What is Aphasia?
Aphasia is a language disorder that
negatively affects a person's ability to talk, understand the spoken word and
also their reading and writing. Originating from the Greek word
"aphatos" which means speechless, aphasia is a symptom resultant of
pre-existing brain damage, such as Alzheimer's disease or stroke (with over 30%
of stroke victims suffering aphasia to some degree).
As there are three types of aphasia, the
symptoms can differ for each type. Details of these differences are:
Global aphasia - All parts of vocal and
written interaction are affected. Both writing and reading is impaired, as well
as speech and listening.
Fluent aphasia - Speech is hard/not
possible to understand. The ability to speak is not impaired, but the words
spoken make no sense. Writing ability is usually effected in the same way, the
writing is flowing but what is actually written is nonsense.
The person suffering from fluent aphasia
may become annoyed and irritated if someone has trouble understanding them as
they don't always realize they have a language disorder. As for understanding,
people with fluent aphasia more commonly have problems with speech than
writing.
Non-fluent aphasia - With this type, speech
is slower and hesitant, the patient also struggles to get their words out.
Sentences are rarely completed, and even though some words are missing, what
they are saying can be made sense of. Again writing ability is usually the same
as speech.
Someone with non-fluent aphasia has more
problems with grammar than words alone. People with this kind of aphasia are
more aware of their disorder and may get annoyed when they struggle with words.
The visible signs that can be noticed on
someone with aphasia are weakness or paralysis on one side of the face or body.
What Causes Aphasia?
The part of the brain that controls speech
and language recognition is referred to as the language center. It is normally
in the part of the brain opposite to side of the hand you write with (e.g. left
side of brain for the right handed). These parts of the brain are known as
Broca's area and Wernicke's area. Aphasia is caused when any of these parts of
the brain or the neural pathways connecting them are damaged. This can be a
result of the following:
- Stroke
- Traumatic brain injury
- Epilepsy
- Migraine
- Brain tumor
- Alzheimer's
- Parkinson's
How
is Aphasia Diagnosed?
As the number of people that have aphasia
after suffering a stroke is high, a test for aphasiis usually carried out soon
after the stroke.
The test is normally carried out by a
language therapist and would include some basic exercises to help them asses
the patient's language skills, such as:
- Naming objects that begin with a certain letter
- Reading or writing
- Holding a conversation
- Understanding directions and commands
What are the Treatment Options for Aphasia?
The only way to really treat aphasia is
with SLT (Speech and Language Therapy). It is not usually viable for someone
with aphasia to completely regain the level of communication they had before
the disorder, nevertheless SLT can lead to a massive improvement, even with
global aphasia.
The
results aimed to be achieved from SLT are:
- Better use of the residual language abilities.
- Improved language skills, by relearning them
- Ability to communicate in a different way, making up for missing words in speech
MIT (Melodic Intonation Therapy) - this is
mostly used to treat non-fluent aphasia. It involves the use of humming or
singing in rhythm (melodic intonation) while repeating phrases and words the
patient has been struggling with. This process stimulates brain activity in the
right hemisphere. MIT is effective at increasing how many words the patient can
remember.
Group therapy - this is where a small group
of people with aphasia get together with a therapist and communicate. This
gives the patients a chance to practice and improve their language skills by
interacting with a group of people in a comfortable and helpful environment.
PACE (Promoting Aphasic's Communicative
Effectiveness) - a kind of SLT that improves the patient's communication skills
by engaging them in conversation. The patient would be shown a picture or a
drawing and asked to respond in any way that they can. The level of conversation
will start off simple but through time it will become more involved.
CST (Computerized Script Training) - as
suggested in the title, this involves a computer delivered script based on
day-to-day conversations. It gives the patient an opportunity to practice their
communication skills using realistic situations.
How do you communicate with someone that
has Aphasia?
The following are some tips on how to
communicate with someone that has aphasia:
- Try to keep sentences short and simple and avoid questions that require a complicated answer.
- Do not change the subject of conversation too quickly.
- Minimize distracting background noises.
- When the person with aphasia is replying, try not to pressure them for a response and give them plenty of time to answer.
- Try not to correct their language as they may find this frustrating.
- Remember that their disorder is affecting the way they communicate, their tone may not necessarily reflect their mood.
- Try to keep a notepad/some paper and a pen to hand, this may help you or them to communicate.