review

Core Domains and Components of Language

• Language is organized into three overarching dimensions: Form, Content, and Use.

• Form: The structural framework and mechanical rules governing language elements.

  • Phonology: The sound system of a language and the rules governing sound combinations.

  • Phonemes: The smallest distinctive linguistic units of sound that establish contrast and distinguish meaning between words.

  • International Phonetic Alphabet (IPA): The standardized alphabetic system used to accurately transcribe and represent speech sounds across spoken languages.

  • Morphology: The internal structural organization of words and the rules governing word formation.

  • Free Morphemes: Standalone grammatical units that carry meaning independently (e.g., base words).

  • Bound Morphemes: Grammatical units that cannot stand alone and must attach to other morphemes to convey grammatical or lexical function (e.g., prefixes, suffixes, grammatical markers).

  • Syntax: The structural rules determining word order, sentence structure, and the organization of phrases into well-formed sentences.

• Content: The meaning embedded within linguistic expressions.

  • Semantics: The study of linguistic meaning encompassing individual words, phrases, and connected discourse.

  • Lexicon: An individual's complete mental vocabulary and stored repository of word knowledge.

• Use: The functional and social application of language.

  • Pragmatics: The social rules and communicative principles directing how language is adapted to different contexts, conversational settings, and communicative intents.

Subsystems of Speech Production

• Respiratory Subsystem:

  • Governs the mechanical cycle of inspiration and expiration.

  • Relies on the diaphragm as the primary muscle driving respiration.

• Phonation Subsystem:

  • Driven by exhalation delivering aerodynamic energy through the larynx.

  • Creates voicing through the vibration and adduction of the vocal folds.

• Resonance Subsystem:

  • Regulates changes in acoustic sound quality as the voice propagates through the vocal tract cavities (pharyngeal, oral, and nasal cavities).

• Articulation Subsystem:

  • Shapes the expired airstream into distinct speech sounds via mobile and static articulators.

  • Produces both vowels and consonants.

• Prosody Subsystem:

  • Superimposes suprasegmental features onto speech, such as intonation, stress patterns, rhythm, and tempo.

  • Imparts extra linguistic and emotional meaning beyond literal lexical content.

Stages of Speech and Language Development

• Pre-linguistic to Toddlerhood Period:

  • Cooing sounds: Early production of comfort sounds, predominantly vowel-like vocalizations.

  • Babbling:

  • Canonical (reduplicated) babbling: Repetition of identical consonant-vowel combinations (e.g., "dadada").

  • Variegated (non-reduplicated) babbling: Production of varied consonant-vowel sequences within a single vocalization (e.g., "badagu").

  • Jargon speech: Fluent strings of variegated sounds produced with adult-like prosody, intonation, and rhythm, but lacking intelligible word forms.

  • First words: Emergence of true symbolic words with consistent, adult-like meaning and contextual relevance.

  • Lexicon expansion: Development continues until the expressive vocabulary reaches a core threshold of $50\text{ words}$, prompting rapid grammatical acceleration.

• Emerging Language Period: Transition from isolated word usage to beginning word combinations and early semantic relations.

• Developing Language Period: Rapid acquisition of foundational grammatical syntax, morphemic markers, and expanded sentence length.

• Middle Childhood Period: Mastery of advanced, non-canonical syntactic structures, specifically including passive constructions.

• School-Age to Early-Adolescence Period: Development of high-level abstract linguistic abilities, featuring advanced comprehension and production of figurative language (such as idioms, metaphors, similes, and non-literal expressions).

Developmental Stages of Writing and Spelling

• Random scribbling: Earliest stage marked by motor exploration without directional awareness, organizational intent, or letter correspondence.

• Controlled scribbling: Developing motor coordination producing repeated marks, lines, horizontal strokes, and circular forms.

• Letter-like forms (mock handwriting): Production of discrete shapes and symbols that mimic standard alphabet letters and reflect early print awareness.

• Letter/symbol relationship: Emergence of the alphabetic insight that written characters and symbols correspond directly to discrete speech sounds.

• Invented spelling: Phonetic spelling attempts based on an individual's current phonetic understanding of letter-sound associations.

• Standard spelling (conventional spelling): Full adoption and accurate mastery of established orthographic conventions and formal spelling rules.

Neuroanatomy and Functional Divisions of the Nervous System

• Anatomical Divisions:

  • Central Nervous System (CNS): Consists of the Brain and the Spinal cord.

  • Peripheral Nervous System (PNS): Consists of the Cranial nerves and Spinal nerves.

• Functional Divisions (Motor Pathways):

  • Upper Motor Neuron (UMN): Cortical and subcortical neurons that convey descending motor impulses to brainstem or spinal cord motor nuclei.

  • Control Circuit: Regulatory, modulating neural loops (including the cerebellum and basal ganglia) that coordinate, calibrate, and smooth motor executions.

  • Lower Motor Neuron (LMN): Peripheral neurons forming the final common pathway directly innervating skeletal muscles.

• Gross Anatomy of the Brain:

  • Cerebrum: Composed of two cerebral hemispheres (Right vs Left).

  • Frontal lobe: Mediates voluntary motor execution, higher executive function, expressive language, and focused attention.

  • Parietal lobe: Integrates somatosensory information and governs sensory perception.

  • Temporal lobe: Mediates receptive language, auditory processing, and memory encoding.

  • Occipital lobe: Dedicated to the processing of visual stimuli.

  • Cerebellum: Controls motor coordination, motor learning, posture, and equilibrium.

  • Brainstem: Houses critical vegetative survival networks, autonomic centers, and the nuclei for cranial nerves.

Cranial Nerves and Sensorimotor Functions

• Olfactory Nerve (CN I): Sensory nerve mediating olfaction (smell).

• Optic Nerve (CN II): Sensory nerve mediating vision; essential for visual literacy processes including reading and writing.

• Oculomotor Nerve (CN III): Motor nerve controlling extrinsic eye movements.

• Trochlear Nerve (CN IV): Motor nerve controlling ocular rotation and downward eye movement.

• Trigeminal Nerve (CN V): Sensorimotor nerve mediating facial sensation and muscles of mastication.

• Abducens Nerve (CN VI): Motor nerve controlling lateral eye movement.

• Facial Nerve (CN VII): Sensorimotor nerve mediating face movement (muscles of facial expression) and anterior taste.

• Vestibulocochlear Nerve (CN VIII): Sensory nerve dedicated to audition (hearing) and vestibular balance.

• Glossopharyngeal Nerve (CN IX): Sensorimotor nerve mediating pharyngeal sensation, pharyngeal movement, and posterior taste.

• Vagus Nerve (CN X): Sensorimotor nerve mediating laryngeal sensation and laryngeal movement (critical for voice production and airway closure).

• Accessory Nerve (CN XI): Motor nerve mediating neck movement (sternocleidomastoid and trapezius activation).

• Hypoglossal Nerve (CN XII): Motor nerve controlling tongue movement necessary for articulation, bolus manipulation, and swallowing.

Cognitive Processes and Associated Neural Structures

• Sensation: Detection of incoming environmental sensory signals via peripheral pathways and specialized cranial nerves:

  • CN II (Optic): Required for visual input in reading and writing.

  • CN VIII (Vestibulocochlear): Required for acoustic input in auditory processing and hearing.

• Perception: Conscious processing, integration, and interpretation of sensory signals, localized primarily in the parietal lobe.

• Attention: Conscious focus, vigilance, and cognitive filtering, primarily controlled and regulated by the frontal lobe.

• Memory: Distributed multi-region neural network fundamentally including the hippocampus for retention and encoding.

Neural Basis of Expressive and Receptive Language

• Expressive Language:

  • The functional capacity to formulate and express communicative messages to others.

  • Neurological localization established by Paul Broca.

  • Governed by Broca’s area, located in the frontal lobe.

• Receptive Language:

  • The functional capacity to comprehend, decode, and understand language from others.

  • Neurological localization established by Carl Wernicke.

  • Governed by Wernicke’s area, located in the temporal lobe.

• Hemispheric Specialization:

  • The left hemisphere is the dominant cerebral hemisphere for language processing in the majority of individuals.

Respiratory Mechanics and Physiology for Speech

• Primary Biological Roles:

  • Dedicated to fundamental survival through oxygen delivery, gas exchange, and airway protection.

• Secondary Role:

  • Functions as the acoustic and aerodynamic power resource driving phonation.

• Respiration Modalities:

  • Silent (quiet) respiration: Autonomic, vegetative tidal breathing characterized by rhythmic, roughly equivalent cycles of passive inspiration and expiration.

  • Respiration for speech: Volitionally modified breathing characterized by rapid, deeper inspirations and prolonged, metered, active exhalations to support continuous voicing and phrasing.

Exam 2 Logistics, Policies, and Structure

• Access Window:

  • Opens: Wednesday, October 14 at $8:00\text{ AM}$.

  • Closes: Thursday, October 15 at $11:59\text{ PM}$.

  • Continuous availability spans from Wednesday morning at $8:00\text{ AM}$ through Thursday night at $11:59\text{ PM}$.

• Administration and Environment:

  • Administered asynchronously; students may access and sit for the exam at any self-selected point during the open testing window.

  • Standard scheduled class time is reserved specifically for taking the exam to accommodate individuals requiring that dedicated window; no regular lecture meeting is held on that date.

  • Format is open-slide, open-note, and take-home.

  • The utilization of online informational resources is permitted to assist in formulating responses.

• Time Allocation and Constraints:

  • Total allowable test duration is $95\text{ minutes}$ ($1\text{ hour and }35\text{ minutes}$).

  • The session must be launched with at least $95\text{ minutes}$ remaining prior to the absolute system closure deadline on Thursday, October 15 at $11:59\text{ PM}$ to secure the full test time.

• Question Inventory and Scoring:

  • Contains $40\text{ questions}$ for a cumulative value of $40\text{ points}$.

  • Allocates approximately $2\text{ minutes and }20\text{ seconds}$ per question.

  • Consists of three specific test item formats:

  • Multiple choice questions

  • Matching questions

  • True/false questions