max

@redcathode.bsky.social

66 Followers 137 Following

hiya! i'm max. i talk about many things seldom-updated website: https://redcatho.de [he, 19]

a 7.5x10 inch protoboard with around 600 5mm LEDs sits on a wooden table next to a pair of flush cuts and a bowl of discarded LED leads
1 hr, 5 min of screen time, most of it split between phone, YouTube, and bluesky the day is suspiciously the lowest by far on the bar chart for the week
METHODS. Thirty-nine participants were exposed to 60 minutes of either continuous light (n = 8) or sequences of 2-millisecond light flashes (n = 31) with different interstimulus intervals (ISIs; ranging from 2.5 to 240 seconds). Melatonin phase shift and suppression, along with changes in alertness and sleepiness, were assessed. RESULTS. We determined that the human circadian system integrates flash sequences in a nonlinear fashion with a linear rise to a peak response (ISI = 7.6 ± 0.53 seconds) and a power function decrease following the peak of responsivity. At peak ISI, flashes were at least 2-fold more effective in phase delaying the circadian system as compared with exposure to equiluminous continuous light 3,800 times the duration. Flashes did not change melatonin concentrations or alertness in an ISI-dependent manner. CONCLUSION. We have demonstrated that intermittent light is more effective than continuous light at eliciting circadian changes. These findings cast light on the phenomenology of photic integration and suggest a dichotomous retinohypothalamic network leading to circadian phase shifting and other NIF photoresponses. Further clinical trials are required to judge the practicality of light flash protocols.
pic of my room. you can see the corner of a bamboo scaffold close to my ceiling, carrying ziptie-laden bundles of wire and water cooling lines. there's one high-power LED visible in frame, of a total of 12. also visible is a pump, fan, water cooling reservoir, and a variac with a stepper motor mounted to the top of it