Cognitive-Communication Disorders Flashcards
Types of Attention
Sustained
Selective
Divided
Attentional Shifting
Working memory
Ability to hold and manipulate several items of info at any one time
Speed of processing
how quickly we process any kind of info
- motor speed/reation time
eg. reading a passage quickly/adding up as quickly as possible
Visuoperceptual abilities
Ability to discriminate, integrate and process visual info
colour, shape, form, size
Visuospatial abilities
Ability to conceptualize visual and spatial relationships
Visuomotor/visuoconstructional abilities
Ability to manipulate and construct objects
Types of memory
verbal memory, visual memory, immediate recall, delayed recall
Immediate recall
Ability to recall info a short time after it has been presented
Includes verbal and visual info
Delayed recall
Recalling info that has been stored for a period of longer than a few minutes
Both verbal and visual info
Executive functions
High level abilities that guide and control behaviour Mental flexibility Inhibitory control Generativity Planning and organisation Decision making Self-monitoring
Indicators of Cognitive-Communication Disorders
Immediate recall, delayed recall, episodic memory
- affected in Alzheimers
Prospective memory
Planning for the future
Disorders of the Conceptualiser
Cognitive-Communication Disorders
High Level Language Difficulties
Right Hemisphere Language Disorder
Neurological conditions associated with Cognitive-Communication Disorder
TBI
Dementia (Alzheimer’s Disease, Frontotemporal Dementia)
Stroke (R. Hem Stroke, prefrontal cortex)
Autism
TBI
Insult to the brain caused by an external force
- head being struck/striking an object
- acceleration/deceleration without external trauma
- foreign body penetrating the brain
- Forces from blast/explosion
Incidence of TBI
More common in males vs females
Assoc. with lower socioeconomic status, history of risk taking behaviour, poor academic/vocational achievement, use of alcohol and recreational drugs
Falls in the older population
Forms of TBI - Closed Head Injury
Blunt blow/violent shaking
- Symptoms depend on the location, intensity and direction of blow, whether the head was still or in motion
Forms of TBI - Penetrating Head Injury
Object penetrates skull, may carry debris into the brain
- type/severity of symptoms depend on location of penetration and trajectory of object
Primary Damage from TBI
Coup and contrecoup damage Contusion, laceration and shearing of axons - diffuse axonal injury - bruising and swelling of brain tissue Shearing of blood vessels - subdural and intracerebral haemorrhage
Coup and Contrecoup injury
Skull strikes a stationary object - brain moves within the cranium Causes coup (site of contact) and contrecoup (opposite side) brain injury
Common Sites of Primary Damage
Anterior and inferior frontal and temporal lobes
Explains common presentation of:
- depressed executive control over cognitive/communicative functions
- impaired social perception/social reactivity
- Reduced behavioural self regulation
Diffuse neuronal shearing concentrated in subcortical white matter, brain stem and corpus collosum
- contributes to initial loss of consciousness, arousal/attentional deficits, reduced processing speed
Secondary Damage
Haemorrhage - slowly developing and localised
Cerebral oedema - widespread swelling
Intracranial pressure - compression/displacement of brain tissue due to pressure build up
Seizures - post traumatic seizures complicate recovery, may persist
Hypoxic Ischaemic Injury - stroke
TBI Symptoms - Physical
Headache, nausea, vomiting, dizziness, blurred vision, sleep disturbance, weakness, paresis, sensory loss, spasticity, dysarthria, apraxia
TBI symptoms - cognitive
Attention, memory, concentration, language, learning, speed of processing, planning, reasoning, judgement, executive control, insight, impulsivity