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Related Concept Videos

The Auditory Ossicles01:11

The Auditory Ossicles

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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...
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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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Auditory Pathway01:15

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
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Space Trusses01:25

Space Trusses

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A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
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State Space Representation01:27

State Space Representation

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The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
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Space Trusses: Problem Solving01:29

Space Trusses: Problem Solving

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A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
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Updated: Feb 13, 2026

Barnes Maze Testing Strategies with Small and Large Rodent Models
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How the Barn Owl Computes Auditory Space.

Benedikt Grothe1

  • 1Division of Neurobiology, Department Biology II, Ludwig-Maximilians-Universitaet Munich, Martinsried, Germany; Max Planck Institute of Neurobiology, Martinsried, Germany.

Trends in Neurosciences
|March 4, 2018
PubMed
Summary
This summary is machine-generated.

Barn owls use unique anatomy to create an internal map of sound locations. These findings established the barn owl as a key model for understanding auditory spatial processing.

Keywords:
barn owlcomputational mapsinteraural disparitiessound localization

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Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Sensory Systems Research

Background:

  • Understanding auditory spatial processing is crucial for deciphering sensory systems.
  • The barn owl (Tyto alba) possesses unique cranial and facial structures that facilitate precise sound localization.

Purpose of the Study:

  • To investigate the neural mechanisms underlying auditory spatial representation in barn owls.
  • To elucidate how anatomical specializations contribute to the perception of sound in three-dimensional space.

Main Methods:

  • Behavioral experiments measuring sound localization accuracy in barn owls.
  • Electrophysiological recordings to map neural responses to auditory stimuli in different spatial locations.

Main Results:

  • Knudsen and Konishi (1979) demonstrated a systematic relationship between auditory input and neural representation of space.
  • The study identified specific neural circuits and anatomical features critical for auditory spatial mapping.

Conclusions:

  • The barn owl's auditory system provides a powerful model for understanding sensory processing and neural computation.
  • This research laid the groundwork for future studies on auditory spatial perception and neural representations of space.