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Related Concept Videos

Auditory Perception01:17

Auditory Perception

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 cochlea, a...
Convergent Evolution01:54

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
The Auditory Ossicles01:11

The Auditory Ossicles

The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
Resonance and Hybrid Structures02:16

Resonance and Hybrid Structures

According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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 identifying...

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Related Experiment Video

Updated: Jun 12, 2026

fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
11:15

fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals

Published on: May 23, 2017

Collective Acoustics in Pan: Conserved Roots in the Evolution of Human Musicality.

James Brooks1,2,3, Zanna Clay4, Valérie Dufour5

  • 1Cooperative Evolution Lab, German Primate Center, Göttingen, Germany.

American Journal of Primatology
|May 28, 2025
PubMed
Summary

Exploring the evolutionary origins of music, this study examines collective acoustics in chimpanzees and bonobos. Understanding great ape vocalizations is key to unlocking the precursors of human musicality and its social functions.

Keywords:
bioacousticsbonobochimpanzeecollective behaviorjoint callingmusicality

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Last Updated: Jun 12, 2026

fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
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Published on: May 23, 2017

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Infant Auditory Processing and Event-related Brain Oscillations

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Area of Science:

  • Evolutionary biology
  • Ethology
  • Bioacoustics

Background:

  • Human musicality is a complex trait with deep evolutionary roots.
  • The precursors and conserved origins of musicality in non-human primates, particularly great apes, remain under-explored.
  • Collective acoustics, the simultaneous vocalizations by multiple individuals, offers a potential window into these origins.

Purpose of the Study:

  • To evaluate the existing literature on chimpanzee (Pan troglodytes) and bonobo (P. paniscus) behavior relevant to the evolution of musicality.
  • To assess the empirical evidence for prominent evolutionary theories of human music, such as social bonding and credible signaling.
  • To identify critical research gaps in understanding great ape collective acoustics and its implications for human musical evolution.

Main Methods:

  • Systematic literature review of behavioral studies on chimpanzees and bonobos.
  • Analysis of studies focusing on simultaneous acoustic signal production in these species.
  • Comparative evaluation of empirical data against theoretical frameworks for music evolution.

Main Results:

  • The literature on collective acoustics in great apes, while limited, provides relevant data for evolutionary theories of musicality.
  • Recent theories on music's role in social bonding and credible signaling can be partially assessed using existing ape behavioral data.
  • Significant gaps exist in empirical data concerning the nuances of great ape collective vocal behavior.

Conclusions:

  • Further empirical research on great ape collective acoustics is crucial for understanding the evolutionary trajectory of human musicality.
  • Investigating the functional significance of coordinated vocalizations in apes may illuminate the adaptive pressures that shaped human music.
  • Comparative studies of great ape vocal behavior are essential for reconstructing the deep evolutionary history of music.