What role does the right hemisphere play in language?Right hemisphere functionscerebral asymmetry> 90% of people are R-handed> 95% of R-handers have language in the L hemisphere~ 70% of L-handers ALSO have language in the L hemisph.the two hemispheres are specialized for different functions:Etiology of RHDfocal damage:primarily stroke (as with left hemisphere damage)also right-sided head trauma or tumoursdiffuse damage:traumatic brain injurydementia, e.g. Alzheimer’s diseaseVisual perceptual deficits in RHDvisual agnosiadifficulty recognizing objectsleft homonymous hemianopiavisual field cut on left side of spaceleft neglectlack of attention to the left side of space common, especially in early stages of recoveryreading only the right-side of printed materialsleave out left-side details if copying drawingsfinding only objects on right side of roombumping into walls or doorways on leftshaving only right side of faceLeft neglect in visual tasks“Draw a clock.”Half of clock is not drawn“Copy this picture.”Part of the flower and its pot are not copiedCognitive deficits in RHDAttention / Awarenesse.g. staying on task; ignoring distractions; inhibiting impulsive reactionsanosognosia: denial of deficitsMemory, esp. short-terme.g. recalling three items after five minute delay; remembering appointmentsProblem solving, Judgmente.g. solving hypothetical problems, choosing a solution from among alternativesOrganizatione.g. sequencing or organizing items; organizing discourseReasoning, Abstract thinkinge.g. deductive reasoning puzzles, understanding figurative languageImplications for communicationcomprehension and production of discourse:difficulty attending to important information & integrating details to form a coherent storytendency to go off on tangentsdifficulty understanding non-literal languagemisunderstanding of implied meaning (humour, sarcasm)difficulty producing/understanding emotion cuesreading & writing:as above, difficulty attending to important information, and integrating detailsvisuospatial problems may result in missing information on left side of pagelanguage is better than communicationThe “Cookie Theft” pictureRHD Cookie Theft picture description“Well, it’s on 8 1⁄2 x 11 inch paper overall covered by plastic. Looks like it might have been done with drawing pens and India ink on white paper. It’s less than 20 pound paper. Else you wouldn’t have used black to keep it from shining through. I see window and curtain some- body has pulled back and hospital-type curtains exposing a window and utensils on table, pan or pot, curtains drawn back with strings tied. Kitchen curtains, no particular design on them. A valance at the top of the curtains with an ordinary angular design. The rest of the curtains only called curtains because of their placement and overall lack of colour. There’s evidence that the paper was punched for a three-ring binder before it was made. The room seems to be filled with air since the curtains have a billowing effect.”“Easter Morning” ( by Norman Rockwell)Easter Morning – Year 1Ex: Now, I’d like you to look at that picture there.Sub: Too many children.Ex: Yes, I’d like you to tell me everything you can about that. Describe what’s happening in the picture.Sub: Well, here’s a man reading something. It’s happening, but he’s not looking at the reading. See, he’s looking someplace else, and he’s he’s talking to these beautiful ladies here, and also reading his own paper beside. And here’s his little boy. Isn’t he cute?Ex: Describe what’s happening here.Sub: Well, the father’s gotten a little tired of reading all this, see, so he’s just getting rid of that, one at a time as they march past him going to their own reading or whatever else they do. (laugh) That’s real good. And he has his own great big, great great big newspaper. And then he has a few down here like this. Two feet for all that. That’s a cute thing right there. (laughs)Easter Morning – Year 2Ex: Describe what’s going on in this picture, and say what you would like to about that.Sub: Well, they look like the pictures that uh don’t want to be pick-picketed or or made made up into an odd creature in the meantime.Ex: Is there anything else that you want to say about that?Sub: Yes, they do. They they they they they actually look so actable that it makes you want to run away for some reason or other. But um they have their their special aqualelge over. The way people take uh take uh an (actoba) that they don’t even know anything about. But they just don’t try to bother with these other people who have their.Ex: Okay, great, thank you.Easter Morning – Year 3Ex: Tell me about this picture. What can you tell me about that picture?Sub: Yes. Mmhm. It must be a ah, ah, somebody that really thought themselves really gone and close way.Ex: What’s happening in this picture?Sub: No.Ex: What’s happening in this picture?Sub: Well, there’s that’s something that we’d be supplied with it, but usually goes away with a.Ex: Okay, good.Why look into the brain?Are the language processes specific to language, or are they aspects of general cognitive processing?When understanding a sentence, do we use a general working memory store, or do we have a dedicated stores that only store information related to language?What can be learned by from looking at the language of people with damage to different parts of the brain?Csd 3117 1st edition Lecture 26Outline of Last Lecture I. Why look into the brainII. Broca’s areaIII. Wernicke’s areaIV. Hickok & Poeppel’s Dorsal and Ventral StreamsV. Where in the brain is the semantic system?VI. Semantics and vmPFCOutline of Current Lecture VII. Right hemisphere functionsVIII. Etiology of RHDIX. Visual Perceptual deficits in RHDX. Left neglect in visual tasksXI. Cognitive deficits in RHDXII. Implications for communicationa. The “Cookie Theft” pictureb. “Easter Morning” Current Lecture What role does the right hemisphere play in language? Right hemisphere functions- cerebral asymmetryo > 90% of people are R-handedo > 95% of R-handers have language in the L hemisphereo ~ 70% of L-handers ALSO have language in the L hemisph.- the two hemispheres are specialized for different functions:These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Etiology of RHD- focal damage:o