Language Flashcards

1
Q

What is language?

A
  • A system for representing, communicating information about the world using symbols and rules.
  • Natural language vs Formal languages
  • Human language vs animal language
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2
Q

Formal languages

A

Finite systems of signs and rules for combination

  • Computer languages
  • Limited number of things that can be done compared to natural language
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3
Q

Human language vs animal languages

A
  • Bees, primates, cetaceans
  • Animals need to be able to communicate with one another
  • Closed/finite vs generative
  • Human language is capable of representing abstract concepts
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4
Q

Evolution of language groups

A
  • Over 6000 languages
  • Evolved from ancestral languages
  • Evolved from latin
  • Still see great similarities between languages
  • Ancestral language known as proto-languages
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5
Q

Functional component of languages

A
  • Articulation
  • Phonology
  • Meaning/sematics
  • Syntax
  • Comprehension
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6
Q

Articulation component

A
  • Movement of tongue, lips and jaw to modify a sound wave
  • Words are articulated due to precise movements of tongue, lips, jaw and pharynx, epiglottis to shape the column of sound formed by vocal cords.
  • Can produce many words because of the way in which this happens
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7
Q

How are sounds classified?

A

Based on place it is made.

Manner of articulation

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8
Q

Labial sounds

A

Touching the lips together

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9
Q

Alveolar/dental sounds

A

When the tongue presses against the top ridge, behind top teeth

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10
Q

Palatal sounds

A

Made by the tongue manipulating against the pharynx

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11
Q

Voiced vs unvoiced

A

The difference between p and b for example

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12
Q

What is fricatives?

A

Fricatives is the hissing/continous sound

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13
Q

Phonology

A

The sound combination from which the syllables and words of a language are built up.

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14
Q

What structures vary across languages?

A

Legal phonological structures varies across languages

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15
Q

Phonemes

A

Component of Syllables

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16
Q

What is the international phonetic alphabet?

A

Easier for people from different countries to have their own rules. Used as a common notation

17
Q

What is semantics?

A
  • Representation in long term memory of concepts and the relations between them
  • What they signify
  • Actions, objects and properties which are verbs, nouns and adjectives
  • Independent of grammer
  • Mapping through concepts and symbols is generally arbitrary
18
Q

What is the exception for semantics?

A

Onomatopoeia

19
Q

What is syntax?

A

The arrangement of words and phrases to create well-formed sentences in a language.
Relies on grammatical markers and word order.

20
Q

Comprehension

A

Ability to represent the meaning of words or sentences spoken or written by another person
Entails knowledge of all of articulation, phonology, meaning and syntax
Also needs context, pitch, stress and prosody

21
Q

What is prosody?

A

Patterns of rhythm and sound used in poetry

22
Q

Cerebral organisation of language

A

Dependent on left hemisphere network of cortical regions and white matter connections - known as the language network

23
Q

Left inferior frontal gyrus

A

Broca’s area - production of sentences

24
Q

Auditory cortex

A

Critical for understanding speech

25
Q

Anterior regions of temporal lobe

A

Important in representing meaning

26
Q

Wernicke’s Area

A

decoding incoming speech signal

27
Q

Arcutae Fasciculus

A

Connects anterior and posterior parts of language network together

28
Q

Articulation and phonology

A
  • Depend on inferior and opercula parts of motor homunculus
  • Control movements of tongue, mouth, larynx and epiglottis
  • Corresponds to anterior portions of Broca’s area
29
Q

Which region of the brain is responsible for meaning?

A
  • Highly dependent on left and right temporal poles
  • Dense interconnections of temporal poles and areas of association cortex where individual features of the world as we experience it are first registered and processed e.g connections with taste areas, sound features
  • Formed as modality independent representations
30
Q

Which region of the brain is responsible for syntax?

A
  • Dependent of frontal areas
  • Regions more posterior to Brodman’s area 44 and 45 complex
  • Possibly extending into insula
  • Left inferior frontal gyrus
31
Q

Which region of the brain is responsible for comprehension?

A
  • Primary auditory cortex: without being able to represent an auditory signal, you wouldn’t understand speech.
  • Temporal poles: to comprehend speech, need to understand the significance of the signals you are comprehending
  • Left inferior frontal gyrus: understanding syntactic elements
  • Arcuate fasciculus
  • Left posterior superior
  • Temporal gyrus
32
Q

Language change after a stroke

A
  • Broca’s Aphasia
  • Wernicke’s Aphasia
  • Conduction Aphasia
  • Adynamic Aphasia
33
Q

What is Broca’s aphasia?

A
  • Difficulty with articulation and phonolgy
  • Speech:
    • > Fragmented
    • > Distorted
    • > Halting
    • > Aggramatic
    • > Distorted grammatical structure
  • Comprehension:
    • > Preserved for words
    • > Reduced for sentences
  • Follows damage to:
    • > Broca’s Area
  • Typical pathologies:
    • > Middle cerebral artery infarction
    • > Haemorrhagic stroke
34
Q

What is Wernicke’s aphasia?

A
  • Receptive/sensory aphasia
  • Speech unnaturally fluent: usually contains meaningless phonological strings
  • Damage: to posterior regions of language networks
  • Typical pathologies: Penetrating brain injury, cerebral haemorrhage