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関連する概念動画

Optimal Foraging00:48

Optimal Foraging

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How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
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Nonconscious Mimicry01:13

Nonconscious Mimicry

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Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
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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...
331
Elaborative Rehearsals01:07

Elaborative Rehearsals

85
Elaborative rehearsal is a crucial cognitive strategy that strengthens information encoding in long-term memory by making meaningful connections between new data and pre-existing knowledge. This approach contrasts with maintenance rehearsal, which involves simple repetition without delving into the significance of the information. While maintenance rehearsal might temporarily keep information active in short-term memory, it is less effective for long-term retention.
The effectiveness of...
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Echo01:06

Echo

505
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
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Perception of Sound Waves01:01

Perception of Sound Waves

4.4K
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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関連する実験動画

Updated: Jun 25, 2025

Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication
10:28

Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication

Published on: June 5, 2016

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カラス は 自分 の 発する 声 の 数 を "数える"

Diana A Liao1, Katharina F Brecht1, Lena Veit2

  • 1Animal Physiology, Institute of Neurobiology, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany.

Science (New York, N.Y.)
|May 23, 2024
PubMed
まとめ

カラスは,数値的な能力と声のコントロールを示し,シグナルに基づいて特定の数の発声 (1〜4) を生み出すことができます. 彼らの発声は 計数中に計画とエラーの検出を示唆しています

科学分野:

  • コグニティブ・エソロジー
  • 動物とのコミュニケーション
  • 比較心理学について

背景:

  • 有意義な発音を出すには 数学的なスキルと 声のコントロールが必要です
  • 人間以外の動物に そのような能力があるかどうかは 未知の事実です

研究 の 目的:

  • カラスに 柔軟で数値制御された声の 生産能力があるかどうかを調べる
  • カラスが任意のヒントを 特定の発声数と関連付けられるかどうかを調べるため

主な方法:

  • カラスは数値 (1〜4) と結びついた任意の視覚的なヒントを提示されました.
  • カラスが信号に反応して発する声は記録され 分析されました
  • 個々の発声と配列の音響的特徴は認知プロセスを推論するために調査されました.

主要な成果:

  • カラスは 提示されたシグナルに対応する 1〜4つの声の配列を 柔軟に生成します
  • 最初の発声の音響特性により シーケンス全体の長さが予測され 計画が示唆されました
  • 音声単位の音響特徴は 配列内の位置を示し 数字の誤りを明らかにした.

結論:

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  • カラスは数値的な能力と 声のコントロールを 洗練しており 意図的な発音を 生み出すことができます
  • この発見は カラスが数えるように 声の配列を計画し 誤差を監視することを示唆しています