tag:blogger.com,1999:blog-9048879464910781933.post392176608053594251..comments2023-10-12T00:25:24.119-07:00Comments on Talking Brains: Early thoughts on the Hickok & Poeppel dual stream modelGreg Hickokhttp://www.blogger.com/profile/16656473495682901613noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-9048879464910781933.post-24103650262257342352017-08-04T09:58:16.631-07:002017-08-04T09:58:16.631-07:00The idea that I've been pursuing is that the p...The idea that I've been pursuing is that the pSTS houses stored structural templates, which are a bit like elaborated lemmas from the production literature. The idea of lexicalized bits of structure is pretty well-accepted in the psycholinguistic and computational literature. This is a bit distinct from what is often talked about as a "grammar area", but would certainly be where stored structural information is stored. It's situated in the right place for connecting semantic processing (STS/MTG, angular gyrus) and sensory/perceptual processing (STG, MT, inferior temporal), which is how people traditionally conceive of as the role of syntax (e.g., the interface between sound and meaning). The VLSM aphasia literature I've looked at has found associations between sentence comprehension deficits (Pillay et al., 2017) as well as grammatical acceptability judgment deficits (Wilson & Saygin, 2004) and damage to this general area. I certainly don't think this is a "merge" area or anything like that. About the basal ganglia - I definitely think this is relevant, particularly with respect to language acquisition.<br /><br />I'd love to hear more about what you are working on!<br /><br />-WWilliam Matchinhttps://www.blogger.com/profile/14694924777230753361noreply@blogger.comtag:blogger.com,1999:blog-9048879464910781933.post-65138934007429124342017-08-03T14:17:43.773-07:002017-08-03T14:17:43.773-07:00This comment has been removed by the author.William Matchinhttps://www.blogger.com/profile/14694924777230753361noreply@blogger.comtag:blogger.com,1999:blog-9048879464910781933.post-28813939288056451952017-08-03T08:51:56.302-07:002017-08-03T08:51:56.302-07:00As you know, our data don't show the anterior ...As you know, our data don't show the anterior insula is particularly important for speech production, regardless for stage of planning/execution. I'm still waiting for anyone to show that we are wrong...<br /><br />Regarding grammar, it is probably futile to look for a specific cortical area that is "grammar specific," right? Looks like many different regions are important for different aspects for grammatical processing. We have been looking at this issue using lesion data and really haven't gotten anywhere in spite of having fairly large sample sizes. We still haven't given up on this issue. But, so far, there isn't much there... Regarding the basal ganglia and grammatical processing, Philip Lieberman made some pretty strong claims in this regard (if my memory from grad school serves me correctly...). Not a bad idea. <br /><br />- Julius Fridriksson Unknownhttps://www.blogger.com/profile/13515306564754569136noreply@blogger.comtag:blogger.com,1999:blog-9048879464910781933.post-26298303655465752732017-08-02T09:56:48.016-07:002017-08-02T09:56:48.016-07:00It seemed likely that the insula was a lower level...It seemed likely that the insula was a lower level of coding than Broca's area. Then, later, the role of the insula at all in speech planning has been questioned. I still don't think we understand it well. <br /><br />The ATL did emerge as a potentially important contribution: we did a lot of work on that over the years (look for co-authored papers of mine with former grad students, Colin Humphries, Kayoko Okada, and Corianne Rogalsky) concluding that the ATL is more about combinatorial semantics than grammar. Another former grad student, William Matchin, is pursuing the idea that the pSTS is a critical region for syntax, which has quite a lot of promise. I think proposals that the dorsal stream is playing an important role (e.g., see Friederici) is conflating syntax and working memory. Basal ganglia deserve more attention (e.g., see Michael Ullman's work for one line of argument). Greg Hickokhttps://www.blogger.com/profile/16656473495682901613noreply@blogger.comtag:blogger.com,1999:blog-9048879464910781933.post-48089182867544236232017-08-02T09:31:56.956-07:002017-08-02T09:31:56.956-07:00So, what made you drop the "phonetic-motor ar...So, what made you drop the "phonetic-motor articulatory systems in Broca's area via the anterior insula" connection? And, any luck finding "a place for grammar"? :-)Unknownhttps://www.blogger.com/profile/13515306564754569136noreply@blogger.comtag:blogger.com,1999:blog-9048879464910781933.post-43664080257876516432017-08-01T14:11:36.399-07:002017-08-01T14:11:36.399-07:00Yes, that was a direct reference to the then new t...Yes, that was a direct reference to the then new tag-line of Chomsky's: "A virtual conceptual necessity." Hey, it was an email. No bibliography necessary. ;-)Greg Hickokhttps://www.blogger.com/profile/16656473495682901613noreply@blogger.comtag:blogger.com,1999:blog-9048879464910781933.post-72281319891476759842017-08-01T13:19:12.464-07:002017-08-01T13:19:12.464-07:00"Thus, the anatomical model of language is re..."Thus, the anatomical model of language is reduced to interface necessities (might I say, limited to those of virtual conceptual necessity)"<br /><br />And no Chomsky citations?!?William Matchinhttps://www.blogger.com/profile/14694924777230753361noreply@blogger.com