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Roark CL, Lescht E, Wray AH, Chandrasekaran B. Auditory and visual category learning in children and adults. Dev Psychol 2023; 59:963-975. [PMID: 36862449 PMCID: PMC10164074 DOI: 10.1037/dev0001525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Categories are fundamental to everyday life and the ability to learn new categories is relevant across the lifespan. Categories are ubiquitous across modalities, supporting complex processes such as object recognition and speech perception. Prior work has proposed that different categories may engage learning systems with unique developmental trajectories. There is a limited understanding of how perceptual and cognitive development influences learning as prior studies have examined separate participants in a single modality. The current study presents a comprehensive assessment of category learning in 8-12-year-old children (12 female; 34 white, 1 Asian, 1 more than one race; M household income $85-$100 K) and 18-61-year-old adults (13 female; 32 white, 10 Black or African American, 4 Asian, 2 more than one race, 1 other; M household income $40-55 K) in a broad sample collected online from the United States. Across multiple sessions, participants learned categories across modalities (auditory, visual) that engage different learning systems (explicit, procedural). Unsurprisingly, adults outperformed children across all tasks. However, this enhanced performance was asymmetrical across categories and modalities. Adults far outperformed children in learning visual explicit categories and auditory procedural categories, with fewer differences across development for other types of categories. Adults' general benefit over children was due to enhanced information processing, while their superior performance for visual explicit and auditory procedural categories was associated with less cautious correct responses. These results demonstrate an interaction between perceptual and cognitive development that influences learning of categories that may correspond to the development of real-world skills such as speech perception and reading. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
- Casey L. Roark
- University of Pittsburgh, Department of Communication Science and Disorders
- Center for the Neural Basis of Cognition
| | - Erica Lescht
- University of Pittsburgh, Department of Communication Science and Disorders
| | - Amanda Hampton Wray
- University of Pittsburgh, Department of Communication Science and Disorders
- Center for the Neural Basis of Cognition
| | - Bharath Chandrasekaran
- University of Pittsburgh, Department of Communication Science and Disorders
- Center for the Neural Basis of Cognition
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Iotzov V, Saulin A, Kaiser J, Han S, Hein G. Financial incentives facilitate stronger neural computation of prosocial decisions in lower empathic adult females. Soc Neurosci 2022; 17:441-461. [PMID: 36064327 DOI: 10.1080/17470919.2022.2115550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Financial incentives are commonly used to motivate behaviors. However, there is also evidence that incentives can impede the behavior they are supposed to foster, for example, documented by a decrease in blood donations if a financial incentive is offered. Based on these findings, previous studies assumed that prosocial motivation is shaped by incentives. However, so far, there is no direct evidence showing an interaction between financial incentives and a specific prosocial motive. Combining drift-diffusion modeling and fMRI, we investigated the effect of financial incentives on empathy, i.e., one of the key motives driving prosocial decisions. In the empathy-alone condition, participants made prosocial decisions based on empathy. In the empathy-bonus condition, they were offered a financial bonus for prosocial decisions, in addition to empathy induction. On average, the bonus enhanced the information accumulation in empathy-based decisions. On the neural level, this enhancement was related to the anterior insula, the same region that also correlated with empathy ratings. Moreover, the effect of the financial incentive on anterior insula activation was stronger the lower a person scored on empathy. These findings show that financial incentives enhance prosocial motivation in the absence of empathy.
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Affiliation(s)
- Vassil Iotzov
- Translational Social Neuroscience Unit, Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany.,Institute of Medical Psychology, Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Anne Saulin
- Translational Social Neuroscience Unit, Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany
| | - Jochen Kaiser
- Institute of Medical Psychology, Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Shihui Han
- School of Psychological and Cognitive Sciences, PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Grit Hein
- Translational Social Neuroscience Unit, Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany
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Rolle CE, Pedersen ML, Johnson N, Amemori KI, Ironside M, Graybiel AM, Pizzagalli DA, Etkin A. The Role of the Dorsal-Lateral Prefrontal Cortex in Reward Sensitivity During Approach-Avoidance Conflict. Cereb Cortex 2021; 32:1269-1285. [PMID: 34464445 PMCID: PMC9077265 DOI: 10.1093/cercor/bhab292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 01/09/2023] Open
Abstract
Approach-Avoidance conflict (AAC) arises from decisions with embedded positive and negative outcomes, such that approaching leads to reward and punishment and avoiding to neither. Despite its importance, the field lacks a mechanistic understanding of which regions are driving avoidance behavior during conflict. In the current task, we utilized transcranial magnetic stimulation (TMS) and drift-diffusion modeling to investigate the role of one of the most prominent regions relevant to AAC-the dorsolateral prefrontal cortex (dlPFC). The first experiment uses in-task disruption to examine the right dlPFC's (r-dlPFC) causal role in avoidance behavior. The second uses single TMS pulses to probe the excitability of the r-dlPFC, and downstream cortical activations, during avoidance behavior. Disrupting r-dlPFC during conflict decision-making reduced reward sensitivity. Further, r-dlPFC was engaged with a network of regions within the lateral and medial prefrontal, cingulate, and temporal cortices that associate with behavior during conflict. Together, these studies use TMS to demonstrate a role for the dlPFC in reward sensitivity during conflict and elucidate the r-dlPFC's network of cortical regions associated with avoidance behavior. By identifying r-dlPFC's mechanistic role in AAC behavior, contextualized within its conflict-specific downstream neural connectivity, we advance dlPFC as a potential neural target for psychiatric therapeutics.
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Affiliation(s)
- Camarin E Rolle
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA,Stanford Neurosciences Institute, Stanford University, Stanford, CA 94305, USA,Alto Neuroscience, Inc., Los Altos, CA 94022, USA
| | - Mads L Pedersen
- Department of Cognitive, Linguistic & Psychological Sciences, Brown University, Providence, RI 02912, USA,Department of Psychology, University of Oslo, NO-0316 Oslo, Norway
| | - Noriah Johnson
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA,Stanford Neurosciences Institute, Stanford University, Stanford, CA 94305, USA,Alto Neuroscience, Inc., Los Altos, CA 94022, USA
| | - Ken-ichi Amemori
- Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, 606-8501 Kyoto, Japan
| | - Maria Ironside
- Laureate Institute for Brain Research, 6655 South Yale Avenue, Tulsa, OK 74136, USA
| | - Ann M Graybiel
- McGovern Institute for Brain Research and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | | | - Amit Etkin
- Address correspondence to Amit Etkin, Alto Neuroscience, Inc., 153 Second street (suite 107), Los Altos, CA 94022, USA.
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Masharin MA, Berestennikov AS, Barettin D, Voroshilov PM, Ladutenko KS, Di Carlo A, Makarov SV. Giant Enhancement of Radiative Recombination in Perovskite Light-Emitting Diodes with Plasmonic Core-Shell Nanoparticles. Nanomaterials (Basel) 2020; 11:E45. [PMID: 33375394 DOI: 10.3390/nano11010045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 11/26/2022]
Abstract
The integration of nanoparticles (NPs) into functional materials is a powerful tool for the smart engineering of their physical properties. If properly designed and optimized, NPs possess unique optical, electrical, quantum, and other effects that will improve the efficiency of optoelectronic devices. Here, we propose a novel approach for the enhancement of perovskite light-emitting diodes (PeLEDs) based on electronic band structure deformation by core-shell NPs forming a metal-oxide-semiconductor (MOS) structure with an Au core and SiO2 shell located in the perovskite layer. The presence of the MOS interface enables favorable charge distribution in the active layer through the formation of hole transporting channels. For the PeLED design, we consider integration of the core-shell NPs in the realistic numerical model. Using our verified model, we show that, compared with the bare structure, the incorporation of NPs increases the radiative recombination rate of PeLED by several orders of magnitude. It is intended that this study will open new perspectives for further efficiency enhancement of perovskite-based optoelectronic devices with NPs.
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Neukom MT, Schiller A, Züfle S, Knapp E, Ávila J, Pérez-Del-Rey D, Dreessen C, Zanoni KPS, Sessolo M, Bolink HJ, Ruhstaller B. Consistent Device Simulation Model Describing Perovskite Solar Cells in Steady-State, Transient, and Frequency Domain. ACS Appl Mater Interfaces 2019; 11:23320-23328. [PMID: 31180209 DOI: 10.1021/acsami.9b04991] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A variety of experiments on vacuum-deposited methylammonium lead iodide perovskite solar cells are presented, including JV curves with different scan rates, light intensity-dependent open-circuit voltage, impedance spectra, intensity-modulated photocurrent spectra, transient photocurrents, and transient voltage step responses. All these experimental data sets are successfully reproduced by a charge drift-diffusion simulation model incorporating mobile ions and charge traps using a single set of parameters. While previous modeling studies focused on a single experimental technique, we combine steady-state, transient, and frequency-domain simulations and measurements. Our study is an important step toward quantitative simulation of perovskite solar cells, leading to a deeper understanding of the physical effects in these materials. The analysis of the transient current upon voltage turn-on in the dark reveals that the charge injection properties of the interfaces are triggered by the accumulation of mobile ionic defects. We show that the current rise of voltage step experiments allow for conclusions about the recombination at the interface. Whether one or two mobile ionic species are used in the model has only a minor influence on the observed effects. A delayed current rise observed upon reversing the bias from +3 to -3 V in the dark cannot be reproduced yet by our drift-diffusion model. We speculate that a reversible chemical reaction of mobile ions with the contact material may be the cause of this effect, thus requiring a future model extension. A parameter variation is performed in order to understand the performance-limiting factors of the device under investigation.
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Affiliation(s)
- Martin T Neukom
- Institute of Computational Physics , Zurich University of Applied Sciences , Wildbachstr. 21 , 8401 Winterthur , Switzerland
- Fluxim AG , Loft 313, Katharina-Sulzer-Platz 2 , 8400 Winterthur , Switzerland
- Institute of Physics , University of Augsburg , 86135 Augsburg , Germany
| | - Andreas Schiller
- Institute of Computational Physics , Zurich University of Applied Sciences , Wildbachstr. 21 , 8401 Winterthur , Switzerland
- Fluxim AG , Loft 313, Katharina-Sulzer-Platz 2 , 8400 Winterthur , Switzerland
| | - Simon Züfle
- Institute of Computational Physics , Zurich University of Applied Sciences , Wildbachstr. 21 , 8401 Winterthur , Switzerland
- Fluxim AG , Loft 313, Katharina-Sulzer-Platz 2 , 8400 Winterthur , Switzerland
| | - Evelyne Knapp
- Institute of Computational Physics , Zurich University of Applied Sciences , Wildbachstr. 21 , 8401 Winterthur , Switzerland
| | - Jorge Ávila
- Instituto de Ciencia Molecular , Universidad de Valencia , C/J. Beltrán 2 , 46980 Paterna , Spain
| | - Daniel Pérez-Del-Rey
- Instituto de Ciencia Molecular , Universidad de Valencia , C/J. Beltrán 2 , 46980 Paterna , Spain
| | - Chris Dreessen
- Instituto de Ciencia Molecular , Universidad de Valencia , C/J. Beltrán 2 , 46980 Paterna , Spain
| | - Kassio P S Zanoni
- Instituto de Ciencia Molecular , Universidad de Valencia , C/J. Beltrán 2 , 46980 Paterna , Spain
| | - Michele Sessolo
- Instituto de Ciencia Molecular , Universidad de Valencia , C/J. Beltrán 2 , 46980 Paterna , Spain
| | - Henk J Bolink
- Instituto de Ciencia Molecular , Universidad de Valencia , C/J. Beltrán 2 , 46980 Paterna , Spain
| | - Beat Ruhstaller
- Institute of Computational Physics , Zurich University of Applied Sciences , Wildbachstr. 21 , 8401 Winterthur , Switzerland
- Fluxim AG , Loft 313, Katharina-Sulzer-Platz 2 , 8400 Winterthur , Switzerland
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