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Author Nachshon Meiran

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The effect of a high-polyphenol Mediterranean diet (GREEN-MED) combined with physical activity on age-related brain atrophy: the DIRECT PLUS randomized controlled trial.

Alon Kaplan, Hila Zelicha, Anat Yaskolka Meir, Ehud Rinott, Gal Tsaban, Gidon Levakov, Ofer Prager, Moti Salti, Yoram Yovell, Jonathan Ofer, Sebastian Huhn, Frauke Beyer, Veronica Witte, Arno Villringer, Nachshon Meiran, Tamar Bakun Emesh, Peter Kovacs, Martin von Bergen, Uta Ceglarek, Matthias Blüher, Michael Stumvoll, Frank B Hu, Meir J Stampfer, Alon Friedman, Ilan Shelef, Galia Avidan, Iris Shai,

<h4>Background</h4>The effect of diet on age-related brain atrophy is largely unproven.<h4>Objective</h4>To explore the effect of a Mediterranean diet higher in polyphenols and lower in red/processed meat (Green-MED diet) on age-related brain atrophy.<h4>Methods</h4>This 18-month clinical trial longitudinally measured brain structure volumes by magnetic-resonance-imaging using hippocampal-occupancy (HOC) and lateral-ventricle-volume (LVV) expansion scores ... Read more >>

Am J Clin Nutr (The American journal of clinical nutrition)
[2022, :]

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Perspectives, they might be a-changin': A proactive-control take on the cognitive cost of maintaining one's own perspective.

Tali Kleiman, Nachshon Meiran, Tal Eyal,

The world abounds with different perspectives, which necessitates balancing between maintaining the currently relevant perspective and flexibly switching between perspectives, if needed. Employing the distinction between reactive and proactive control (Braver, 2012), we argue that previous research on perspective-taking has mainly looked at the cost of activating reactive control to ... Read more >>

J Exp Psychol Gen (Journal of experimental psychology. General)
[2021, :]

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Cognitive appraisal contributes to feeling generation through emotional evidence accumulation rate: Evidence from instructed fictional reappraisal.

Ella Singer-Landau, Nachshon Meiran,

How do (reportable) emotional feelings come to be? Following William James and many others, Givon et al. (2020) described the generation of feelings as evidence accumulation toward a boundary. In this work, we began clarifying the nature of "evidence". In two preregistered experiments, participants were presented with normed emotion-evoking negative/positive ... Read more >>

Emotion (Emotion (Washington, D.C.))
[2021, 21(7):1366-1378]

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Automatic effects of instructions: a tale of two paradigms.

Inbar Amir, Liran Peleg, Nachshon Meiran,

When examining rapid instructed task learning behaviorally, one out of two paradigms is usually used, the Inducer-Diagnostic (I-D) and the NEXT paradigm. Even though both paradigms are supposed to examine the same phenomenon of Automatic Effect of Instructions (AEI), there are some meaningful differences between them, notably in the size ... Read more >>

Psychol Res (Psychological research)
[2021, :]

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Correction to: Enhancing task‑demands disrupts learning but enhances transfer gains in short‑term task‑switching training.

Katrina Sabah, Thomas Dolk, Nachshon Meiran, Gesine Dreisbach,

Psychol Res (Psychological research)
[2021, 85(6):2483]

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Learning the Abstract General Task Structure in a Rapidly Changing Task Content.

Maayan Pereg, Danielle Harpaz, Katrina Sabah, Mattan S Ben-Shachar, Inbar Amir, Gesine Dreisbach, Nachshon Meiran,

The ability to learn abstract generalized structures of tasks is crucial for humans to adapt to changing environments and novel tasks. In a series of five experiments, we investigated this ability using a Rapid Instructed Task Learning paradigm (RITL) comprising short miniblocks, each involving two novel stimulus-response rules. Each miniblock ... Read more >>

J Cogn (Journal of cognition)
[2021, 4(1):31]

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Retest Reliability of Integrated Speed-Accuracy Measures.

Tamar Bakun Emesh, Dror Garbi, Alon Kaplan, Hila Zelicha, Anat Yaskolka Meir, Gal Tsaban, Ehud Rinott, Nachshon Meiran,

Cognitive tasks borrowed from experimental psychology are often used to assess individual differences. A cardinal issue of this transition from experimental to correlational designs is reduced retest reliability of some well-established cognitive effects as well as speed-accuracy trade-off. The present study aimed to address these issues by examining the retest ... Read more >>

Assessment (Assessment)
[2021, :1073191120985609]

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Neural correlates of future weight loss reveal a possible role for brain-gastric interactions.

Gidon Levakov, Alon Kaplan, Anat Yaskolka Meir, Ehud Rinott, Gal Tsaban, Hila Zelicha, Nachshon Meiran, Ilan Shelef, Iris Shai, Galia Avidan,

Lifestyle dietary interventions are an essential practice in treating obesity, hence neural factors that may assist in predicting individual treatment success are of great significance. Here, in a prospective, open-label, three arms study, we examined the correlation between brain resting-state functional connectivity measured at baseline and weight loss following 6 ... Read more >>

Neuroimage (NeuroImage)
[2021, 224:117403]

Cited: 3 times

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Simple Control.

Nachshon Meiran,

J Cogn (Journal of cognition)
[2020, 3(1):26]

Cited: 1 time

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Enhancing task-demands disrupts learning but enhances transfer gains in short-term task-switching training.

Katrina Sabah, Thomas Dolk, Nachshon Meiran, Gesine Dreisbach,

Content variability was previously suggested to promote stronger learning effects in cognitive training whereas less variability incurred transfer costs (Sabah et al. Psychological Research, https://doi.org/10.1007/s00426-018-1006-7 , 2018). Here, we expanded these findings by additionally examining the role of learners' control in short-term task-switching training by comparing voluntary task-switching to a ... Read more >>

Psychol Res (Psychological research)
[2021, 85(4):1473-1487]

Cited: 2 times

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Power of instructions for task implementation: superiority of explicitly instructed over inferred rules.

Maayan Pereg, Nachshon Meiran,

"Power of instructions" originally referred to automatic response activation associated with instructed rules, but previous examination of the power of instructed rules in actual task implementation has been limited. Typical tasks involve both explicit aspects (e.g., instructed stimulus-response mapping rules) and implied, yet easily inferred aspects (e.g., be ready, attend ... Read more >>

Psychol Res (Psychological research)
[2021, 85(3):1047-1065]

Cited: 1 time

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Rapid instructed task learning (but not automatic effects of instructions) is influenced by working memory load.

Maayan Pereg, Nachshon Meiran,

The ability to efficiently perform actions immediately following instructions and without prior practice has previously been termed Rapid Instructed Task Learning (RITL). In addition, it was found that instructions are so powerful that they can produce automatic effects, reflected in activation of the instructions in an inappropriate task context. RITL ... Read more >>

PLoS One (PloS one)
[2019, 14(6):e0217681]

Cited: 5 times

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Effects of neurofeedback and working memory-combined training on executive functions in healthy young adults.

Shirley Gordon, Doron Todder, Inbal Deutsch, Dror Garbi, Oren Alkobi, Oren Shriki, Anat Shkedy-Rabani, Nitzan Shahar, Nachshon Meiran,

Given the interest in improving executive functions, the present study examines a promising combination of two training techniques: neurofeedback training (NFT) and working memory training (WMT). NFT targeted increasing the amplitude of individual's upper Alpha frequency band at the parietal midline scalp location (Pz), and WMT consisted of an established ... Read more >>

Psychol Res (Psychological research)
[2020, 84(6):1586-1609]

Cited: 2 times

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A signal-detection approach to individual differences in negative feeling.

Anat Karmon-Presser, Nachshon Meiran,

Feeling is an important aspect of core personality traits and affective-style. Here we implemented a new signal-detection-theory based model for feeling generation, involving two parameters: <i>report-criterion</i> (<i>c</i>), the level above which enough emotional evidence has gathered for intense feeling to appear, and <i>evidence-differentiation</i> (<i>d</i> <sub><i>a</i></sub> ), the ability to <i>emotionally</i> ... Read more >>

Heliyon (Heliyon)
[2019, 5(4):e01344]

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How does the emotional experience evolve? Feeling generation as evidence accumulation.

Ella Givon, Ayelet Itzhak-Raz, Anat Karmon-Presser, Gal Danieli, Nachshon Meiran,

How do people answer the question "How do you feel?" In the present work, participants were given 2 tasks in each trial. They first indicated whether a picture made them feel pleasant (or was supposed to be felt as pleasant, in another group), and then made gender decisions regarding faces. ... Read more >>

Emotion (Emotion (Washington, D.C.))
[2020, 20(2):271-285]

Cited: 1 time

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Leave-One-Trial-Out, LOTO, a general approach to link single-trial parameters of cognitive models to neural data.

Sebastian Gluth, Nachshon Meiran,

A key goal of model-based cognitive neuroscience is to estimate the trial-by-trial fluctuations of cognitive model parameters in order to link these fluctuations to brain signals. However, previously developed methods are limited by being difficult to implement, time-consuming, or model-specific. Here, we propose an easy, efficient and general approach to ... Read more >>

Elife (eLife)
[2019, 8:]

Cited: 4 times

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Can we learn to learn? The influence of procedural working-memory training on rapid instructed-task-learning.

Maayan Pereg, Nitzan Shahar, Nachshon Meiran,

Humans have the unique ability to efficiently execute instructions that were never practiced beforehand. In this Rapid Instructed-Task-Learning, not-yet-executed novel rules are presumably held in procedural working-memory (WM), which is assumed to hold stimulus-to-response bindings. In this study, we employed a computerized-cognitive training protocol targeting procedural WM to test this ... Read more >>

Psychol Res (Psychological research)
[2019, 83(1):132-146]

Cited: 2 times

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Stimulus- and response-based interference contributes to the costs of switching between cognitive tasks.

Bruno Kopp, Alexander Steinke, Nachshon Meiran, Caroline Seer, Florian Lange,

Little is known about how stimulus- and response-based interference might interact to contribute to the costs of switching between cognitive tasks. We analyzed switch costs in a novel cued task-switching/card-matching paradigm in a large study (N = 95). We reasoned that interference from previously active task sets may be contingent upon the ... Read more >>

Psychol Res (Psychological research)
[2020, 84(4):1112-1125]

Cited: 3 times

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Formation of abstract task representations: Exploring dosage and mechanisms of working memory training effects.

Nitzan Shahar, Maayan Pereg, Andrei R Teodorescu, Rani Moran, Anat Karmon-Presser, Nachshon Meiran,

Working memory is strongly involved in human reasoning, abstract thinking and decision making. Past studies have shown that working memory training generalizes to untrained working memory tasks with similar structure (near-transfer effect). Here, we focused on two questions: First, we ask how much training might be required in order to ... Read more >>

Cognition (Cognition)
[2018, 181:151-159]

Cited: 4 times

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Leave-One-Trial-Out (LOTO): A general approach to link single-trial parameters of cognitive models to neural data

Sebastian Gluth, Nachshon Meiran,

It has become a key goal of model-based neuroscience to estimate trial-by-trial fluctuations of cognitive model parameters for linking these fluctuations to brain signals. However, previously developed methods were limited by being difficulty to implement, time-consuming, or model-specific. Here, we propose an easy, efficient and general approach to estimating trial-wise ... Read more >>

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Structure and Implementation of Novel Task Rules: A Cross-Sectional Developmental Study.

Frederick Verbruggen, Rossy McLaren, Maayan Pereg, Nachshon Meiran,

Rule-based performance improves remarkably throughout childhood. The present study examined how children and adolescents structured tasks and implemented rules when novel task instructions were presented in a child-friendly version of a novel instruction-learning paradigm. Each miniblock started with the presentation of new stimulus-response mappings for a go task. Before this ... Read more >>

Psychol Sci (Psychological science)
[2018, 29(7):1113-1125]

Cited: 7 times

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When less is more: costs and benefits of varied vs. fixed content and structure in short-term task switching training.

Katrina Sabah, Thomas Dolk, Nachshon Meiran, Gesine Dreisbach,

Training variability has been brought forward as one possible moderator for wider scale transfer effects in cognitive training. However, little is known about which aspects of task variability are important for optimizing training outcomes. This study systematically examined the impact of variability in the different task components on outcome measures, ... Read more >>

Psychol Res (Psychological research)
[2019, 83(7):1531-1542]

Cited: 4 times

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Are resting state spectral power measures related to executive functions in healthy young adults?

Shirley Gordon, Doron Todder, Inbal Deutsch, Dror Garbi, Nir Getter, Nachshon Meiran,

Resting-state electroencephalogram (rsEEG) has been found to be associated with psychopathology, intelligence, problem solving, academic performance and is sometimes used as a supportive physiological indicator of enhancement in cognitive training interventions (e.g. neurofeedback, working memory training). In the current study, we measured rsEEG spectral power measures (relative power, between-band ratios ... Read more >>

Neuropsychologia (Neuropsychologia)
[2018, 108:61-72]

Cited: 7 times

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The implications and applications of learning via instructions.

Baptist Liefooghe, Senne Braem, Nachshon Meiran,

Whereas psychology knows a long tradition of studies that focused on the role of practice and training in acquiring new skills or knowledge, systematic studies into learning via instructions remain relatively scarce. This is surprising given the tremendous influence instructions have on human behavior and cognition. In recent years, however, ... Read more >>

Acta Psychol (Amst) (Acta psychologica)
[2018, 184:1-3]

Cited: 2 times

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"Optimal suppression" as a solution to the paradoxical cost of multitasking: examination of suppression specificity in task switching.

Maayan Katzir, Bnaya Ori, Nachshon Meiran,

Switching between tasks necessitates maintaining tasks in high readiness, yet readiness creates paradoxical interference from these tasks when they are not currently required. "Optimal suppression", which targets just the interfering information, provides a partial solution to this paradox. By examining the carryover of suppression of a competitor stimulus-response (S-R) set ... Read more >>

Psychol Res (Psychological research)
[2018, 82(1):24-39]

Cited: 2 times

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