scholarly journals Inter-and intra-individual coupling between pupillary, electrophysiological, and behavioral responses in a visual oddball task

2020 ◽  
Author(s):  
Sara LoTemplio ◽  
Jack Silcox ◽  
Brennan Payne ◽  
Kara D. Federmeier

Although the P3b component of the event-related brain potential is one of the most widely-studied components, its underlying generators are not currently well understood. Recent theories have suggested that the P3b is triggered by phasic activation of the locus-coeruleus norepinephrine (LC-NE) system, an important control center implicated in facilitating optimal task-relevant behavior. Previous research has reported strong correlations between pupil dilation and LC activity, suggesting that pupil diameter is a useful indicator for ongoing LC-NE activity. Given the strong relationship between LC activity and pupil dilation, if the P3b is driven by phasic LC activity, there should be a robust trial-to-trial relationship with the phasic pupillary dilation response (PDR). However, previous work examining relationships between concurrently recorded pupillary and P3b responses has not supported this. One possibility is that the relationship between the measures might be carried primarily by either inter-individual (i.e., between-participant) or intra-individual (i.e., within-participant) contributions to coupling, and prior work has not systematically delineated these relationships. Doing so in the current study, we do not find evidence for either inter-individual or intra-individual relationships between the PDR and P3b responses. However, baseline pupil dilation did predict the P3b. Interestingly, both the PDR and P3b independently predicted inter-individual and intra-individual variability in decision response time. Implications for the LC-P3b hypothesis are discussed.

2020 ◽  
Author(s):  
endang naryono

This study examines the influence of receivables on liquidity at PT. Graha Tumarima. Sukabumi City for 5 years, with a sampling technique using a purposive sample in the form of financial statement data from 2010 to 2014 using a table of trade receivables and company liquidity. In this study, researchers refer to the theory of Bambang Riyanto (2008: 94) as the connecting theory of the title. This study aims to determine whether there is a relationship and influence between receivables and liquidity at PT. Graha Tumarima. The research design uses the method of exposing the facto, the method of data collection aims to test the hypothesis by using correlation analysis, determination, regression and hypothesis testing with t-test. The results of this study show the influence of receivables on liquidity is shown by the value of r = 0.888, meaning that receivables have a very strong relationship to liquidity. The nature of the relationship is positive, meaning that if the value of cooperative credit is higher the liquidity will be higher. Conversely, if the value of receivables decreases, liquidity will decrease. The magnitude of the influence of receivables on liquidity is shown by the value of R Square / Determination Coefficient of 0.789 or 78.9% thus the receivables have an effect of 78.9% on cooperative liquidity. Hypothesis testing uses the t test, that t arithmetic = 3.347 while t table = 3.182 means t arithmetic> t table. Means that Ho is rejected and Ha is accepted. There is an influence between the receivables on liquidity at PT. Graha Tumarima, Sukabumi City


2019 ◽  
Author(s):  
Chem Int

Mathematical model was developed and evaluated to monitor and predict the groundwater characteristics of Trans-amadi region in Port Harcourt City. In this research three major components were considered such as chloride, total iron and nitrate concentration as well as the polynomial expression on the behavious on the concentration of each component was determined in terms of the equation of the best fit as well as the square root of the curve. The relationship between nitrate and distance traveled by Nitrate concentration by the model is given as Pc = 0.003x2 - 0.451x + 14.91with coefficient of determination, R² = 0.947, Chloride given as Pc = 0.000x2 - 0.071x + 2.343, R² = 0.951while that of Total Iron is given as Pc = 2E-05x2 - 0.003x + 0.110, R² = 0.930. All these show a strong relationship as established by Polynomial Regression Model. The finite element techniques are found useful in monitoring, predicting and simulating groundwater characteristics of Trans-amadi as well as the prediction on the variation on the parameters of groundwater with variation in time.


2017 ◽  
Author(s):  
Miranda Lynn Groft ◽  
Nathan Pistory ◽  
Rachel Hardy ◽  
Peter Joseph McLaughlin

With the proliferation of neuroscience-related messages in popular media, it is more important than ever to understand their impact on the lay public. Previous research has found that people believed news stories more when irrelevant neuroscientific explanations were added. We sought to reveal whether such information could cause a change in social behavior. Specifically, based on publicized findings of the relationship between social behavior and the neurotransmitter oxytocin, we proposed that participants would accept more strangers into their in-group, or alternatively decrease in-group size, if told that there were oxytocin-based (relative to psychological construct-based) health benefits for doing so. In two tasks, participants were shown faces and written information about stimuli that could match their race, politics, and religion to varying degrees. In spite of evidence that participants processed the primes, and were sensitive to their level of similarity with stimuli, oxytocin-based priming did not alter categorization, or pupil dilation. It did not alter cross-race viewing behavior, as measured by an eye tracker, in consistent ways. Unexpectedly, pupil dilation increased when viewing stimuli of the same religion, an effect entirely related to White liberal Christians viewing other Christians. Overall, these results suggest that neuroscience information may impact some judgments, but lay people will not alter their likelihood of acceptance of strangers simply because they were primed with a neuroscience- (or more specifically, neurotransmitter-) based reason for doing so.


Economies ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 25 ◽  
Author(s):  
Yang Songling ◽  
Muhammad Ishtiaq ◽  
Bui Thi Thanh

In the developing economy, tourism is the most visible and steadiest growing facade. Tourism is considered one of the rapidly increasing elements for economic development from the last two decades. Therefore, the proposed study used vector autoregression (VAR) model, error correction model (ECM), and the Granger causality to check the relationship between the tourism industry and economic growth based on the data of the Beijing municipal bureau of statistics from 1994 to 2015. Gross domestic product (GDP) is used as a replacement variable for the economic growth index, while internal tourism revenue is used as a tourism industry indicator. The study supports the tourism-led growth hypothesis proposed in the existing literature in a different survey of tourism and economic development. The results show that there is a strong relationship in the tourism industry and economic growth in the context of Beijing, and at the same time, tourism creates a more significant increase in long run local real economic accomplishments. The results of the VAR model confirm that in the long run, Beijing’s economic growth is affected by domestic tourism, while the ECM model shows unidirectional results in the short term. Similarly, there is a one-way causal relationship between the tourism industry and economic growth in Beijing, China. The empirical results are in strong support of the concept that tourism causes growth.


1976 ◽  
Vol 6 (3) ◽  
pp. 364-368
Author(s):  
Paul R. Abramson

The strong relationship between social class and partisan choice is one of the most extensively documented facts of British political life; but that relationship declined markedly during the 1960s, as Butler and Stokes have shown. Their lucid documentation of the declining class–party nexus is among the major findings of the second edition of their book, and, as class-based partisanship is particularly low among the young, many might conclude that the relationship between class and party will continue to decline in future. It would, however, be premature to reach this conclusion.


2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
A-Yong Yu ◽  
Hua Guo ◽  
Qin-Mei Wang ◽  
Fang-Jun Bao ◽  
Jing-Hai Huang

Objective. To investigate mydriatic effect of intracamerally injected epinephrine hydrochloride during phacoemulsification and intraocular lens (IOL) implantation.Methods. Eighteen cataract patients for bilateral phacoemulsification were enrolled. To dilate pupil, one eye was randomly selected to receive intracamerally 1 mL epinephrine hydrochloride 0.001% for 1 minute after corneal incision (intracameral group), and the contralateral eye received 3 drops of compound tropicamide 0.5% and phenylephrine 0.5% at 5-minute intervals 30 minutes before surgery (topical group). Pupil diameters were measured before corneal incision, before ophthalmic viscoelastic device (OVD) injection, after OVD injection, before IOL implantation, and at the end of surgery.Results. At each time point, the mean pupil diameter in the intracameral group was2.20±0.08,5.09±0.20,6.76±0.19,6.48±0.18, and5.97±0.24 mm, respectively, and in the topical group it was7.98±0.15,7.98±0.15,8.53±0.14,8.27±0.16, and7.93±0.20 mm, respectively. The topical group consistently had larger mydriatic effects than the intracameral group (P<0.05). The onset of mydriatic effect was rapid in the intracameral group. There was no difference in surgical performance or other parameters between groups.Conclusions. Intracameral epinephrine hydrochloride appears to be an alternative to the mydriatic modalities for phacoemulsification and IOL implantation. In comparison with topical mydriatics, intracameral epinephrine hydrochloride offers easier preoperative preparation, more rapid pupil dilation, and comparable surgical performance.


2001 ◽  
Vol 13 (3) ◽  
pp. 271-279 ◽  
Author(s):  
Brent J. Sinclair ◽  
Heidi Sjursen

Cold tolerance of the springtail Gomphiocephalus hodgsoni Carpenter (Collembola: Hypogastruridae) was studied at Cape Bird, Ross Island, Antarctica (77°13′S, 166°26′E). Microclimate temperatures indicate a highly seasonal thermal environment, with winter minima <–39°C. Snow cover significantly buffers both minimum temperatures and cooling rates. Gomphiocephalus hodgsoni survives low temperatures by avoiding freezing. Mean low group supercooling points (SCPs) ranged from –35.4°C in October to –28.3°C in January. The lowest SCP measured was –38.0°C. The high SCP group was very small, making up only 18% of the population in January. In October, G. hodgsoni had a very high glycerol content (>80 μg mg−1 dry weight), although this declined rapidly to low levels (c. 7–10 μg mg−1 dry weight) in January. Quantities of glucose and trehalose were low during October, but steadily increased throughout the summer. Haemolymph osmolality was exceptionally high (up to 1755 mOsm kg−1) at the end of November, but this rapidly declined to c. 500 mOsm kg−1 by late December. The presence of thermal hystersis proteins was indicated by both osmometry on haemolymph samples and recrystallization inhibition studies of springtail homogenates. There was a strong relationship between glycerol content and SCP, but the relationship between haemolymph osmolality, SCP and carbohydrates is uncertain.


2016 ◽  
Vol 31 (3) ◽  
pp. 642-656 ◽  
Author(s):  
Violet T. Ho ◽  
Amanuel G. Tekleab

Purpose – The purpose of this paper is to disentangle the relationship between the request of idiosyncratic deals (i-deals) and the receipt of such deals, and investigate the moderating roles of human capital (gender and industry experience) and social capital (leader-member exchange (LMX)) in this relationship. Attitudinal outcomes of i-deals receipt are also examined. Design/methodology/approach – Data were collected from 244 alumni of a Midwestern public university. Findings – The positive relationship between i-deals request and receipt was stronger at higher than at lower levels of LMX. Receiving i-deals was related positively to job satisfaction and affective commitment, and negatively to turnover intention. Research limitations/implications – The authors provide a nuanced perspective of i-deals by separating employees’ request from their receipt of i-deals, and identifying contingent factors that determine whether i-deal requests are successful. Practical implications – For employees, cultivating a strong relationship with one’s supervisor can yield benefits that extend to i-deals negotiation. Providing i-deals to deserving workers can boost employees’ work attitudes. Originality/value – Previous studies have operationalized the i-deals construct as requesting and receiving the deal, thereby excluding the possibility that employees may have requested but did not receive the i-deal. This is one of the first studies to disentangle these two concepts, thereby providing a more balanced and representative view of i-deal-making in organizations.


2021 ◽  
Vol 1 (1) ◽  
pp. 24-28
Author(s):  
Nadya Savira Chaerani ◽  
Dedeh Fardiah

Abstract. In February 2019 KPID West Java issued a circular containing restrictions on the hours of broadcast of some English-language songs that were vulgar in content, both in the form of songs or video clips. There are 17 English songs contained in circular attachments issued by KPID West of Java. Dozens of songs can only be aired starting at 22:00 WIB until 03.00 WIB. The broadcast limitation starts from public complaints and KPID supervision of the broadcast content. A number of online media rollicking to preach this event, one of which is online media Detik.com which is a news site that is widely accessed by various groups. This study uses a quantitative method with a correlational approach that aims to find out the relationship of truth, relevance, balance and neutrality between the coverage of 17 western songs by KPID West of Java towards the interests of listeners of western songs on Radio as aspects of cognitive, evaluative and the interests of listeners of western songs on the radio The students of Faculty of Communication Sciences Unisba as the dependent variable, this study uses the objectivity theory of Westerstahl. From this study using the stratified random sampling technique, it was concluded that there was a significant and very strong relationship between Factuality, Impartiality and Western Song Listeners' Interests on Radio at the Faculty of Communication Sciences Unisba. Abstrak. Pada bulan Februari 2019 KPID Jawa Barat mengeluarkan surat edaran yang berisi tentang pembatasan jam penyiaran beberapa lagu berbahasa Inggris yang berkonten vulgar, baik dalam bentuk lagu atau pun video klip. Terdapat 17 lagu berbahasa Inggris yang terdapat dalam lampiran surat edaran yang dikeluarkan KPID Jawa Barat. Belasan lagu itu hanya boleh tayang mulai pukul 22.00 WIB hingga 03.00 WIB. Pembatasan penyiaran berawal dari aduan masyarakat dan pengawasan KPID terhadap isi siaran. Sejumlah media online beramai-ramai memberitakan peristiwa ini salah satunya media online Detik.com yang merupakan situs berita yang banyak diakses oleh berbagai kalangan. Penelitian ini menggunakan metode kuantitatif dengan pendekatan korelasional yang bertujuan mengetahui adanya hubungan kebenaran, relevansi, keberimbangan dan netralitas antara pemberitaan pembatasan 17 lagu barat oleh KPID Jawa Barat terhadap minat pendengar lagu barat di Radio sebagai aspek dalam kognitif, evaluatif dengan minat pendengar lagu barat di radio pada Mahasiswa Fikom Unisba sebagai variabel terikat, penelitian ini menggunakan teori Objektivitas dari Westerstahl. Dari penelitian ini yang menggunakan teknik penarikan sampel stratified random sampling ini ditemukan kesimpulan, bahwa terdapat hubungan yang signifikan dan sangat kuat antara Faktualitas, Imparsialitas dengan Minat Pendengar Lagu Barat di Radio pada Mahasiswa Fikom Unisba.


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