WikiMechanics

$\varepsilon \equiv 2 \left| \, \delta^{*} \vphantom{X^{X^{X}}} \right| -1$

where $\delta^{\ast}$ notes the oddness. Recall that this quantity $\delta^{\ast}$ is given by

$\delta^{*} \equiv \begin{cases} +1 &\sf{\text{if a somatic sensation is on the left side }} \\ \; \; 0 &\sf{\text{if a sensation is not somatic }} \\ -1 &\sf{\text{if a somatic sensation is on the right side }} \end{cases}$

Then the audibility takes on the values

$\varepsilon = \begin{cases} +1 &{\sf{\text{if a sensation is somatic}}} \\ -1 &{\sf{\text{if a sensation is not somatic}}} \end{cases}$

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