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Related Concept Videos

Perception of Sound Waves01:01

Perception of Sound Waves

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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Perceiving Loudness, Pitch, and Location01:21

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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.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
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Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
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Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Auditory Perception01:17

Auditory Perception

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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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Sound Intensity Level00:53

Sound Intensity Level

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
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Related Experiment Video

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Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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Cultural Differences in Perceiving Sounds Generated by Others: Self Matters.

Liyu Cao1, Joachim Gross1

  • 1School of Psychology, University of Glasgow Glasgow, UK.

Frontiers in Psychology
|December 24, 2015
PubMed
Summary

Cultural differences impact sensory attenuation, the brain’s reduced response to predictable sensory input. Chinese participants showed sensory attenuation for others’ actions, unlike British participants, suggesting cultural influences on self-perception and social processing.

Keywords:
cross cultural differencesforward modelself-construalsensory attenuationtop–down modulation

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Area of Science:

  • Cognitive Neuroscience
  • Cross-Cultural Psychology
  • Auditory Perception

Background:

  • Sensory attenuation, a reduction in perceived sensory intensity, typically occurs for self-generated stimuli due to distinct neural processing.
  • Existing research presents conflicting findings regarding sensory attenuation for stimuli generated by others across different cultural contexts.

Purpose of the Study:

  • To investigate cross-cultural differences in sensory attenuation for auditory consequences generated by self, others, and an external source.
  • To explore the relationship between cultural background, self-construal, and sensory attenuation.

Main Methods:

  • A cross-cultural study comparing Chinese and British participants.
  • Participants evaluated the perceived loudness of auditory consequences from self-generated actions, actions by others, and external (computer-generated) stimuli.
  • Correlational analyses were performed with independent self-construal scores and delusional ideation.

Main Results:

  • Chinese participants exhibited sensory attenuation for sensory consequences generated by others, while British participants did not.
  • The sensory attenuation effect for self-generated stimuli was not consistently replicated across groups.
  • Sensory attenuation for others' actions in Chinese participants correlated with independent self-construal; delusional ideation correlated with findings in British participants.

Conclusions:

  • Cultural factors significantly influence the processing of sensory consequences generated by others, impacting sensory attenuation.
  • Independent self-construal may play a role in the observed cross-cultural differences in sensory attenuation.
  • Further research is needed to elucidate the complex mechanisms underlying sensory attenuation and its cultural modulation.