural communication system.
Researchers found that non-human primate vocalizations promoted object categorization in 3- and 4-month-old infants, similar to the effects of human speech. By six months, however, this effect disappeared, suggesting a specific link to human language has been established.
Researchers at Austria's Wolf Science Center found that wolves howl more when a wolf with a better relationship leaves the group and when that individual is high in social rank. The study suggests that howling is not solely a stress response but rather a flexible way to maintain contact and reunite with allies.
Scientists have found that mice can change the pitch of their ultrasonic vocalizations to match others in social exposure. This limited form of vocal learning suggests a capacity for learning not previously known in mice.
Researchers found that usually only three members of the group participate in the 'conversations', which help explain the group's ability to work together. The study also indicates how this behavior uses rumbles in a structured way to transmit signals, avoiding mass chaos at watering holes.
Researchers trained detection dogs to locate northern spotted owl pellets and feces, achieving a 87% detection probability compared to 59% for vocalization surveys. The cost-effective approach has potential as a complementary method for spotting owls in forests invaded by barred owls.
Wild chimpanzees make selective decisions about warning calls based on the information available to other group members. They voluntarily produce calls to inform unaware individuals of potential dangers, but not those who already know.
Egyptian fruit bats exhibit sophisticated spatial orientation using echolocation, adjusting their 'field-of-view' by altering sonar beam width and intensity in response to environmental complexity. This adaptability enables them to track targets and avoid collisions in dense environments.
A British study found that Westerners reliably recognized six basic human emotions through non-verbal vocalizations, but culturally isolated Himba people only recognized a subset of these emotions. The study highlights the importance of considering positive emotions in cross-cultural research.
A study found that young children and their caregivers utter fewer vocalizations, use fewer words, and engage in fewer conversations when television is on. The study discovered a significant reduction in child vocalizations, verbal interactions, and adult word counts with each hour of audible television.
A new assessment tool, Conditioned Assessment of Speech Production (CASP), monitors early auditory-guided speech development in infants and toddlers with hearing impairments. The five-minute procedure evaluates how closely a child's attempts match increasingly complex vocalizations.
A team of researchers found that high-frequency vocalizations in male mice are associated with approach behaviors and positive emotions, linked to dopamine and acetylcholine receptors. The study provides a new method for screening emotion genes and developing drugs for controlling emotions and mood disorders.
Researchers found that rhesus macaques increase grunts and girneys when interacting with babies, suggesting a way for females to elicit attention and encourage behavior in infants. These vocalizations may also facilitate interactions between females with babies, promoting social tolerance.
Scientists at Woods Hole Oceanographic Institution use ocean gliders to collect passive acoustic recordings of baleen whales, including right, sei, and humpback whales. The gliders' findings suggest a close correspondence between changes in sei whale calls and near-surface copepod abundance.
A team of researchers found that black-capped chickadees respond differently to variations in bird calls, including changes in pitch, order, and rhythm. The birds' reactions suggest a functional aspect to their vocalizations, which may serve purposes such as attracting mates or warning others of potential threats.
Researchers discovered that male mice produce ultrasonic calls with complex passages, syllable types, and regular time signatures, meeting the definition of song. The findings suggest that mouse song may approach that of many songbirds, opening new avenues for research into the genetic contributions to song and learning.
A study on young zebra finches reveals that dramatic degradation in song quality occurs after waking up from sleep, only to improve with morning rehearsal. Ultimately, better singers have poorer post-sleep deterioration of song development.