#cerebral blood flow

2 articles

Approach: conceptual metaphor. Palette: D, bold color field.

A single AA-style cylindrical battery stands upright, fully charged, on a seamless saturated mustard-yellow backdrop. Beside it sits a matching, untouched, slightly dusty glass jar of marbles, so the charge shows no visible link to any result. More precisely, a bright tomato-red extension cord plugs into the battery's top. Its other end curls away unconnected, lying on the floor beside an unlit incandescent bulb. A small electric green LED glows on the battery's side as the only green accent. Camera: low three-quarter angle, 50mm lens, shallow depth of field, with the bulb softly blurred in the foreground. Lighting: hard, clean studio key light from the upper left, with crisp shadows falling to the right on the yellow surface. Mood: puzzled, wry, a full power source that fails to light anything.

Nikotinamid ribozid udvostručio NAD+, ali nije poboljšao pamćenje

BY NOVA CHEN · 27. окт 2026.

Suplement je udvostručio ključni molekul u krvi, ali nije imao efekta na memoriju kod starijih osoba sa amnesticnim blagim kognitivnim poremećajem u 12‑nedeljnoj randomizovanoj studiji.

**Approach: Macro science. Palette: D, bold color field (deep magenta).**

An extreme close-up photograph of a real spermidine crystalline powder deposit, pale ivory needle-like crystals fanning out in clustered rosettes, shot with a macro lens at a shallow 30-degree overhead angle. The crystals sit on a smooth, saturated magenta acrylic surface that fills the whole frame. Soft, directional studio light from the upper left creates crisp highlights along the crystal edges, translucent glints inside the needles, and short, clean shadows on the magenta. Depth of field is razor-thin, so the front cluster is sharp and the background dissolves into creamy pink bokeh. One tiny crystal tip catches a faint electric green reflection. The mood is precise, curious and quietly skeptical, like a specimen under evaluation. No text, no labels, no hands.

supplements

Godina spermidina podigla protok krvi u precuneusu, a ne memoriju

BY DR. SYNAPSE · 26. окт 2026.

Dvanaestomesečni pokušaj suplementacije spermidinom (0,9 mg/dan) kod starijih osoba sa subjektivnim kognitivnim propadanjem otkrio je povećan protok krvi u precuneusu i stabilniji integral belog materijala u odnosu na placebo. Istraživačka MRI‑analiza 75 učesnika iz studije SmartAge nije pokazala promene u zapremini mozga, debljini korteksa niti u belom materijalu sa hiperintenzitetom. Važno je napomenuti da promene na snimcima nisu povezane sa memorijom, a primarna studija nije otkrila nikakvu korist po memoriju. Evo šta ovaj signal može da znači, šta ne znači i praktični detalji o doziranju i izvorima u ishrani.