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The Power of Food Advertisements: A Brief Mindfulness Instruction Does Not Prevent Psychophysiological Responses Triggered by Food Ads
(MDPI AG, 2025-02-25)
Constanza Baquedano
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David Martinez-Pernia
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Vicente Soto
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Álvaro Rivera-Rei
;
Antonia Zepeda
Exposure to visually appealing food items can enhance their subjective realism, leading to increased cravings, salivation, and automatic approach tendencies. Prior research suggests that brief mindfulness instructions promoting dereification—recognizing stimuli as transient mental events—can mitigate these automatic reactions. Objectives: This study assesses whether brief mindfulness instruction can mitigate automatic consumption tendencies induced by food advertisements, exploring the corresponding behavioral, physiological, and neurophysiological mechanisms. Methods: Sixty participants were randomly assigned to two groups: one receiving brief mindfulness instruction and the other a non-dereifying control instruction while exposed to advertised foods. This was followed by an approach–avoidance task (AAT), during which behavioral data, salivary volume, event-related potentials (ERPs) from electroencephalogram recordings, and self-reports were collected. Results: The results showed no significant differences in approach behaviors between the groups. Hunger, food craving, and salivation levels increased uniformly in response to food cues for both groups. The N1, N2, P3, and late positive potential (LPP) ERPs remained unaltered by the instructions and consistent with the established AAT literature. Advertising heightened the appeal of neutral foods, as evidenced by increased N2, P3, and LPP responses. Conclusions: The brief mindfulness instruction failed to shield participants from the automatic responses elicited by food advertising, contrasting with the effects seen with non-advertised food.
4
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Impact of acute psychosocial stress on attentional control in humans. A study of evoked potentials and pupillary response
(2023)
F. Rojas-Thomas
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C. Artigas
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G. Wainstein
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Juan-Pablo Morales
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M. Arriagada
Scopus© Citations 9 1
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Another in need enhances prosociality and modulates frontal theta oscillations in young adults
(2023)
Claudio Lavín
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SOTO ICAZA, PATRICIA
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Vladimir López
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BILLEKE BOBADILLA, PABLO ERNESTO
Decision-making is a process that can be strongly affected by social factors. Evidence has shown how people deviate from traditional rational-choice predictions under different levels of social interactions. The emergence of prosocial decision-making, defined as any action that is addressed to benefit another individual even at the expense of personal benefits, has been reported as an example of such social influence. Furthermore, brain evidence has shown the involvement of structures such as the prefrontal cortex, anterior insula, and midcingulate cortex during decision settings in which a decision maker interacts with others under physical pain or distress or while being observed by others.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>Using a slightly modified version of the dictator game and EEG recordings, we tested the hypothesis that the inclusion of another person into the decision setting increases prosocial decisions in young adults and that this increase is higher when the other person is associated with others in need. At the brain level, we hypothesized that the increase in prosocial decisions correlates with frontal theta activity.</jats:p></jats:sec><jats:sec><jats:title>Results and Discussion</jats:title><jats:p>The results showed that including another person in the decision, setting increased prosocial behavior only when this presence was associated with someone in need. This effect was associated with an increase in frontocentral theta-oscillatory activity. These results suggest that the presence of someone in need enhances empathy concerns and norm compliance, raising the participants’ prosocial decision-making.
Scopus© Citations 8 1
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Ruta rápida versus ruta lenta: Evidencias electrofisiológicas y conductuales de las vías del procesamiento emocional
(2012)
CERIC GARRIDO, FRANCISCO JOSE
Scopus© Citations 6 1
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Vestibular loss disrupts visual reactivity in the alpha EEG rhythm
(2023)
Richard T Ibitoye
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CASTRO ABARCA, PATRICIA BERNARDITA
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Toby J. Ellmers
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Diego N. Kaski
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Adolfo M. Bronstein
Scopus© Citations 4 1
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Increase in Beta Power Reflects Attentional Top-Down Modulation After Psychosocial Stress Induction
(2021)
Ismael Palacios-García
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SILVA CONCHA, JAIME
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Mario Villena-González
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Germán Campos-Arteaga
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Claudio Artigas-Vergara
<jats:p>Selective attention depends on goal-directed and stimulus-driven modulatory factors, each relayed by different brain rhythms. Under certain circumstances, stress-related states can change the balance between goal-directed and stimulus-driven factors. However, the neuronal mechanisms underlying these changes remain unclear. In this study, we explored how psychosocial stress can modulate brain rhythms during an attentional task and a task-free period. We recorded the EEG and ECG activity of 42 healthy participants subjected to either the Trier Social Stress Test (TSST), a controlled procedure to induce stress, or a comparable control protocol (same physical and cognitive effort but without the stress component), flanked by an attentional task, a 90 s of task-free period and a state of anxiety questionnaire. We observed that psychosocial stress induced an increase in heart rate (HR), self-reported anxiety, and alpha power synchronization. Also, psychosocial stress evoked a relative beta power increase during correct trials of the attentional task, which correlates positively with anxiety and heart rate increase, and inversely with attentional accuracy. These results suggest that psychosocial stress affects performance by redirecting attentional resources toward internal threat-related thoughts. An increment of endogenous top-down modulation reflected an increased beta-band activity that may serve as a compensatory mechanism to redirect attentional resources toward the ongoing task. The data obtained here may contribute to designing new ways of clinical management of the human stress response in the future and could help to minimize the damaging effects of persistent stressful experiences.</jats:p>
13 1Scopus© Citations 48
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Multidimensional inhibitory signatures of sentential negation in behavioral variant frontotemporal dementia
(2022)
Mariano N Díaz-Rivera
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Agustina Birba
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Sol Fittipaldi
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Débora Mola
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Yurena Morera
<jats:title>Abstract</jats:title> <jats:sec> <jats:title>Background</jats:title> <jats:p>Processing of linguistic negation has been associated to inhibitory brain mechanisms. However, no study has tapped this link via multimodal measures in patients with core inhibitory alterations, a critical approach to reveal direct neural correlates and potential disease markers.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>Here we examined oscillatory, neuroanatomical, and functional connectivity signatures of a recently reported Go/No-go negation task in healthy controls and behavioral variant frontotemporal dementia (bvFTD) patients, typified by primary and generalized inhibitory disruptions. To test for specificity, we also recruited persons with Alzheimer's disease (AD), a disease involving frequent but nonprimary inhibitory deficits.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>In controls, negative sentences in the No-go condition distinctly involved frontocentral delta (2–3 Hz) suppression, a canonical inhibitory marker. In bvFTD patients, this modulation was selectively abolished and significantly correlated with the volume and functional connectivity of regions supporting inhibition (e.g. precentral gyrus, caudate nucleus, and cerebellum). Such canonical delta suppression was preserved in the AD group and associated with widespread anatomo-functional patterns across non-inhibitory regions.</jats:p> </jats:sec> <jats:sec> <jats:title>Discussion</jats:title> <jats:p>These findings suggest that negation hinges on the integrity and interaction of spatiotemporal inhibitory mechanisms. Moreover, our results reveal potential neurocognitive markers of bvFTD, opening a new agenda at the crossing of cognitive neuroscience and behavioral neurology.</jats:p> </jats:sec>
Scopus© Citations 18 4
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How to Do an Electrophysiological Study of Myoclonus
(2022)
VIAL UNDURRAGA, FELIPE AGUSTIN
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Shabbir Hussain I. Merchant
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Patrick McGurrin
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Mark Hallett
1Scopus© Citations 6
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BacAv, a new free online platform for clinical back-averaging
(2020)
VIAL UNDURRAGA, FELIPE AGUSTIN
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Sanaz Attaripour
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Patrick McGurrin
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Mark Hallett
Scopus© Citations 6 4
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A novel ITPA variant causes epileptic encephalopathy with multiple-organ dysfunction
(2020)
Masamune Sakamoto
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Den Kouhei
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Muzhirah Haniffa
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Sebastián Silva
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Mónica Troncoso
9Scopus© Citations 16

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