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Related Concept Videos

Attribution Theory00:56

Attribution Theory

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Behavior is a product of both the situation (e.g., cultural influences, social roles, and the presence of bystanders) and of the person (e.g., personality characteristics). Subfields of psychology tend to focus on one influence or behavior over others. Situationism is the view that our behavior and actions are determined by our immediate environment and surroundings. In contrast, dispositionism holds that our behavior is determined by internal factors (Heider, 1958).
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Auditory Perception01:17

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
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The discussion of bullying highlights the problem of witnesses not intervening to help a victim. This is a common occurrence, as the following well-publicized event demonstrates. In 1964, in Queens, New York, a 19-year-old woman named Kitty Genovese was attacked by a person with a knife near the back entrance to her apartment building and again in the hallway inside her apartment building. When the attack occurred, she screamed for help numerous times and eventually died from her stab wounds.
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Related Experiment Video

Updated: May 17, 2025

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

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Temporal coherence effects on voice attribution in multi-speaker stream segregation.

Jaeeun Lee1, Andrew J Oxenham1

  • 1Department of Psychology, University of Minnesota, Minneapolis, Minnesota 55455, USAlee03881@umn.edu, oxenham@umn.edu.

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Temporal coherence in speech does not reliably segregate auditory streams. This study found no significant performance differences between coherent and incoherent speech conditions for normal-hearing listeners.

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Area of Science:

  • Auditory perception
  • Speech processing
  • Psychoacoustics

Background:

  • The principle of temporal coherence suggests that synchronized auditory streams are perceived as unified, while desynchronized streams are segregated.
  • Previous research using simple stimuli demonstrated temporal coherence's role in auditory stream segregation.
  • The applicability of these principles to complex auditory signals like human speech remains less understood.

Purpose of the Study:

  • To investigate whether temporal coherence influences auditory stream segregation in complex speech.
  • To test the prediction that temporally coherent speech forms a unified stream, while incoherent speech forms separate streams.

Main Methods:

  • Twenty normal-hearing listeners participated in the study.
  • Listeners identified the final word of a target talker's speech.
  • Stimuli involved temporally coherent or incoherent speech phrases preceding the target, or silence.

Main Results:

  • No significant differences in speech intelligibility or stream segregation performance were found between temporally coherent and incoherent speech conditions.
  • Listener performance did not differ significantly when compared to a silence control condition.

Conclusions:

  • The principle of temporal coherence may not generalize to complex auditory streams like human speech.
  • Further research is needed to understand auditory stream segregation with more complex acoustic stimuli.