scholarly journals Opposing history effect of preceding decision and action in the free choice of saccade direction

2014 ◽  
Vol 112 (4) ◽  
pp. 923-932 ◽  
Author(s):  
Kei Mochizuki ◽  
Shintaro Funahashi

When we act voluntarily, we make a decision to do so prior to the actual execution. However, because of the strong tie between decision and action, it has been difficult to dissociate these two processes in an animal's free behavior. In the present study, we tried to characterize the differences in these processes on the basis of their unique history effect. Using simple eye movement tasks in which the direction of a saccade was either instructed by a computer or freely chosen by the subject, we found that the preceding decision and action had different effects on the animal's subsequent behavior. While choosing a direction (previous decision) produced a positive history effect that prompted the choice of the same saccade direction, making a saccadic response to a direction (previous action) produced a negative history effect that discouraged the monkey from choosing the same direction. This result suggests that the history effect in sequential behavior reported in previous studies was a mixture of these two different components. Future studies on decision-making need to consider the importance of the distinction between decision and action in animal behavior.

2021 ◽  
Vol 26 (2) ◽  
pp. 89
Author(s):  
Renata Sabrinne Souza de Carvalho ◽  
Mahayana Cristina Godoy

Resumo: Nesse trabalho, construímos um corpus com predicados de causalidade implícita para o Português Brasileiro (PB). A causalidade implícita é uma propriedade de uma classe de predicados verbais cuja causa para o evento que denotam tende a recair, para alguns verbos, no sujeito da oração (“enfurecer”, “decepcionar”) e, para outros, em seu objeto (“parabenizar”, “admirar”). Nosso objetivo foi registrar o viés de causalidade de 50 predicados. Para isso, realizamos um experimento de continuação de sentenças com 34 participantes, falantes nativos de português brasileiro. Nossas análises identificaram 24 verbos com viés de causalidade associado ao sujeito e 22 verbos com viés de causalidade associada ao objeto. Esses resultados expandem um corpus já existente em português europeu (COSTA, 2003). Que saibamos, este é o primeiro estudo normativo para a construção de um corpus de causalidade implícita que tem como alvo falantes de português brasileiro. O resultado é um conjunto de verbos que podem ser usados em futuros estudos em psicolinguística ou psicologia que lidem com relações de causalidade. Palavras-chave: psicolinguística; causalidade implícita; verbos; português brasileiro.Abstract: In this paper, we built an implicit causality corpus for Brazilian Portuguese (BP) verbal predicates. Implicit causality is a property of some verbal predicates that strongly associate their causality with their subject (for verbs such as “enrage”, “disappoint”) or their object (for verbs like “congratulate”, “admire”). Our goal was to measure the causality bias of 50 predicates. In order to do so, we carried out a sentence continuation experiment with 34 participants, all native speakers of Brazilian Portuguese. Our results identify 24 verbs with a causal bias associated with the subject of the clause, and 22 verbs with a causal bias associated with its object. These results expand a corpus that already exists in European Portuguese (Costa, 2003). To the best of our knowledge, this is the first normative study for the construction of a corpus of implicit causality that targets Brazilian Portuguese speakers. The result is a set of verbal predicates that can be used in future studies in psycholinguistics or psychology that aims at investigating causal relationships.Keywords: psycholinguistics; implicity causality; verbs; Brazilian portuguese.


2016 ◽  
Vol 11 (1) ◽  
pp. 10-35
Author(s):  
Joseph Azize

The various published biographies and biographical notices of G.I. Gurdjieff (c.1865-1949) are of diverse style, quantity and content. While some have made considerable contributions to the subject, most attempts have reacted for or against Gurdjieff’s status as what might call an ‘Enlightened Master’. Little biographical writing on Gurdjieff has questioned the scope, reliability and prejudices of the sources. Further, possible resources have been neglected. The development in Gurdjieff’s ideas is often overlooked, his life is not sufficiently related to that development, and the lack of comparative research has failed to highlight Gurdjieff’s unique contributions. This article is structured in four parts. The first is an introduction, followed by an overview of existing biographical studies of Gurdjieff. The third part addresses bias in these studies, and this is followed by suggestions for future studies. It is concluded that fieldwork regarding the biography of Gurdjieff has been hampered by imperfect methodology. However, with better use of the source material, some of which has only recently been discovered, and a rigorous use of sources, a more balanced and nuanced picture of Gurdjieff’s life, and the development of his ideas and methods, should emerge.


1997 ◽  
Vol 36 (4I) ◽  
pp. 321-331
Author(s):  
Sarfraz Khan Qureshi

It is an honour for me as President of the Pakistan Society of Development Economists to welcome you to the 13th Annual General Meeting and Conference of the Society. I consider it a great privilege to do so as this Meeting coincides with the Golden Jubilee celebrations of the state of Pakistan, a state which emerged on the map of the postwar world as a result of the Muslim freedom movement in the Indian Subcontinent. Fifty years to the date, we have been jubilant about it, and both as citizens of Pakistan and professionals in the social sciences we have also been thoughtful about it. We are trying to see what development has meant in Pakistan in the past half century. As there are so many dimensions that the subject has now come to have since its rather simplistic beginnings, we thought the Golden Jubilee of Pakistan to be an appropriate occasion for such stock-taking.


Acta Juridica ◽  
2021 ◽  
Vol 2021 ◽  
pp. 141-176
Author(s):  
F Brand

The role of abstract values such as equity and fairness in our law of contract has been the subject of controversy for a number of years. In 2002 the Supreme Court of Appeal took the position that these values do not constitute self-standing grounds for interfering with contractual relationships. Despite this being consistently maintained by the SCA in a number of cases, some High Court judges deviated from this position on the basis that they were permitted to do so by some minority judgments and obiter dicta in the Constitutional Court. The uncertainty thus created has fortunately now been removed by the judgment of the Constitutional Court in Beadica v The Trustees for the Time being of the Oregon Trust.


1877 ◽  
Vol 4 (2) ◽  
pp. 72-75 ◽  
Author(s):  
J. R. Dakyns

In the summer of 1872 I visited Norway, and wrote the following brief notice of certain high-level terraces immediately on my return to England, but kept it back that I might first consult some papers on Norwegian terraces that had appeared in the closing numbers of “Scientific Opinion”; these I was not able to meet with for so long a time that I gave up the idea of sending my notice to the press. I am now induced to do so, because I see that the subject of the parallel roads of Glenroy still occupies the attention of geologists, and it may induce some one next summer to examine minutely the Dovre terraces and sand-heaps and their relation to the physical geography of the district. I was merely able to make a flying visit to them, which I delayed my party to do, because they caught my eye so forcibly, as we were driving along the valley.


1902 ◽  
Vol 48 (202) ◽  
pp. 434-450 ◽  
Author(s):  
T. S. Clouston

Dr. Clouston said that when he suggested toxæmia to the secretary as a suitable subject for a discussion at this meeting he had not intended to be the first speaker, because his object was to bring out more fully the views of the younger members who had recently committed themselves so strongly to the toxæmic and bacterial etiology of insanity, and so to get light thrown on some of the difficulties which he and others had felt in applying this theory to many of their cases in practice. It was not that he did not believe in the toxic theory as explaining the onset of many cases, or that he under-rated its importance, but that he could not see how it applied so universally or generally as some of the modern pathological school were now inclined to insist on. He knew that it was difficult for those of the older psychological and clinical school to approach the subject with that full knowledge of recent bacteriological and pathological doctrine which the younger men possessed, or to breathe that all-pervading pathological atmosphere which they seemed to inhale. He desired to conduct this discussion in an absolutely non-controversial and purely scientific spirit. To do so he thought it best to put his facts, objections, and difficulties in a series of propositions which could be answered and explained by the other side. He thought it important to define toxæmia, but should be willing to accept Dr. Ford Robertson's definition of toxines, viz., “Substances which are taken up by the (cortical nerve) cell and then disorder its metabolism.” He took the following extracts from his address at the Cheltenham meeting of the British Association (1) as representing Dr. Ford Robertson's views and the general trend of much investigation and hypothesis on the Continent.


Cells ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 357 ◽  
Author(s):  
Giorgia Schena ◽  
Michael J. Caplan

The beta-3 adrenergic receptor (β3-AR) is by far the least studied isotype of the beta-adrenergic sub-family. Despite its study being long hampered by the lack of suitable animal and cellular models and inter-species differences, a substantial body of literature on the subject has built up in the last three decades and the physiology of β3-AR is unraveling quickly. As will become evident in this work, β3-AR is emerging as an appealing target for novel pharmacological approaches in several clinical areas involving metabolic, cardiovascular, urinary, and ocular disease. In this review, we will discuss the most recent advances regarding β3-AR signaling and function and summarize how these findings translate, or may do so, into current clinical practice highlighting β3-AR’s great potential as a novel therapeutic target in a wide range of human conditions.


1976 ◽  
Vol 10 (3) ◽  
pp. 279-312 ◽  
Author(s):  
R. A. Burchell

Studies of the Massachusetts communities of Newburyport and Boston have revealed a high rate of geographical mobility for their populations, in excess of what had been previously thought. Because of the difficulty in tracing out-migrants these works have concentrated on persisters, though to do so is to give an incomplete picture of communal progress. Peter R. Knights in his study of Boston between 1830 and 1860 attempted to follow his out-migrants but was only able to trace some 27 per cent of them. The problem of out-migration is generally regarded as being too large for solution through human effort, but important enough now to engage the computer. What follows bears on the subject of out-migration, for it is an analysis of where part of the migrating populations of the east went in the third quarter of the nineteenth century, namely to San Francisco.


2008 ◽  
Vol 67 (1) ◽  
pp. 69-91 ◽  
Author(s):  
Arthur Chaskalson

There are two themes that recur in previous Sir David Williams lectures. First, that it is a considerable honour to be invited to give the lecture. Secondly, that it is a daunting task to do so in the presence of Sir David, particularly in a field in which he has expertise. Since that covers most of the law there is no escape from this dilemma. Let me then acknowledge the privilege of having been asked to give this year's lecture, and confess that it is with some trepidation that I do so. The subject, terrorism and human rights, is not exactly uncharted territory. When I looked into the internet for some guidance on what might be relevant to terrorism and human rights, the response to my Google search informed me that in .03 seconds 32,900,000 references had been found. This seemed to indicate that it was unlikely that I would be able to say anything that has not already been said. But there are some subjects that are of such importance that there is value in reminding ourselves of the issues that are at stake, and if necessary for that purpose, repeating what others have said. And it is with that in mind that I approach my chosen topic.


1972 ◽  
Vol 6 (1) ◽  
pp. 1-17
Author(s):  
J. R. Jacob

In November 1842, La Roy Sunderland, Orange Scott and Jotham Horton, leading abolitionists and ministers, withdrew from the Methodist Episcopal Church. The first issue of the True Wesleyan, Scott's anti-slavery newspaper, published an announcement of their withdrawal and their reasons for deciding to do so. They could no longer serve a church that condoned slavery and that scarcely permitted delegates to its conferences to raise the issue there. The three dissenters saw what they regarded as the high-handed tactics of the bishops in preventing conferences from considering anti-slavery resolutions as resting upon ‘the assumptions of Rome’! This act of withdrawal and the formation of the wesleyan Methodist Church die following May came after a six years' struggle between the radical abolitionists within the Church and their more conservative brethren, principally the bishops, who had stifled discussion of the slavery issue in order to preserve the Church as a national entity. This Wesleyan schism is a token of the change that is the subject of this essay.


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