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Higher Mental Functions of the Brain: Language01:10

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Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
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Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
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The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
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犬の語彙処理のための神経機構

A Andics1, A Gábor2, M Gácsi3

  • 1MTA-ELTE Comparative Ethology Research Group, Eötvös Loránd University, H-1117 Budapest, Pázmány Páter sátány 1/C, Hungary. Department of Ethology, Eötvös Loránd University, H-1117 Budapest, Pázmány Páter sátány 1/C, Hungary. MR Research Centre, Semmelweis University, H-1083 Budapest, Balassa u. 6, Hungary. attila.andics@gmail.com.

Science (New York, N.Y.)
|September 1, 2016
PubMed
まとめ

犬は人間のように 単語の意味と音調を 切り離して処理できます 彼らの脳は 言葉の意味とトーンに 異なる領域を示し 両方一致すると 報酬が活性化され 言語に依存しない進化を示唆しています

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科学分野:

  • 比較認知
  • 神経科学
  • 動物の行動

背景:

  • 人間の言語処理は 辞書 (言葉の意味) と 音調 (音調) のシグナルを統合するものです
  • 比較研究は 認知能力の進化的起源を理解するために不可欠です
  • 非ヒトの動物におけるこれらのメカニズムを調査することで 進化の軌道を洞察できます

研究 の 目的:

  • 犬の脳が語彙的・音声的情報を 分離し統合するかどうかを調査する.
  • 犬の聴覚処理の ニューラル基盤を探るため
  • 言葉の意味と口調を処理する能力が 話し言葉とは独立して 進化するかどうかを判断する.

主な方法:

  • 機能性磁気共鳴画像 (fMRI) を用いて,犬の脳活動を研究した.
  • 犬は様々な語彙の内容と 音調のパターンを伴う 聴覚刺激にさらされた.
  • 異なる聴覚信号の処理に関与する脳の領域を特定することに焦点を当てました

主要な成果:

  • 音調に関係なく 意味のある言葉を処理する際に 左半球のバイアスが観察されました
  • 音声で表記された言葉と表記されていない言葉を区別する 脳の右の聴覚領域が特定されました
  • 主要な報酬領域は,語彙情報と語音情報の両方が賞賛を伝えるときに活動が増加しました.

結論:

  • 犬の脳には 単語の意味と発音を 分別的に分析する 神経機構があります
  • これらの発見は 複雑な言語がなければ これらの聴覚的シグナルを分離し統合する能力が 進化することを示唆しています
  • これは非言語的哺乳類における 人間の言語処理の 潜在的進化的前身を示しています