From lpxcs10 at nottingham.ac.uk Thu Oct 6 10:02:54 2016 From: lpxcs10 at nottingham.ac.uk (Craig Scott) Date: Thu, 6 Oct 2016 09:02:54 +0000 Subject: [psychology-visionlist] REMINDER - External Talk Today In-Reply-To: References: Message-ID: Please see details below... Best wishes Craig ________________________________ From: Scott Craig Sent: Wednesday, September 28, 2016 10:22 PM To: psychology-visionlist at lists.nottingham.ac.uk Subject: External Talk - Thurs 6th Oct Hi all, Dr Mark Schira, from the University of Wollongong (Australia), will be giving a talk at the Sir Peter Mansfield Centre at 1PM next Thursday the 6th Oct. He will be presenting his work on: Natural images, fractal distributions and modeling fMRI in early visual cortex In the last couple of years the basis for modeling fMRI measurements in early visual cortex have come together. Accurate algebraic models of the retinocotical projection and sophisticated spatiotemporal BOLD modeling have provided the corner stones to generate concrete predictions of BOLD responses in time and cortical space. However, the effects of cortical visual processing on BOLD amplitude is still rather crudely understood, barely beyond a crude contrast to BOLD amplitude function. We have investigated the effect that frequency and fractal distributions have on cortical BOLD responses. It is well known that natural images share a specific frequency distribution often simplified referred to as 1/f distribution. This describes the observation that in natural images, spatial frequencies are not equally frequent, as they are for example in white noise. Instead, there is high energy at low spatial frequencies and less energy at higher spatial frequency, where the distribution roughly falls on a line, with typical slope between -0.75 and -1.25. What is less known is if and how responses in visual cortex are adapted to this property of our environment. It is also less known that the fractal properties of natural scenes are even more stable. We tested the responses in early visual cortex using filtered and thresholded natural noise images, manipulating the slope of the 1/f distribution and the fractal dimension D (Mandelbrot 1982). We found that early visual cortex responds maximally to naturalistic noise images specifically to it's fractal dimension. We found that frequency distribution and fractal dimension determine the BOLD response as strongly as contrast. Mark will also be visiting the School of Psychology on Wednesday the 5th Oct, and would be happy to meet people within our group perhaps over lunch. Should you wish to contact him his email is mark.schira at gmail.com. Best Wishes Craig -------------- next part -------------- An HTML attachment was scrubbed... URL: From Andrew.Astle at nottingham.ac.uk Tue Oct 11 10:18:59 2016 From: Andrew.Astle at nottingham.ac.uk (Andrew Astle) Date: Tue, 11 Oct 2016 09:18:59 +0000 Subject: [psychology-visionlist] Jonathan's last day: 20th Oct Message-ID: Morning All, It?s Jonathan Denniss?s last day in Nottingham a week on Thursday (20th Oct). A few of us will be going for a drink after work that day and then into town for food afterwards. Please come along to wish him farewell. Cheers, Andrew From Chris.Scholes at nottingham.ac.uk Wed Oct 12 15:59:13 2016 From: Chris.Scholes at nottingham.ac.uk (Chris Scholes) Date: Wed, 12 Oct 2016 14:59:13 +0000 Subject: [psychology-visionlist] Present and card for Jonathan Denniss In-Reply-To: References: Message-ID: Further to Andy?s message (below), there will be a card and large bucket in our office if people wish to donate cash money towards a leaving gift for Jonathan. The closing date for donations will be next Wednesday. Cheers, Chris > On 11 Oct 2016, at 10:18, Andrew Astle wrote: > > Morning All, > It?s Jonathan Denniss?s last day in Nottingham a week on Thursday (20th Oct). > A few of us will be going for a drink after work that day and then into town for food afterwards. > Please come along to wish him farewell. > Cheers, > Andrew > _______________________________________________ > Psychology-visionlist mailing list > Psychology-visionlist at lists.nottingham.ac.uk > http://lists.nottingham.ac.uk/mailman/listinfo/psychology-visionlist From Denis.Schluppeck at nottingham.ac.uk Thu Oct 13 16:11:41 2016 From: Denis.Schluppeck at nottingham.ac.uk (Denis Schluppeck) Date: Thu, 13 Oct 2016 15:11:41 +0000 Subject: [psychology-visionlist] vision group coffee Message-ID: <5053AC66-5A57-4667-9CA4-3F56AE83C689@nottingham.ac.uk> hi everyone, ? i?ve organized a replacement espresso machine for the vision group (and chris and help managed to clear out the room so it can be used). the old machine broke down sometime during the summer... two things 1 - if the PIs sponsor the coffee beans on a regular basis, I?d like to hand over responsibility for de-scaling the machine (once every few weeks) to an expert team of PhD students and post-docs. That will ensure that this version of the espresso machine will have a long and healthy career de-grumping the vision group? Does that sounds like a symbiosis that could work? If yes, volunteers for organizing the de-scaling? 2 - should we think of making that room a bit nicer for grabbing a coffee and a chat? When visitors come it?s nice to be able to sit down in a non-office room and chat. I say, we put some nice pictures, art, photographs, drawings, posters ?? Some Ikea frames around some nice photos would be kind of cool and quirky. (a sofa? getting rid of the desk) - what do people think? Ttys, Denis .. Denis Schluppeck denis.schluppeck at nottingham.ac.uk -------------- next part -------------- An HTML attachment was scrubbed... URL: From lpxcs10 at nottingham.ac.uk Mon Oct 24 09:33:35 2016 From: lpxcs10 at nottingham.ac.uk (Craig Scott) Date: Mon, 24 Oct 2016 08:33:35 +0000 Subject: [psychology-visionlist] Vision Group Talk this Thursday Message-ID: Morning all, This week Prof. Walker from the Division of Child Health will be presenting his work on brain tumours affecting sight in child development. The talk will take place this Thursday the 27th, 4-5PM in room A28 in the School of Psychology. Hope to see you all there (I'll bring cake!). Best wishes Craig -------------- next part -------------- An HTML attachment was scrubbed... URL: From lpxcs10 at nottingham.ac.uk Thu Oct 27 07:49:29 2016 From: lpxcs10 at nottingham.ac.uk (Craig Scott) Date: Thu, 27 Oct 2016 06:49:29 +0000 Subject: [psychology-visionlist] A reminder that... In-Reply-To: References: Message-ID: ... we have Prof. David Walker presenting today. Please see details below. Looking forward to seeing you all there. Craig ________________________________ From: Scott Craig Sent: Monday, October 24, 2016 9:33 AM To: psychology-visionlist at lists.nottingham.ac.uk; Dineen Robert; Walker David; Papini Chiara Subject: Vision Group Talk this Thursday Morning all, This week Prof. Walker from the Division of Child Health will be presenting his work on brain tumours affecting sight in child development. The talk will take place this Thursday the 27th, 4-5PM in room A28 in the School of Psychology. Hope to see you all there (I'll bring cake!). Best wishes Craig -------------- next part -------------- An HTML attachment was scrubbed... URL: From lpxcs10 at nottingham.ac.uk Thu Oct 27 15:18:25 2016 From: lpxcs10 at nottingham.ac.uk (Craig Scott) Date: Thu, 27 Oct 2016 14:18:25 +0000 Subject: [psychology-visionlist] Talk starting soon In-Reply-To: References: , Message-ID: ________________________________ From: Scott Craig Sent: Monday, October 24, 2016 9:33 AM To: psychology-visionlist at lists.nottingham.ac.uk; Dineen Robert; Walker David; Papini Chiara Subject: Vision Group Talk this Thursday Morning all, This week Prof. Walker from the Division of Child Health will be presenting his work on brain tumours affecting sight in child development. The talk will take place this Thursday the 27th, 4-5PM in room A28 in the School of Psychology. Hope to see you all there (I'll bring cake!). Best wishes Craig -------------- next part -------------- An HTML attachment was scrubbed... URL: