title: Brain dynamics associated with face-naming and the tip-of-the-tongue state.
abstract: 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 first 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. Significant differences between conditions were observed in the 538-698-ms interval; specifically 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.
authors.affiliation: Facultad de Psicología, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain. santiago.galdo@usc.es
authors.forename: Santiago
authors.initials: S
authors.lastname: Galdo-Álvarez
authors.forename: Mónica
authors.initials: M
authors.lastname: Lindín
authors.forename: Fernando
authors.initials: F
authors.lastname: Díaz
mesh_terms: D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D005071:Evoked Potentials; D005145:Face; D005260:Female; D006179:Gyrus Cinguli / Q000502:physiology; D006801:Humans; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D008959:Models, Neurological; D008960:Models, Psychological; D009044:Motor Cortex / Q000502:physiology; D009275:Names; D009415:Nerve Net / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D017397:Prefrontal Cortex / Q000502:physiology; D021641:Recognition, Psychology / Q000502:physiology*; D012984:Software; D018709:Statistics, Nonparametric; D013702:Temporal Lobe / Q000502:physiology; D013997:Time Factors; D014705:Verbal Behavior / Q000502:physiology*; D055815:Young Adult