Cognition Flashcards
what is synesthesia
conflation of sensory experiences from one sensory domain with those from another, or the mixing of two modalities of the same sensory domain
which hemisphere is dominant for speech in most people
left
where is Broca’s area
just anterior to the primary motor cortex in the frontal lobe
left inferior frontal gyrus
whre is wernicke’s area
posterior to the auditory cortex in the temporal lobe
left posterior superior temporal gyrus
what is the wernicke- geschwind model
what happens when you say written words
visual information is passed to wernicke’s area via the angula gyrus and then to broca’s area
the visual cortex can pass information directly to broca’s area but the path remains elusive
a form of aphasia occurs when the link between the two areas is damaged and is typified by a reduced ability to repeate spoken words
what is the neurological basis for hearing, understanding and repeating spoken words
afferent information arrives at the auditory complex and wernicke’s area (left temporal lobe)
wernicke’s area comprehends the words and passes the information to Broca’s area for sentence construction and syntax
Broca’s area stimulates the motor cortex to control the lips and tongue etc
what is wernicke’s aphasia
patients speak gibberish
reduced comprehension of speech
inability to understand written information
what is broca’s aphasia (motor or non fluent)
patients have difficulty finding the right words but they can understand what is said to them
what is the function of broca’s area
has the motor programmes for generation of language and sentence construction
what is the function of wernicke’s area
comprehension of language
what structure links brocas and wernickes
arcuate faciculus
what is aprosody
inability to interpret or use emotion in language, caused by right brain damage
which hemisphere is usually dominant
left, when the person is right handed
