title: Cue validity probability influences neural processing of targets.
abstract: The neural bases of the so-called Spatial Cueing Effect in a visuo-auditory version of the Central Cue Posneŕs Paradigm (CCPP) are analyzed by means of behavioral patterns (Reaction Times and Errors) and Event-Related Potentials (ERPs), namely the Contingent Negative Variation (CNV), N1, P2a, P2p, P3a, P3b and Negative Slow Wave (NSW). The present version consisted of three types of trial blocks with different validity/invalidity proportions: 50% valid - 50% invalid trials, 68% valid - 32% invalid trials and 86% valid - 14% invalid trials. Thus, ERPs can be analyzed as the proportion of valid trials per block increases. Behavioral (Reaction Times and Incorrect responses) and ERP (lateralized component of CNV, P2a, P3b and NSW) results showed a spatial cueing effect as the proportion of valid trials per block increased. Results suggest a brain activity modulation related to sensory-motor attention and working memory updating, in order to adapt to external unpredictable contingencies.
authors.affiliation: Human Psychobiology Lab, Experimental Psychology Department, University of Seville, C/Camilo José Cela s/n, 41018, Sevilla, Spain. Electronic address: aarjona@us.es.
authors.forename: Antonio
authors.initials: A
authors.lastname: Arjona
authors.affiliation: Neuroscience and Behaviour Group, Department of Physiology, University of Seville, Avda. Reina Mercedes 6, 41012, Sevilla, Spain. Electronic address: mescudero@us.es.
authors.forename: Miguel
authors.initials: M
authors.lastname: Escudero
authors.affiliation: Human Psychobiology Lab, Experimental Psychology Department, University of Seville, C/Camilo José Cela s/n, 41018, Sevilla, Spain. Electronic address: cgomez@us.es.
authors.forename: Carlos M
authors.initials: CM
authors.lastname: Gómez
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001288:Attention / Q000502:physiology*; D003265:Contingent Negative Variation / Q000502:physiology*; D003463:Cues; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011336:Probability; D011930:Reaction Time / Q000502:physiology*; D055815:Young Adult
keywords: Attention; Cueing effect; Posner’s paradigm; Updating of priors; Validity probability