[visionlist] LCD Monitors suitable with suitable temporal response

Phillip Guan philguan at berkeley.edu
Tue Feb 28 20:33:03 EST 2017


Nic you've summed up a lot of what we were afraid of. We are interested in
presenting moving stimuli at high contrast (full white on black) and
require a low persistence display that will introduce minimal motion
artifacts as we present moving stimuli over the entire display area.
Fortunately we don't really care about color or grayscale. One new
technology that seemed promising compared to last time I looked into LCDs
is nVidia's implementation of something called ultra low motion blur or
ULMB for short (http://www.144hzmonitors.com/g-sync-ulmb/). Do you have any
experience with this tech?

-Phil

On Tue, Feb 28, 2017 at 3:59 PM, Nicholas Price <nicholas.price at monash.edu>
wrote:

> Hi Phillip,
>
> What you can accept in terms of LCDs really depends on your requirements.
> If you just want a reliable 120 Hz update, then there are plenty of
> gaming-level LCD monitors that won't drop frames. That's the easy part of
> monitor characterisation though.
>
> Apart from the Display++ and ViewPixx (which are both excellent, and no I
> don't have an interest in either company) we haven't found any non-CRTs
> that meet our relatively simple requirements of:
> - Uniform luminance and contrast across the entire monitor surface, from a
> wide range of viewing angles
> - Rapid onset and offset, such that you get good luminance and contrast
> control for single frame stimuli.
>
> If you're just interested in reliable 120 Hz to present long-duration,
> non-moving stimuli, you have plenty of options. If you want static stimuli
> that are presented for 3+ frames, then you're also reasonably safe. If you
> want moving stimuli, as long as you don't care about contrast too much,
> then I think you're also safe. If you care about contrast, then make sure
> your stimuli are small and always presented in a small part of the monitor
> so you don't get viewing angle artefacts. At this stage, I don't care about
> colourful things, so you're on your own there!
>
> Basically, whatever monitor you get, you'll still need to characterise its
> timing and luminance outputs (at a minimum). For my money, it's worth the
> investment in a Display++ or a ViewPixx.
>
> nic
>
> On 1 March 2017 at 09:55, Phillip Guan <philguan at berkeley.edu> wrote:
>
>> Hello,
>>
>> I'm wondering if there are alternatives to CRTs and the ViewPixx3D
>> ($12,000 each) displays that can be used when fast response times are
>> required for temporally varying stimuli. From this paper
>> https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4369646/ it seems that
>> certain gaming monitors may be approaching the required quality level, are
>> there any specific high framerate gaming panels that have come out in the
>> last two years that approach parity with CRTs?
>>
>> Thanks,
>>
>> Phillip Guan
>>
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>>
>
>
> --
> Dr Nicholas Price
> Phone: +61 3 9905 5131 <+61%203%209905%205131> / 0424 56 14 17
>
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