Brain dinamics associated with face-naming and the tip-of-the-tongue state

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ISSN: 0214-9915
E-ISSN: 1886-144X

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Colegio Oficial de Psicólogos del Principado
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Active brain areas and their temporal sequence of activation during the successful retrieval and naming of famous faces (KNOW) and during the tip-of-the-tongue (TOT) state were studied by means of low resolution electromagnetic tomographic analysis (LORETA) applied to event-related potentials. The results provide evidence that adequate activation of a neural network during the fi rst 500 ms following presentation of the photograph —mainly involving the posterior temporal region, the insula, lateral and medial prefrontal areas and the medial temporal lobe— is associated with successful retrieval of lexical-phonological information about the person’s name. Signifi cant differences between conditions were observed in the 538-698-ms interval; specifi cally there was greater activation of the anterior cingulate gyrus (ACC) towards the supplementary motor area (SMA) in the KNOW than in the TOT condition, possibly in relation to the motor response and as a consequence of the successful retrieval of lexical-phonological information about the person
Las áreas cerebrales más activas y su secuencia de activación durante el recuerdo y la denominación exitosa de caras (Condición SI) y durante el fenómeno de la punta de la lengua (Condición PDL) fueron estimadas a partir de potenciales evocados mediante tomografías electromagnéticas de baja resolución (LORETA). Los resultados muestran evidencia de que una adecuada activación de una red neural (estando principalmente implicadas áreas temporales posteriores, insula, áreas prefrontales mediales y laterales, y áreas temporales mediales) durante los primeros 500 ms después de la presentación de la cara está relacionada con la recuperación exitosa de información léxico-fonológica sobre el nombre de la persona. Además se obtuvieron diferencias significativas entre ambas condiciones en el intervalo 538-698 ms; concretamente, el giro cingulado anterior y el área motora suplementaria mostraron una mayor activación en la Condición SI que en la Condición PDL, posiblemente relacionada con la respuesta motora y como consecuencia de la recuperación exitosa de la información léxico-fonológica sobre la persona

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Galdo-Álvarez, S., Lindín, M., & Díaz, F. (2011). Brain dinamics associated with face-naming and the tip-of-the-tongue state. Psicothema, 23(2), 189-195

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This work was financially supported by the Spanish Ministerio de Educación y Ciencia (SEF2007-67964-C02-02), and Galician Consellería de Innovación e Industria (PGIDIT07PXIB211018PR)

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Copyright © 2011 Psicothema