← All parts of this equation

Equation 7 · Part 1 · What a Neural Recording Actually Records

Symbol n

nn
nn

What this part means

n is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

n is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

The empirical question of what n should be was addressed directly by Logothetis, Pauls, Augath, Trinath and Oeltermann, who recorded neural signals and BOLD simultaneously in monkey visual cortex. They found that local field potentials gave a better estimate of the BOLD response than multi-unit spiking did, and that at recording…

Read this part in the article →

Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

Open the illustrated variables: a letter stands for a value guide →

See this notation across published equations →

Sources cited in the surrounding passage

These citations provide research context; check each source for the exact claim it supports.