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The verb and noun test for peri-operative testing (VAN-POP): standardized language tests for navigated transcranial
Ann-Katrin Ohlerth1,2, Antonio Valentin3, Francesco Vergani4
1Center for Language and Cognition (CLCG), University of Groningen, Oude Kijk in 't Jatstraat 26, 9712 EK, Groningen, The Netherlands. a.ohlerth@rug.nl.
Background:
Protocols for intraoperative language mapping with direct electrical stimulation (DES) often include various language tasks triggering both nouns and verbs in sentences. Such protocols are not readily available for navigated transcranial magnetic stimulation (nTMS), where only single word object naming is generally used. Here, we present the development, norming, and standardization of the verb and noun test for peri-operative testing (VAN-POP) that measures language skills more extensively.
Methods:
The VAN-POP tests noun and verb retrieval in sentence context. Items are marked and balanced for several linguistic factors known to influence word retrieval. The VAN-POP was administered in English, German, and Dutch under conditions that are used for nTMS and DES paradigms. For each language, 30 speakers were tested.
Results:
At least 50 items per task per language were named fluently and reached a high naming agreement.
Conclusion:
The protocol proved to be suitable for pre- and intraoperative language mapping with nTMS and DES.
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