Equation 6 · Part 1 · What a Neural Recording Actually Records
Symbol y
What this part means
linear.
Its job in the formula
y is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol y→Article meaning
Where the article explains it
Writing it this way exposes what is being assumed rather than measured: that h is known, that it is the same across regions, subjects and states, and that the mapping from n to y is linear.
The passage around this formula
Writing it this way exposes what is being assumed rather than measured: that h is known, that it is the same across regions, subjects and states, and that the mapping from n to y is linear. Each of those is an approximation with documented exceptions.
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 article section
- [10] Neurophysiological investigation of the basis of the fMRI signal ↗
- [11] What we can do and what we cannot do with fMRI ↗
These citations provide research context; check each source for the exact claim it supports.