Neurology (Speech & Language)

Front 1

Primary Auditory Cortex

Back 1

transverse temporal gyrus aka heschls gyrus (B 41,42)

Front 2

Primary Visual Cortex

Back 2

striate cortex surrounding calcarine fissure (B 17)

Front 3

Primary somesthetic

Back 3

postcentral gyrus (B 3,1,2)

Front 4

Primary Motor

Back 4

precentral gyrus (B 4)

Front 5

Auditory assoc (unimodal)
1. location
2. if Wernickes is damaged?
3.4 lang functions dep on Wernickes?

Back 5

1. posterior, superior temporal lobe gyrus (T1 & partial T2)
2. Still perceives aud info, but cannot associate to other parts of cortex.
3. A-Aud-verbal comprehension (association areas interpret the signal)
B-Preauditorization evocation and recall of learned aud patterns (internal aud representation)a- wernickes is a node for 2way interactions between sens word rep. and the associations that lead to the meaning. b-some syntactic elements are automatized c- key lexical items prob require preauditorization, specifically unfamiliar ones d- preaud relates to word-retrieval function C- Auditory language formulation: key words or phrases represented, in Wernickes itis a basic blueprint of message that becomes refined by posterior areas. D- Aud guidance: aud code simultan. forwarded to Brocas & other areas that refine the message.

Front 6

Speech Motor Association Cortex
1. location
2. purpose?
3. lang functions

Back 6

1.inferior, posterior frontalgyrus (pars opercularis & pars trinagularis)
2. intermediary between wernickes and motor strip - takes info from wernickes and transduces it into sequences of motor codes, Brocas has access to already learned motor patterns.3. lang functions- Praxic functions: phoneme selection, speech initiation, articulatory transistions (contributes to fluency). Lang Comp: tonic effect (readying mech for Wernickes) communicate via arcuate fasciculus (superioir long. fasc.) Grammaticalfunctions: grammaticalwords, grammatical inflections