0 a number on an X-axis that shows the coordinate of a point
1 the first number in a pair; a number on an X-axis (= line) that shows the coordinate (= place along that line) of a point
In the figure it will be noticed that the rising portion of the curve is somewhat steep, and the recovery convex to the abscissa, the fall being relatively rapid in its first, and less rapid in its later, parts.
In this cause-and-effect curve, the first part is slightly convex to the abscissa, the second straight and ascending, and the third concave.
The curve as a whole becomes, first slightly convex to the abscissa, then straight and ascending, and lastly concave.
The ordinate in these curves represents the E.M. variation, and the abscissa the time.
To provide for such cases the curve is drawn as if it never touched the abscissa.
The abscissa shows the change in response amplitude at the tuning peak during peripheral stimulation.
For different delays after stimulus onset (abscissa), responses in a 20-ms time window were averaged and compared.
The sharp spectral roll-off in this range exaggerates the ordinal error for a fixed abscissa.
