Sky Glass is a big product for the UK satellite TV giant. Not only is it the first TV the company has built, it’s also the first time Sky has produced a streaming-only product without compromising streaming quality and features. To compare between each pair of color channels directly, we computed dependent-samples correlations ( Williams, 1959; Steiger, 1980), as recommended by Steiger (1980), which tested the hypothesis that a pair of color channels was equally correlated with pupil size using a t-distribution. This statistical test is appropriate in such cases when two repeated-measures variables (i.e., two color channels) derived from the same individual are correlated with a third variable (i.e., pupil size). High t-values provide evidence to reject the null hypothesis and indicate a significant difference in the strength of the correlation between pupil size and one color channel vs. another color channel. You can turn this feature off in the settings if it starts to irritate. Sound issues with Sky Glass These factors, combined with its excellent safety profile and minimal cardiorespiratory effects, 10 offer flexibility for endoscopy to safely expand beyond the traditional boundaries of the endoscopy unit and into novel outpatient spaces.

In classic cognitive pupillometry studies, it has been critical to equate luminance across stimuli and/or experimental conditions to isolate cognitive influences on pupil size and ensure that results are not driven by confounds due to variable luminance. While this careful control of luminance has led to a great deal of knowledge about the relationship between pupil size and cognition ( Aston-Jones and Cohen, 2005; Sirois and Brisson, 2014; Mathôt, 2018; Hoffing et al., 2020; Joshi and Gold, 2020), it also limits the ability to generalize research findings to contexts in which luminance cannot be controlled. For example, it would be unfeasible to control for luminance in real-world tasks and would impede the study of naturalistic gaze behavior in experiments using complex stimuli, to replicate the spatial variation in local contrast and luminance that occurs in the natural world ( Frazor and Geisler, 2006). At the end of 2022, Sky announced a firmware update for all Glass TVs that it said would improve picture quality. As such, we’ve retested the TV and have updated our findings below. It still isn’t quite the best TV you’ll find for the money but HDR performance is now far better and colour accuracy is excellent across the board. As a result, we’ve upgraded Sky Glass to a four star rating with a Recommended award. The Sky Glass also has a built-in soundbar which sits under the screen, comprising six speakers and a subwoofer. It's rare to see a dedicated, front-firing speaker section like this on TVs - typically they're behind the screen and point downwards.

It’s important to note that Sky Glass does not record TV to local storage like Sky Q. Instead, users add the content they want to watch later to their “Playlist”, where it becomes accessible depending on the restrictions of the streaming/catchup service it first appeared on. First time on forum, and tought I would share my experience of upgrading the HDD on my Sky HD box (blue screen experience below). To confirm this finding and evaluate whether the “blue sky effect” has a more generalized effect on the PLR, we ran a second experiment with a controlled task to assess whether the PLR is indeed stronger, specifically, when blue is seen above fixation. The experimental procedure was careful to match the luminance level across color stimuli (gray, blue, red, and green). The only variables that were manipulated on each trial were the color presented (paired with gray) and its location (on top, bottom, left, or right). Results showed that the PLR was indeed stronger for blue stimuli in comparison to green and red, which replicates results from prior studies ( Suzuki et al., 2019). Importantly, the results also showed a specific effect in which the PLR was strongest when blue was presented on top compared to on bottom. There were no other statistically significant effects associated with the relative location of other color stimuli. This result provides additional support to the blue sky hypothesis, suggesting that the PLR is influenced most strongly by blue light, and in particular, when blue light is present above fixation. We hypothesized a foveal bias in the correlation maps, consistent with research showing that stimuli nearer to fovea induce stronger PLRs than stimuli in the periphery ( Crawford and Parsons, 1936; Legras et al., 2018; Hu et al., 2020). This prediction is also related to the structure of the human visual system as the distribution of photoreceptors changes dramatically as a function of distance from the fovea, and there are significant differences in visual function between foveal, parafoveal, and the peripheral regions ( Preuschoff et al., 2011; Strasburger et al., 2011). Previous research has shown that cone mediated pupil responses to photopic light (i.e., simple circular patches of light stimulus) are maximal up to 7 degrees of visual angle, and has reasoned that the decrease in response may be due to the drop off in cone density after 7 degrees ( Legras et al., 2018; Kelbsch et al., 2019). Our data, however, did not support this hypothesis, instead revealing a robust and unpredicted pattern in the correlation maps. Pixels very close to gaze position actually tended to correlate the least strongly with pupil size. This pattern was most prominent for the red channel, in which all of the pixels within about 2–3 degrees from fixation were not significantly associated with pupil size, but it was also apparent in the blue and green channels. Blue Sky Effect We used gaze position data output from the Tobii Pro Spectrum to extract local image statistics in relation to gaze position over time. Signal loss due to blinks and dropouts in the gaze position data corresponded to 13.9% (STD=11%) of the data overall. The range of missing data due to signal loss across subjects was 2.4–41.1%. To investigate whether this data loss influenced the reported pattern of results, we analyzed data from the subset of 29 subjects that had less than 25% data loss (omitting the five subjects with greater than 25% data loss) and the overall pattern and statistical significance of group results were not affected whether including or excluding these subjects. Thus, these subjects were included in the presented results.

What size TV should I buy? Find out which screen size is ideal for your living room as well as our favourite TVs at each sizeThe studies involving human participants were reviewed and approved by ARL Institutional Review Board. The patients/participants provided their written informed consent to participate in this study. Author Contributions The present study aims to further our understanding of pupillary dynamics in a visually rich environment that involves an unconstrained navigation and visual search task in a 3D virtual environment (VE). Specifically, we focus on understanding how visual patterns modulate pupil size, where luminance changes dynamically over time even while behaviors and cognitive processes may also be concomitantly influencing pupil size. We investigated the influence of the spatial location of luminance in relation to the fovea as well as the spectral wavelength on pupil size changes. We hypothesized that the influence of luminance on pupil size would be greatest for pixels near the fovea and would reduce with eccentricity in a radial manner. This hypothesis is consistent with previous work indicating that the strength of the PLR is reduced as a function of eccentricity ( Crawford and Parsons, 1936; Legras et al., 2018; Hu et al., 2020), which may be attributed to the diminishing distribution of photoreceptors farther away from the fovea. We also hypothesized that the relationship between luminance and pupil size would vary by wavelength, consistent with prior work indicating that blue colored light is perceived as being brighter ( Suzuki et al., 2019) and can have a distinct influence on the PLR ( Bonmati-Carrion et al., 2016). To investigate both hypotheses, we examined correlations between pupil size and intensities in the red, green, and blue (RGB) color channels derived from the sequence of images seen on the screen throughout the task. We computed pixel-wise correlation maps to visualize the correlation between pupil size and every pixel in a broad window (approximately 14 degrees visual angle) surrounding gaze position. One thing you might want to disable, however, is the TV’s motion control sensor, which it uses to turn on the TV when you walk into the room. This might sound like a clever feature but you don’t always want the TV to switch on when you walk into the room, especially with energy prices so high. I also found that, if I left the door open to the room it was in, it would also turn on when I walked past. That’s not ideal. What Sky is pushing quite strongly is voice control and on Sky Glass, it’s built into the TV as well as the remote control. Indeed, using a far-field microphone array, Glass can detect the wake phrase “Hello Sky” and act on your instructions without you having to touch the remote control. Reduce financial crimes compliance risk with LexisNexis® Financial Crime Digital Intelligence Learn More