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2810 discussions

Induced and evoked responses in MEG
by awe1＠psych.york.ac.uk 16 Dec '08

16 Dec '08

Dear all The first slide in the attached Powerpoint presentation was generated by Piers for a paper based on data gathered at Aston. The stimuli were written words. The figure shows the time-frequency plots for virtual electrodes inserted at 4 different sites in the brain, with power represented in the colour. There are 3 plots for each site showing evoked power (left), total power (middle) and induced power (right). These figures were generated in Fieldtrip where the time-frequency plots are computed with respect to a baseline. Piers has added a couple of slides which shows the steps in Fieldtrip that he used. The left middle occipital gyrus (MOGl) site is closest to primary visual cortex where the words first arrive. You will notice that the power there is mostly evoked and that the induced component is small. The same is true at the left mid fusiform gyrus (= the 'visual word form area'). Contrast that with the left and right inferior frontal gyri (IFGl), which are further from primary visual cortex. There is some evoked power at those sites, but most of the total power is induced. It seems to me that the lessons could be: 1. If you plot total power, do not automatically assume that it will be mostly induced. There are conditions and sites (close to primary sensory cortex?) where the total power may be mostly evoked. 2. Do not plot total power and call it "induced". It may not be. 3. It could be that the more synapses a response passes through, the more the power shifts from evoked to induced. That could be because different stimuli complete the passage from early to late sites at different rates in different participants with the result that the response gets jittered in time, disappears in the evoked averaging, and appears instead in the induced response. Induced responses may not always be qualitatively different from from evoked responses - they may simply be smeared out in time. (Note: This is not to deny the existence of induced responses which are NOT the result of stereotypical waveforms + jitter, but rather represents increased power in several oscillators within a given time period.) 4. It would be a good thing if the VE tools we develop in YNiC for generating time-frequency plots were capable of distinguishing evoked from induced responses and plotting them separately. Please discuss in rare pre-Christmas moments of sobriety. Andy

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FW: HM's contribution remembered in the New York Times
by Ekaterini Klepousniotou 15 Dec '08

15 Dec '08

Dear Colleagues, HM died. Several articles have appeared that you may like to read and keep. A part of neuroscience history has passed away. All the best, Katerina **************************************************************** Dr. Ekaterini Klepousniotou Lecturer in Cognitive Neuroscience & Neuropsychology Institute of Psychological Sciences University of Leeds Leeds LS2 9JT UK Tel: +44 (0)113 3435716 Fax: +44 (0)113 3435749 ________________________________ From: MNISTAFF - Montreal Neurological Institute Staff [mailto:MNISTAFF@LISTS.MCGILL.CA] On Behalf Of Enza Ferracane, Ms. Sent: Friday, December 05, 2008 3:24 PM To: MNISTAFF(a)LISTS.MCGILL.CA Subject: HM's contribution remembered in the New York Times Dear Colleagues, Here is a wonderful article that appeared on the front page of the New York Times today commemorating the life of HM and his role as the research subject in the fundamental memory studies by Brenda Milner. HM's life story is touching: his contributions to research are recognized and his relationship with Dr. Milner and her colleagues is kindly portrayed. An article by Peggy Curran marking the death of HM and highlighting his role in Dr. Milner's research appeared in the front section of the Montreal Gazette today. Please see: http://www.montrealgazette.com/Remembering+memory/1032712/story.html Please join me in offering condolences to Dr. Milner and to her former student Dr. Suzanne Corkin (Professor of Behavioral Neuroscience, MIT) who have lost a friend. Regards, Beth Kofron Elizabeth Kofron Associate Director Montreal Neurological Institute Tel: 514-398-2316 Fax: 514-398-8248 Elizabeth.kofron(a)mcgill.ca

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[Fwd: BNA National Meeting - abstract deadline reminder!]
by Gary Green 15 Dec '08

15 Dec '08

FYI sorry for cross-postings to members of the BNA -------- Original Message -------- Subject: BNA National Meeting - abstract deadline reminder! Date: Mon, 15 Dec 2008 12:48:27 -0000 From: Allen, Yvonne <Y.Allen(a)LIVERPOOL.AC.UK> Reply-To: bnanews <BNANEWS(a)liverpool.ac.uk> To: BNANEWS(a)liverpool.ac.uk *BNA 20^th National Meeting - abstract deadline** 31^st JANUARY!* This is a reminder that registration and abstract submission is now well underway for our 20^th National Meeting, 19^th – 22^nd April, 2009. We are delighted to be using for the first time The Adelphi, Liverpool, a unique and historic venue that now offers spacious conference facilities in addition to its other grand rooms and restaurants. And Liverpool is a fascinating city, fast emerging as one of the UK’s most stylish, cultured and vibrant conference venues in the UK. So why not come and enjoy some wonderful science in a truly magnificent city and see for yourself what’s been going on behind the cranes and the hoardings these past few years. The scientific programme is an exciting and topical array of seven world-class plenary speakers, 20 symposia and over 50 themed poster sessions. For the first time, there are also workshops and a satellite meeting, all FREE to registered delegates. With an equally exciting range of peripheral events and social gatherings (yes, there’ll even be a Magical Mystery Tour!) this will be a wonderful celebration of neuroscience on UK soil. So please, please do pass this message on as widely as possible as we warmly welcome non-members as well. Registration fees start from as little as £100 (including refreshments and lunches each day too), so why not consider supporting your national society next year? You’d be very welcome! *(www.bna.org.uk/bna2009/ <http://www.bna.org.uk/bna2009/>)* *_Important deadlines:_* _ _ Early registration (reduced fee): */31^st January, 2009/* Abstract deadline: */31^st January, 2009/* Bursary applications: */28^th February, 2009/* */ /* */***************************************************************/* ************************************************* Dr Yvonne Allen Executive Secretary The British Neuroscience Association Sherrington Buildings Ashton Street Liverpool L69 3GE Tel: 44(0)151 794 5449; Fax: 44(0)151 794 5516 Email: y.allen(a)bna.org.uk <mailto:y.allen@bna.org.uk>; Website: www.bna.org.uk <https://owa.liv.ac.uk/exchweb/bin/redir.asp?URL=http://www.bna.org.uk> **************************************************** /The British Neuroscience Association is a registered charity (1103852) and a company registered in England (4307833) limited by guarantee/ // -- Gary Green York Neuroimaging Centre The Biocentre York Science Park Innovation Way Heslington York YO10 5DG http://www.ynic.york.ac.uk tel. 01904 435349 fax 01904 435356 mobile 07986 778954

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The next few weeks at YNiC
by Gary Green 15 Dec '08

15 Dec '08

Dear Users There are no seminars this week. The next seminar will be in the New Year. YNiC will close for Christmas at noon on the 24th. YNiC will be open on the 29th and 30th of December.The MRI scanner has been heavily booked for these dates. YNiC will be closed on the 31st and 1st of January and will reopen on the 2nd. Please note that the MRI scanner will be used extensively by Lodestone in the next few weeks. Please do not leave your bookings to the last moment or you may be disappointed. -- Gary Green York Neuroimaging Centre The Biocentre York Science Park Innovation Way Heslington York YO10 5DG http://www.ynic.york.ac.uk tel. 01904 435349 fax 01904 435356 mobile 07986 778954

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[Fwd: HBM 2009 Call For Abstracts Reminder]
by Gary Green 12 Dec '08

12 Dec '08

The Abstract Submission site is now open for the 15th Annual Meeting of the Organization for Human Brain Mapping to be held in San Francisco, CA, June 18-22, 2009. Please note that the deadline is *January 11th, 2009 at 11:59 PM CST USA*. Please click here <http://www.llmsi.com/index.php?cid=1411910&forward=2670> to submit an abstract. Though you are not required to register for the meeting prior to submitting an abstract, the presenter of the abstract must register for the meeting. To take advantage of the lowest registration fee, register online at www.humanbrainmapping.org/sanfrancisco <http://www.llmsi.com/index.php?cid=1411910&forward=2543>_2009_ by March, 15, 2009. Watch for an email announcing the opening of the registration site in January. The Program Committee (PC) of the Organization for Human Brain Mapping's goal is to keep rejection of abstracts low because it wishes to be inclusive. The policy for HBM 2009 will be to reject abstracts that are unethical, incomplete, or contain no data. Statements such as "results will be presented" are not acceptable. The PC also wants the number of posters to be at a level that will provide a positive viewing experience for the attendees. When submitting abstracts for HBM 2009, please consider whether multiple abstracts are truly necessary or if the data you are presenting could be accomplished via submission of one abstract. Thank you for assisting us in increasing the quality of the OHBM Annual Meeting. We look forward to welcoming you to HBM 2009. You can count on the traditional OHBM combination of exciting scientific programs and social events. Do plan to give yourself a little extra time to experience the city of San Francisco. This city by the sea is a bustling metropolis made famous by its most popular landmark, the Golden Gate Bridge. You won't be disappointed. The city has something for everyone. There is an excellent mix of art galleries, attractions, museums, quaint neighborhoods, unique shops, and many ethnic restaurants. For more information, please visit the conference website at www.humanbrainmapping.org/sanfrancisco <http://www.llmsi.com/index.php?cid=1411910&forward=2543>_2009_. The website will continually be updated as more information becomes available. If you have any questions, please contact us at info(a)humanbrainmapping.org <mailto:info@humanbrainmapping.org>. If you encounter issues with paying the abstract submission fee online or other technical glitches, please contact tech support at help(a)spltrak.com <mailto:help@spltrak.com>. Sincerely, Pietro Pietrini, Program Committee Susan Bookheimer, Local Organizing Chair Mark D'Esposito, Chair, OHBM To be removed from this mailing list, please click here. <http://www.llmsi.com/index.php?cid=1411910&src=broadcastemail&optoutall=582…> -- Gary Green York Neuroimaging Centre The Biocentre York Science Park Innovation Way Heslington York YO10 5DG http://www.ynic.york.ac.uk tel. 01904 435349 fax 01904 435356 mobile 07986 778954

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[Fwd: YNiC seminar Today
by Gary Green 11 Dec '08

11 Dec '08

Dear Users This week two members of YNiC staff will present updates on current research projects: 1) Garreth Prendergast "Alternative spatial filtering approaches" 2) Andre Gouws "Absence of large-scale cortical reorganisation in patients with macular degeneration". These talks will take place in YNiC from 4-5 pm. Everyone is welcome to attend. Best wishes Rebecca -- ************************************************************************ Dr. Rebecca E. Millman Science Liaison Officer York Neuroimaging Centre The Biocentre York Science Park Heslington YO10 5DG Tel: +44 (0) 1904 567614 Fax: +44 (0) 1904 435356 --

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YNiC seminar 11th December
by rem 08 Dec '08

08 Dec '08

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Might be of interest?
by Philip Quinlan 04 Dec '08

04 Dec '08

http://www.vislab.ucl.ac.uk/cogent.php ******************************************************************** Philip Quinlan E-Mail: ptq1(a)york.ac.uk Department of Psychology FAX: (01904) 433181 The University of York Tel: (01904) 430000 Ext. 3135 Heslington Direct : (01904) 433135 York YO10 5DD U.K. ********************************************************************

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seminars this week and next at ynic
by Gary Green 03 Dec '08

03 Dec '08

There is no seminar this week (Thursday the 4th). The next seminar will be on the 11th at 4pm. The talks will be 'Work in progress" by Garreth Prendergast and, separately, Andre Gouws They will cover recent work on MEG analysis and on fMRI. -- Gary Green York Neuroimaging Centre The Biocentre York Science Park Innovation Way Heslington York YO10 5DG http://www.ynic.york.ac.uk tel. 01904 435349 fax 01904 435356 mobile 07986 778954

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[Fwd: YNiC seminar 20th November]
by Gary Green 27 Nov '08

27 Nov '08

TODAY all welcome In this week's YNiC session (4-5pm) Gary Green will provide feedback from the Annual Users' Meeting, which was held in September. Items in the presentation will include: 1. Feedback of responses and actions that arose from the Annual Users' Meeting. 2. Work in progress in YNiC What research is going on The proposed training programme Changes to the infrastructure Details of the new database and booking system. Specific items that are supported by web based documentation are https://www.ynic.york.ac.uk/software https://www.ynic.york.ac.uk/user-resources/training/meg-operator-training

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