First Test Flashcards
Anomia
trouble with word finding
#1 difficulty presented with aphasia
Circumlocution
where the patient can describe but not identify the target word (ex. cold/white for snow)
Agrammatism/Telegraphic Speech
missing syntax, usually just getting at the content words
Auditory comprehension deficits
trouble with understanding spoken language
Phonological Errors (phonemic Paraphasia)
saying the wrong phoneme in place of another
Semantic Errors (Verbal paraphasia)
an error where there is a semantic relationship
- where a sentence can be grammatically correct but it doesn’t make sense
- ex. I cut steak with a fork
Perseverations
being stuck on something to repeating
-the word of segment will continue to come up
-sometimes can understand that they are doing it sometimes they cant
stereotypy
language that is a go to word or phrase
- can be used as a fill in word
- do not understand they are saying it
Alexia
difficulty with reading
Agraphia
difficulty with writing
Hempiparesis
one sided (unilateral) weakness
Hemiplegia
one-sided severe weakness or paralysis
Hemisensory Loss
one-sided (unilateral) loss of limitation
Frontal Lobe General Functions
-cognitive functions
- reasoning, decision making, planning
- primary motor function, including spoken language
INSULA General Function
-self-awareness, consciousness
- cognitive functions
-motor planning and control (speech articulation)
3 Features Necessary for Diagnosis of AOS
- Sound errors (distortions, distorted substitutions)
- Slowed Rate (interval between words, sound transitions, syllables)
- Prosodic Abnormalities (syllable segregation, equalised stress. Ex. “fer-idge)
Hemianopia
one sided visual field blindness
Wernicke Aphasia: auditory comprehension
NO
Wernicke Aphasia: repetition
NO
Wernicke Aphasia: fluency
YES
Wernicke Aphasia characteristics
- notable anomia
- perseverations
- “empty speech”
- press of speech
- jargon, neologisms
Wernicke Aphasia localisations
Superior temporal gyrus; may involve left temporal and parietal lobes
Brocas Aphasia: fluency
NO
Brocas Aphasia: repetition
NO
Brocas Aphasia: auditory comprehension
YES
Brocas Aphasia characteristics
-apraxia of speech
- short phrase length
- agrammatism
-phonemic paraphasia
- impaired writing
Broca’s Aphasia Localisation
-large lesion involving Broca’s area and frontopartietal operculum
- May include subcortical lesions
Conduction Aphasia: fluency
YES
Conduction Aphasia: auditory comprehension
YES
Conduction Aphasia: repetition
NO
Conduction Aphasia characteristics
-repetition significantly worse than verbal output
- conduite d’approche
- conduite d’écart
Conduction Aphasia localisation
- damage to but not destroying Wernicke’s area
- Lesions in inferior parietal region
- Supramarginal gyrus with or without extension to arcuate fascicules
Conduite d’approche
-repeated words come close to target with more attempts
- ex “frig-frid-friged-fridge”
Conduite d’ecart
- repeated words move farther from target word
- ex. “frig-freg-freeg-reek-reed?”
Global Aphasia characteristics
-virtually no speech output
- stereotypical utterances
PROFOUND anomia
Global aphasia: fluency
NO
Global Aphasia: auditory comprehension
NO
Global Aphasia: repetition
NO
Global Aphasia localisation
-lesion incorporates both Broca’s and Wernickes aphasia
Anomic Aphasia: fluency
YES
Anomic Aphasia: auditory comprehension
YES
Anomic Aphasia: repetition
YES
Anomic Aphasia characteristics
-nonspecific phrases
- word finding pauses
- circumlocution
- paraphasia rare, if present, semantic
Transcortical Sensory Aphasia: fluency
YES
Anomic Aphasia localisation
-scattered around the left hemisphere
Transcortical Sensory Aphasia: auditory comprehension
NO
Transcortical Sensory Aphasia: repetition
YES
Transcortical Sensory Aphasia characteristics
- frequent use on nonspecific words
- semantic paraphasia> phonemic paraphasia
- significant anomia
Transcortical Motor Aphasia: fluency
NO
Transcortical Motor Aphasia: auditory comprehension
YES
Transcortical Motor Aphasia: repetition
YES
Transcortical Motor Aphasia characteristics
- some preserved grammar
- less articulatory effort
- impaired reading and writing, especially oral reading
- inability to generate fill sentences or strings of sentences
Mixed Transcortical Aphasia: fluency
NO
Mixed Transcortical Aphasia: auditory comprehension
NO
Mixed Transcortical Aphasia: repetition
YES
Mixed Transcortical Aphasia characteristics
-echolalia
Purpose of Aphasia Therapy
- improve language
- improve communication
- help a person live well
The Continuity Hypothesis
- anyone can look like they have “aphasia” given the right personal (ex. fatigue) and contextual factors (ex. loud environment + multiple conversations)
4
Precentral gyrus (primary motor cortex)
6,8
Premotor Cortex
44,45
Inferior Frontal Gyrus (Brocas Area)
3.1,2
Postcentral Gyrus (Primary sensory cortex)
40
Supramarginal Gyrus
22
Sub and Post Temporal Gyrus (Wernickes area)
41,42
Primary auditory cortex (Heschl’s gyrus)
9-11
Prefrontal Region (Cognitive Assoc Cortex)
Lesions in Frontal may result in
-contralateral paralysis
- impaired cognition (reasoning)
- judgement
- concentration
- inappropriate social aphasia
- expressive aphasia
Lesions in Temporal may result in
- receptive aphasia
- memory disturbances
Lesions in Parietal may result in
- contralateral hemisensory loss
- tactile agnosia
-inattention - visual optical deficits
- anosagnosia (denial of impaired functioning
Lesions in Occipital may result in
- contralateral homonymous hemianopia
- receptive aphasia
- memory disturbances
Lesions in Cerebellar my result in
-reduced limb coordination and balance
FRAME
F: Familiarize
R: Reduce Rate
A: Assist with communication
M: Mix Communication Modalities
E: Engage Patient First
Anterior Cerebral Artery (ACA)
- superficial vascularisation of the frontal lobe: frontal lesions
Middle Cerebral Artery (MCA)
Most often implicated in aphasia post stroke from an MCA blockage or decreased bloodflow
- superficial cortical structures and the INSULA
- language impact; wernickes and brocas
Posterior Cerebral Artery (PCA)
- some type of linguistic impact (depends)
- Ocular visual/spacial challenges
Signs and Symptoms of a Stroke (BEFAST)
B: Balance - dizziness, loss of balance
E: Eyes- vision changes
F: Face- facial dropping, headache
A: Arms- weakness, numbness
S: Speech- trouble speaking, confusion
T: Time: call 911
Onset of Chronic Aphasia
- sudden
- improvement is typical
Primary Progressive Onset
- gradual
- related to dementia
Purpose of Aphasia Therapy
- Improve Language
- Improve Communication
- Help a person live well
2 Aphasia Treatments
- Impairment or restorative approach
- Compensatory or functional communication approach
Impairment or restorative Approach Target
- specific language impairment (phonological-semantic, syntactic)
Impairment or restorative Approach Goal
- generalisation beyond trained items/tasks and to the communicative environment of the person
- reducing impairment> improving success of communication
Compensatory or Functional Communication Approach Target
- individual communication abilities with high personal relevance to daily life; eliminating barriers to communication
Compensatory or Functional Communication Approach Goal
Improving successful communication and quality of life> reducing impairment
The Continuity Hypothesis
anyone can look like they have “aphasia” given the right personal (fatigue) and contextual factors (loud environment + multiple conversations)
Aphasia Classification Systems
- Fluent/Non-fluent dichotomy
- Wernicke-Litcheim Model
Wernicke-Litchtheim Model
- an early neuroanatomically based model of language and its impairment
- all aphasia types step from where the lesion is located
- “classic” classifications of aphasia
- Parameters: fluency, auditory comprehension, repetition, naming
Fluent vs Nonfluent Classification
- phrase length
- pauses
-prosody
-speaking rate
-effort
-initiation and elaboration
-word finding
-telegraphic speech
Linguistic Impairment Features
-more specific way of describing individual’s impairment for all aspects of clinical decision-making
Aphasia Classification System
not as clinically useful as the linguistic impairment description but need to understand these labels as its used in the clinical environment
Speech production
intent/conceptualisation-> linguistic-symbolic Planning-> motor planning -> motor programming-> execution
Aphasia in Left-Handed Individuals
- Language is left lateralized about 96% of right-handers and about 70% in non-right handers
- we previously believed more cases of transient aphasia reported for non-right handed individuals (now believed incorrect)
Crossed Aphasia
- right handed individuals with aphasia following right hemisphere lesion
- deficits in prosody, metaphor comprehension, and abstract concepts
Bilingual aphasia
- NOT an aphasia classification
- Varying recovery patterns
cerebrovascular
-highway of the brain
- can carry nutrients and oxygen
Controllable Risk factors for stroke
- 87%
- obesity
- hyperglycemias
- hyperlipidemia
- renal dysfunction
- smoking
- sedentary lifestyle
- bad diet
- stress/depression
Non controllable risk factors for stroke
- certain medical conditions
- age and gender
- race and ethnicity
- personal family history
0 arteriovenous malformation
Transient Ischemic Attack (mini stroke)
- temporary stroke symptoms that resolve between minutes to hours
- once you have a TIA, 2/5 will have a stroke within 90 days
Stroke Diagnosis and Management
- Identify focal deficit
- Time last seen
- Imaging
- NIG Stroke Scale
When the stroke happens: core
- neurone are dead
When the stroke happens” penumbra
- if we are able to restore function in the penumbra, functional impairment can be salvaged
IV tPA and TKA
- stroke intervention
- administered within 4.5 hours of time last seen normal
- only ischemic strokes
- BP under 185/110
Ischemic stroke
block in the artery
thrombotic
blood clot
embolic
plaque that builds up in the arteries
hemorrhagic
brain bleed
intracerebral
in the brain- within the cerebrum
subarachnoid
- on the surface of the brain: ventricular space outside the cerebrum but under the skill
Stoke Subtypes: small vessel lacunar
19%
Stoke Subtypes: hemorrhagic
13%
Stoke Subtypes: Ischemic
87%
Stoke Subtypes: large vessel
6%
Stoke Subtypes: cardio embolic
14%
biochemical/physiologic mechanism of recovery: primary during changes within hours after stroke
- necrosis: core
- cellular inflammation: penumbra area
- retrograde and intergrade cell degeneration
- there is a dead neural cell not getting normal inputs and they begin to die- goal is to reproduce/save those areas
biochemical/physiologic mechanism of recovery: primary direct plastic- during first days/weeks
-physical repair of penumbra cells(repair) : neuro cells are rewiring what they normal do with different cells
- reorganise impaired areas (adaptation): body finding new ways to access information
- Retraining to perform a specific skill (new learning): reconsider how to do things again because a group of cells has stopped doing things
biochemical/physiologic mechanism of recovery: secondary- indirect changes over subsequent weeks and months
- transneuronal degeneration
- denervation supersensitivity
- development of diaschisis
transneuronal degeneration
- areas receiving or sending neural input to impacted areas degenerate
- any of the connecting neural pathways that were getting information from the core begin to die off
denervation supersensitivity
neurone who have lost input become super sensitive to any input
development of diathesis
- development of a temporary disability or injury
- the body has shut down so it will not do things that you used to do so they can focus on other things
biochemical/physiologic mechanism of recovery: secondary- indirect PLASTIC changes over weeks and months
- collateral sprouting
- regenerative sprouting
- collateral regenerative sprouting
collateral sprouting
-axons from nearby neutrons grow new connections with sites previously innervated by dead cells
regenerative sprouting
axonal or dendritic, creates new synapses
collateral regenerative sprouting
intact cells grow new synaptic connections to attempt to increase connections in the penumbra
Stroke recovery behavioural
capacity to perform previously impaired task in the same manner as before the injury
stroke compensation behavioural
use of a new strategy to perform that same task
stroke recovery neural level
restoration of function within an area that was initially lost
stroke compensation neural level
different neural tissue takes over functions after injury
Neurological Factors for recovery without treatment
- severity of aphasia
- size and side of lesion
- vascular perfusion and white matter integrity
- fluent vs non-fluent: fluent recover faster
- cognitive skills at baseline
Personal Factors for Recovery without treatment
-age
- baseline linguistic abilities
- satisfaction with life participation and self-perceived aphasia severity
- social suppor
Aphasia Biopsychosocial Approach
therapy should take into account:
- biological impairment based factors
- psycholinguistic and cognitive processes or languid and social communication within the social context of a person with aphasia
Distributed langue models (connectionist)
-representation: language is represented by learned patterns of activation networks between different knowledge units
- Processing: knowledge (word retrieval) is processed in an interactive manner, not sequentially/serially
- more neutrally plausible
verbal paraphasia
degree of semantic relatedness
phonemic aphasia
additions, substitutions, anticipatory, perseverative
mixed paraphasia
both semantic and phonological
neologistic paraphrases (neologisms)
- response -> “chith” (<50 phonemes shared with target
characteristics that cannot be used to diagnose apraxia of speech
- limb or oral non speech aphasia
- expressive- receptive speech/language gap
Wernicke associated signs
-possible right hemianopia
-usually no motor or sensory abnormalities
Wernicke vascular distribution
- MCA and posterior cerebral artery (PCA)
conduction associated signs
- right hemiparesis, right hemisensory loss, right hemianopia
conduction vascular distribution
MCA, parietal branches of the PCA
brocas associated signs
- right hemiparesis, right hemisensory loss
brocas vascular distribution
-anterior branches of the MCA
global aphasia associated signs
- right hemiparesis, right hemisensory loss, right hemianopia
global aphasia vascular distribution
most of MCA
anomic aphasia associated signs
variable, often absent
anomic aphasia vascular distribution
variable
subcortical aphasia lesion site
subcortical lesions
subcortical aphasia symptoms
hypophonia- weak voice
PPA Subtypes
-PPA confluent/agramatic varient: effortful speech
-PPA semantic varient (semantic dementia)
- PPA logopenic varient (wrod retreiual deficits
Brodmann Area
region of the cortex defined by its cytoarchitecture (organization of neurons)