Table 1

Examples of the methods used to elicit the palmomental reflex

Author and referenceMethodDefinition of a positive response
Little and Masotti5Firmly scratching thenar eminence with an applicator stickContraction of mentalis muscle on two or more occasions
Jacobs and Gossman6Briskly stroking along the thenar eminence with a keyContraction of ipsilateral mentalis muscle
Marti-Vilalta and Graus7Stroking the thenar eminence with the nail of the index finger by two examiners on different occasionsWeak or strong contraction of the mentalis muscle
Otomo8Stroking the thenar eminence with a keyFive successive contractions of the mentalis muscle