Alejandro Perez

Dr Alejandro Perez


About

Research

Research interests

Research projects

Teaching

Publications

Highlights

  1. Pérez, A; Davis, MH (2023) Speaking and listening to inter-brain relationships. Cortex, doi:10.1016/j.cortex.2022.12.002

  2. Pérez, A; Davis, MH (2022) Using earables platforms to study verbal communication. Introducing earables to psycholinguistic research. In Proceedings of the 2022 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp/ISWC ’22 Adjunct), September 11-15, 2022, Cambridge, United Kingdom. doi:10.1145/3544793.3563414

  3. Pérez, A; Davis, MH; Ince, RAA, Zhang, H; Fu, Z; Lamarca, M; Lambon Ralph, MA; Monahan, PJ (2022) Timing of brain entrainment to the speech envelope during speaking, listening and self-listening. Cognition, doi:10.1016/j.cognition.2022.105051

  4. Monahan, PJ; Schertz, J; Fu, Z; Pérez, A (2022) Unified Coding of Spectral and Temporal Phonetic Cues: Electrophysiological Evidence for Abstract Phonological Features. Journal of Cognitive Neuroscience, doi:10.1162/jocn_a_01817

  5. Pérez, A; Monahan, PJ; Lambon Ralph, MA (2021) Joint recording of EEG and audio signals in hyperscanning and pseudo-hyperscanning experiments. MethodsX, 8, 101347. doi:10.1016/j.mex.2021.101347

  6. Barraza, P; Pérez, A; Rodríguez, E (2020) Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality. Frontiers in Human Neuroscience, 14:295. doi:10.3389/fnhum.2020.00295 

  7. Liu, H; Zhang, M; Pérez, A; Xie, N; Li, B; Liu, Q (2019) Role of language control during interbrain phase synchronization of cross-language communication. Neuropsychologia, 131, 316-324. doi:10.1016/j.neuropsychologia.2019.05.014

  8. García-Pentón, L; Fernández, Y; Duñabeitia, JA; Pérez, A; Carreiras, M (2019) Neuroanatomical Correlates in Bilinguals: The Case of Children and Elderly. bioRxiv. doi:10.1101/586768

  9. Pérez, A & Duñabeitia, JA (2019) Speech perception in bilingual contexts: neuropsychological impact of mixing languages at the inter-sentential level. Journal of Neurolinguistics, 51, 258-267. doi:10.1016/j.jneuroling.2019.04.002

  10. Barraza, P; Dumas, G; Liu, H; Blanco-Gomez, G; van den Heuvel, MI; Baart, M; Pérez, A (2019) Implementing EEG hyperscanning setups. MethodsX, 6, 428-436. doi:10.1016/j.mex.2019.02.021

  11. Pérez, A; Dumas, G; Karadag, M; Duñabeitia, JA (2019) Differential brain-to-brain entrainment while speaking and listening in native and foreign languages. Cortex, 111, 303-315. doi:10.1016/j.cortex.2018.11.026

  12. Li, B; Liu, H; Pérez, A; Xie, N (2018) Cathodal transcranial direct current stimulation over right dorsolateral prefrontal cortex improves language control during language switching. Behavioural Brain Research, 351, 34-41. doi:10.1016/j.bbr.2018.05.026

  13. Martin, C; Niziolek, CA; Duñabeitia, JA; Pérez, A; Hernandez, D; Carreiras, M; Houde, JF (2018) Online Adaptation to Altered Auditory Feedback Is Predicted by Auditory Acuity and Not by Domain-General Executive Control Resources. Frontiers in Human Neuroscience, 12:91. doi:10.3389/fnhum.2018.00091

  14. Pérez, A; Carreiras, M; Duñabeitia, JA (2017) Brain-to-brain entrainment: EEG interbrain synchronization while speaking and listening. Scientific Reports, 7(1), 4190. doi:10.1038/s41598-017-04464-4

  15. Pérez, A; Carreiras, M; Gillon Dowens, M; Duñabeitia, JA (2015) Differential oscillatory encoding of foreign speech. Brain & Language, 147, 51-57. doi:10.1016/j.bandl.2015.05.008

  16. Casaponsa, A; Antón, E; Pérez, A; Duñabeitia, JA (2015) Foreign language comprehension achievement: insights from the cognate facilitation effect. Frontiers in Psychology, 6:588. doi:10.3389/fpsyg.2015.00588

  17. Acha, J; Pérez, A; Davidson, DJ; Carreiras, M (2015) Cognitive characterization of children with Dravet syndrome: A neurodevelopmental perspective. Child Neuropsychology, 21:5, 693-715, doi:10.1080/09297049.2014.959480

  18. Pérez, A; Gillon Dowens, M; Molinaro, N; Iturria-Medina, Y; Barraza, P; García-Pentón, L; Carreiras, M (2015) Complex brain network properties in late L2 learners and native speakers. Neuropsychologia, 68, 209-217. doi:10.1016/j.neuropsychologia.2015.01.021

  19. García-Pentón, L; Pérez, A; Iturria-Medina, Y; Gillon-Dowens, M; Carreiras, M (2014). Anatomical Connectivity Changes in the Bilingual Brain. NeuroImage, 84: 495-504. doi:10.1016/j.neuroimage.2013.08.064

  20. Pérez, A; García-Pentón, L; Canales-Rodríguez, EJ; Lerma-Usabiaga, G; Iturria-Medina, Y; Román, FJ; Davidson, DJ; Alemán-Gómez, Y; Acha, J; Carreiras, M (2014) Brain morphometry of Dravet Syndrome. Epilepsy Research, 108, 1326-1334. doi:10.1016/j.eplepsyres.2014.06.006

  21. Monsalve, IF; Pérez, A; Molinaro, N (2014) Item parameters dissociate between expectation formats: A regression analysis of time-frequency decomposed EEG data. Frontiers in Psychology, 5:847. doi:10.3389/fpsyg.2014.00847

  22. Molinaro, N; Barber, HA; Pérez, A; Parkkonen, L; Carreiras, M (2013) Left fronto-temporal dynamics during agreement processing: Evidence for feature-specific computations. Neuroimage, 78, 339-352. doi:10.1016/j.neuroimage.2013.04.025

  23. Pérez, A; Molinaro, N; Mancini, S; Barraza, P; Carreiras, M (2012) Oscillatory dynamics related to the Unagreement pattern in Spanish. Neuropsychologia, 50(11), 2584-2597. doi:10.1016/j.neuropsychologia.2012.07.009

  24. Iturria-Medina, Y; Pérez, A; Morris, DM, Canales, EJ; Haroon HA, García-Pentón, L; Augath, M; Galán, L; Logothetis, N; Parker, GJ; Melie, L (2011) Brain Hemispheric Structural Efficiency and Interconnectivity Rightward Asymmetry in Human and Nonhuman Primates. Cerebral Cortex, 21(1), 56-67. doi:10.1093/cercor/bhq058

  25. Iturria-Medina, Y; Pérez, A; Valdés, P; García-Pentón, L; Canales-Rodríguez, EJ; Melie, L; Lage, A; Ontivero, M (2011) Automated Discrimination of Brain Pathological State Attending to Complex Structural Brain Network Properties: the Shiverer Mutant Mouse Case. PLoS ONE, 6(5): e19071. doi:10.1371/journal.pone.0019071

  26. Pérez, A; García-Pentón, L; Valdés-Sosa, M; Jaśkowski, P (2011) Influence of the learnt direction of reading on temporal order judgments. Psychology, vol.2, No.2, 103-108. doi:10.4236/psych.2011.22017

  27. García-Pentón, L; Pérez, A; Bobes, MA; Acosta, Y; Galán L; Iturria-Medina, Y; Leh, SE; Valdés-Sosa, M (2010) Neural activation while perceiving biological motion in dynamic facial expressions and point-light body action animations. Neural Regeneration Research. 5 (14), 1076-1083. doi:10.3969/j.issn.1673-5374.2010.14.007

  28. Pérez, A; Peers, PV; Valdés-Sosa, M; Galán, L; García-Pentón, L; Martínez-Montes, E (2009) Hemispheric modulations of alpha-band power reflect the rightward shift in attention induced by enhanced attentional load. Neuropsychologia, 47, 41-49. doi:10.1016/j.neuropsychologia.2008.08.017

  29. Pérez, A; García-Pentón, L; Lage, A; Leh, SE; Valdés-Sosa, M (2008) Right impairment of temporal order judgments in dyslexic children. Laterality. Asymmetries of Body, Brain and Cognition, 13, 545-560. doi:10.1080/13576500802095790

  30. Pérez, A; García-Pentón, L; Valdés-Sosa, M (2008) Rightward shift in temporal order judgments in the wake of the attentional blink. Psicológica. International Journal of Methodology and Experimental Psychology, 29, 35-55. (pdf)

  31. Valdés-Sosa, M; Bobes, MA; Rodríguez, V; Acosta, Y; Pérez, A; Iglesias, J & Borrego, M (2004) The influence of scene organization on attention: Psychophysics and electrophysiology. In Kanwisher, N & Duncan, J (Eds.), Functional Neuroimaging of Visual Cognition. Attention and Performance XX (pp. 321-344). Oxford: Oxford University Press. (pdf)

Katherine Archila, Ana María Campos, Diana Lorena Lugo, Crispín Astolfo Celis, Sonia Moreno, Tomas Ramirez Reina, Alejandro Pérez-Flórez (2020)Influence of the active phase (Fe, Ni and Ni-Fe) of mixed oxides in CWAO of Crystal Violet, In: Catalysts MDPI

The catalytic oxidation of aqueous Crystal Violet (CV) solutions has been investigated using Ni and Fe catalysts supported over Mg-Al oxides synthetized by the auto-combustion method. The influence of temperature, loading and selectivity were studied in the catalytic wet air oxidation (CWAO) of CV. The kind of metal had an important contribution in the redox process, since significant differences between Fe, Ni and their mixtures were observed. The catalysts with only Fe as active phase were more efficient for the oxidation of CV under normal conditions (T = 25 °C and atmospheric pressure) compared to those containing Ni, revealing the influence of the transition metal on catalytic properties. It was found that iron containing materials displayed enhanced textural properties. The synthesis of Fe/MgAl catalysts by the auto-combustion method, leads to solids with excellent catalytic behavior, CV degradation of 100% in eight hours of reaction, 68% of selectivity to CO2 and significant reduction of COD (Chemical oxygen demand)

Katherine Archila, Ana María Campos, Lorena Lugo, Crispín Astolfo Celis, Sonia Moreno, Tomas Ramirez Reina, Alejandro Pérez-Flórez (2020)Influence of the Active Phase (Fe, Ni, and Ni–Fe) of Mixed Oxides in CWAO of Crystal Violet, In: Catalysts10(9) MDPI

The catalytic oxidation of aqueous crystal violet (CV) solutions was investigated using Ni and Fe catalysts supported over Mg–Al oxides synthesized by the autocombustion method. The influence of temperature, loading, and selectivity were studied in the catalytic wet air oxidation (CWAO) of CV. The kind of metal had an important contribution in the redox process as significant differences were observed between Fe, Ni, and their mixtures. The catalysts with only Fe as active phase were more efficient for the oxidation of CV under normal conditions (T = 25 °C and atmospheric pressure) compared to those containing Ni, revealing the influence of the transition metal on catalytic properties. It was found that iron-containing materials displayed enhanced textural properties. The synthesis of Fe/MgAl catalysts by the autocombustion method led to solids with excellent catalytic behavior, 100% CV degradation in eight hours of reaction, 68% selectivity to CO₂, and significant reduction of chemical oxygen demand (COD).

Alejandro Perez, Matthew H Davis (2023)Speaking and listening to inter-brain relationships, In: Cortex : a journal devoted to the study of the nervous system and behavior159pp. 54-63 Elsevier

Studies of inter-brain relationships thrive, and yet many reservations regarding their scope and interpretation of these phenomena have been raised by the scientific community. It is thus essential to establish common ground on methodological and conceptual definitions related to this topic and to open debate about any remaining points of uncertainty. We here offer insights to improve the conceptual clarity and empirical standards offered by social neuroscience studies of inter-personal interaction using hyperscanning with a particular focus on verbal communication.