Speech

Spontaneous speech is reduced

Language allows the communication and elaboration of thoughts and experiences by linking them to arbitrary symbols known as words. the neural substrate of language is composed of a distributed network centered in the perisylvian region of the left hemisphere. The posterior pole of this network is known as Wernicke’s area.

– An essential function of Wernicke’s area is to transform sensory inputs into their neural word, representations so that these can establish the distributed associations that give the word its meaning.

Wernicke’s aphasia :¬ Comprehension – Impaired

Repetition of spoken language – Impaired Naming – Impaired

Fluency – Preserved/Increased.

Language is highly paraphasic. Neologisms Voluminous speech.

Motor speech area of Broca (Brodmann’s area 44, 45) occupies the opercular and triangular portions of the inferior frontal gyrus of the dominant hemisphere. Broca’s area is formed of two minor gyri, called pars opercularis and pars triangularis, that lie in the posterior end of the inferior frontal gyrus. This area subserves expressive language function.

Answer is B (Verbal expression):

Motor aphasia also known as expressive aphasia is a disorder of thought and word finding resulting in inadequate verbal expression.

Answer is D (Repetition is preserved):

Repetition is impaired in both Broca’s and Wernicke’s aphasias. Aphasias are disorders of understanding, thought and word finding.

Anomie aphasia : Remember :

Most common language disturbance seen in – Head trauma = Anomie ApahsiaQ

Most common language disturbance seen in – Metabolic encephalopathy = Anomie Apahsiae Most common language disturbance seen in – Alzheimer’s disease = Anomie Apahsiae

Answer is A (Posterior temporal and parietal lobes, dominant hemisphere):

Aphasias are disorders of understanding, thought and word finding and represent a lesion in the dominant (usually left) hemisphere. The patient in question represents a case of sensory / receptive Wernicke’s aphasia and hence a lesion in the temporal and parietal lobe of the dominant hemisphere.

Answer is D (conduction):

Conduction Aphasia is a ‘Fluent’ Aphasia with preserved comprehension and impaired Repetition.

Ans. is ‘b’ i.e., Non fluent aphasia

Ans. is ‘c’ i.e., Conduction aphasia

• Arcuate fibers are bundle of nerve fibres that connect Brocas area to the Wernicke ‘s area.
• Damage to the arcuate fasciculus causes a disorder called conduction aphasia

Ans. is ‘d’ i.e., Broca’s aphasia

Aphasia