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Brain-computer interface could decode inner speech in real time

Scientists have successfully decoded inner speech using brain-computer interfaces (BCIs) with an accuracy rate of up to 74%. The BCI system can interpret neural activity related to thought processes, allowing individuals with severe paralysis or motor impairments to communicate more naturally and comfortably.

SourceCell Press·JournalCell·TypeExperimental study·DateAug 14, 2025

Some people could sound angrier when complaining, new study finds

Researchers found that speakers from different cultures convey emotions differently when complaining. Complainers use specific vocal expressions to convey negativity, with Québécois sounding more angry and French speakers sounding sadder. The study highlights the importance of tone of voice in social interactions and may have implicati...

SourceFrontiers·JournalFrontiers in Communication·TypeExperimental study·DateJul 22, 2025

Baby talk – a human superpower?

A study by researchers from the University of Zurich found that humans are the most frequent users of child-directed speech among five species of great apes. However, non-human great ape infants may acquire language through surrounding communication and gestures, similar to human children.

SourceUniversity of Zurich·JournalScience Advances·TypeExperimental study·DateJun 25, 2025

Scientists map neural wiring of vocal circuits in songbirds

Researchers have mapped the long-range synaptic connections involved in vocal learning in zebra finches, uncovering new details about how the brain organises learned vocalisations. The study provides a framework for understanding how the brain integrates sensory and motor information to guide learned vocal behaviour.

SourceeLife·JournaleLife·DateMar 18, 2025

AI-driven tool for distinguishing Lewy body dementia via changes in vocal emotional expression

A new AI-driven tool can accurately diagnose Lewy body dementia by analyzing changes in vocal emotional expressions. The study found that individuals with Lewy body dementia exhibited more negative and calmer emotional expressions compared to those with Alzheimer's disease and healthy controls.

SourceUniversity of Tsukuba·JournalAlzheimer s & Dementia Diagnosis Assessment & Disease Monitoring·DateJun 4, 2024

Italians’ and Swedes’ gestures vary when they tell stories, which may show cultures think differently about narratives

Italian speakers gesture more frequently than Swedes when retelling a story, using pragmatic gestures to present new parts of the narrative. Swedes instead rely on representational gestures to convey events and actions, indicating differing rhetorical styles and ways of conceptualizing narratives.

SourceFrontiers·JournalFrontiers in Communication·TypeObservational study·DateMar 26, 2024

Brain recordings in people before surgery reveal how all minds plan what to say prior to speaking

A new study reveals that pauses in speech can provide information about how people's brains plan and produce speech. The research found that neighboring brain regions play a crucial role in speech planning, with longer latencies corresponding to planning and shorter latencies indicating physical mechanics of speaking.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalBrain·TypeExperimental study·DateMar 19, 2024

Languages are louder in the tropics

Researchers analyzed a large database of languages to verify the relationship between climate and language sound. They found that languages around the equator tend to have higher sonority indexes, but some exceptions exist, such as Mesoamerica and Mainland Southeast Asia.

SourcePNAS Nexus·JournalPNAS Nexus·DateDec 5, 2023

Different areas of the brain activated depending on structural complexity of music, language

Research from UTHealth Houston reveals that different brain regions are engaged when processing simple versus complex melodies and sentences. The study used intracranial electrodes to map brain activity during music and language tasks, finding shared temporal lobe activity but distinct sensitivities to melodic and syntactic complexity.

Chimpanzees combine calls to communicate new meaning

A study by the University of Zurich found that chimpanzees understand and respond strongly to combined calls, which they use to recruit group members in threatening situations. This discovery sheds light on the potential evolutionary origins of language's compositional structure, suggesting it may be at least 6 million years old.

SourceUniversity of Zurich·JournalNature Communications·TypeObservational study·DateMay 4, 2023

Vocal tract size, shape dictate speech sounds

Researchers found that anatomical variations in a speaker's vocal tract affect speech production, with factors such as horizontal and vertical length, head inclination, and hard palate shape influencing vowel frequencies. The study suggests that understanding anatomy is crucial for producing speech.

SourceAmerican Institute of Physics·JournalThe Journal of the Acoustical Society of America·DateMar 21, 2023

Singing supports stroke rehabilitation

A recent study at the University of Helsinki found that singing-based group rehabilitation can increase communication and speech production in stroke survivors, while also reducing social isolation. The study's results suggest that this type of rehabilitation could be a valuable addition to existing aphasia treatment protocols.

SourceUniversity of Helsinki·JournalBrain Communications·DateDec 28, 2022

Speaking your mind: patients' speech can reveal type of dementia

A study published in Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring found that analyzing patients' speech can distinguish between different types of dementia. The research team developed a machine learning model using speech features to identify Alzheimer's disease and Lewy body dementia.

SourceUniversity of Tsukuba·JournalAlzheimer s & Dementia Diagnosis Assessment & Disease Monitoring·DateNov 3, 2022

Clashes of inference and perspective explain why children sometimes lose the plot in conversation

Research by University of Cambridge academics found that children as old as five or six struggle to reconcile inference and perspective, leading to difficulties in conversations. Combining these skills is crucial for understanding 'implicatures' - inferences made in conversation when people mean more than they say.

SourceUniversity of Cambridge·JournalLanguage Learning and Development·DateJun 29, 2022

Strengthening speech networks to treat aphasia

Aphasia affects 80,000 people annually in the US, causing difficulty speaking and understanding language. Researchers at Brown University have developed a therapy to strengthen speech networks using guided speech and repetition exercises. Early testing with four patients showed improved precision and reduced errors.

Feeling your words: Hearing with your face

Researchers find that stretching facial skin during speech affects perceived sound, linking production and perception. The study contributes to understanding the relationship between speech perception and production.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateJan 23, 2009

Essential tones of music rooted in human speech

Researchers at Duke University found that music tones correspond to the same numerical ratios as human speech frequencies. The study suggests that our ears favor these relationships due to exposure through everyday speech. This discovery may explain why certain tuning schemes sound more natural, like just intonation.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateMay 24, 2007