著者

古本 英晴

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.7, no.3, pp.210-222, 2000-09-01 (Released:2008-10-03)

参考文献数

49

被引用文献数

1

---

Although many cases have been reported on impairment of tool use and behavioral disturbance due to brain damage, the precise brain mechanisms regulating human behavior are still unknown.In this report, an outline of behavioral abnormalities caused by brain damage, including utilization behavior (UB), imitation behavior (IB), and apraxia are presented. Next, a case of UB and IB elicited only by a key person is reported, and interpretation of his symptoms is discussed. Lastly, the general structure of information processing in the human brain for tool use and behavior are discussed. I speculate that there are two distinct systems in the human brain, that is, a control system and a substantial information processing system. The former corresponds to attention and emotion. This distinction should have importance when considering tool use and behavior in human beings.A right-handed, 70 year-old man suffered bilateral anterior cerebral artery occlusion that resulted in bilateral frontal lobe infarction. He was inert, and his attention was impaired. He showed typical UB and IB which were elicited only by his chief physician and only in examination situations. Both UB and IB were lacking in his daily life and were never elicited by his family members or other medical personnel. Another report also gives evidence of cases in which a key person is required for UB and/or IB to be elicited.Generally, an object could be considered to always show its meaning as a tool, which implies that its affordace emerges from the object itself. The behavior presented by the key person also can be regarded as a releaser for the patient to imitate behavior. Thus his essential impairment can be attributed to failure to grasp the correct relation of the meaning of objects or of behaviors and situations. This should be called a type of semantic impairments.On the other hand, the patient's inertia and impaired attention is indicative of emotional disturbance. In fact, his cerebral lesions involve some parts of the limbic system. This suggests that he lost active perception which resulted in his being very easily captured by external stimuli. His unique symptoms should not be attributed to the traditional explanation in which UB and/or IB emerge from simple disinhibition of the parietal lobe function from the frontal lobe function.

著者

高野 陽太郎

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.18, no.2, pp.229-230, 2011 (Released:2011-12-16)

著者

岩田 誠

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.1, no.1, pp.1_19-1_30, 1994-05-20 (Released:2008-10-03)

参考文献数

34

---

The brain of homo sapiens acquired the ability of reading and writing after the long-standing phylogenetical development. The invention of letters more than 5,000 years ago by our ancestors has realized the communication beyond the limit of time and space, and accordingly all the living creatures finally entered into the histological age of evolution. Thus, the cerebral mechanism of reading and writing might be one of the ultimate goals of the evolution of brain.Scientific approach to the study of cerebral mechanism of reading and writing was initiated by the clinical observations of the patients who had become unable to read and write due to focal brain damage. Through these classical studies, the angular gyrus theory was proposed in the western world to explain the brain function underlying the ability of reading and writing. Although the angular gyrus theory was successful in explaining the anatomo-clinical features of alexia (disability in reading) and agraphia (disability in writing) in westerners, there had been found cases of alexia and/or agraphia in Japan whose clinical pictures could never been explained by this simple classical theory.The enigma was solved when a patient with alexia and agraphia only in kanji with preservation of reading and writing in kana was found to have a focal damage in the left posterior inferior temporal lobe, which was thought to be involved in the process of semantic reading as well as visual evocation of letter form in writing. Upon the clinical observations we proposed the dual processing model of cerebral mechanism in reading and writing. Our recent investigations of PET scan activation studies are now confirming the validity of this dual processing model.

著者

川合 伸幸

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.14, no.3, pp.455-461, 2007-09

著者

横澤 一彦

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.1, no.2, pp.2_64-2_82, 1994 (Released:2008-10-03)

参考文献数

33

---

Visual search tasks to discover target in distractors are used for performance test of early vision. Fast and spatially parallel detection is taken as evidence that features in question are coded early in the visual process. Targets that are defined by conjunctions of features are usually found through a serial process of checking and rejecting distractors. The search time increases linearly with the number of distractors, suggesting that attention must be focused to each item in turn in order to conjoin features. Based on these recent studies of visual search, a model of visual attention is proposed. It is assumed that a visual image is encoded in a multi-resolution pyramid and attention function selects a sampling area from the pyramid. The function, guided by top-down and bottom-up mechanisms, give priority to sampling. New sampling is reconstructed by combining with previous samplings so that the reconstruction is as visually recognizable as possible at any moment. A computer simulation of the model produces the same general characteristics as human.

著者

内海 彰

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.8, no.4, pp.352-359, 2001-12-01 (Released:2008-10-03)

参考文献数

40

被引用文献数

1

---

This paper presents cognitive/computational models of rhetoric I have proposed: an affective-similarity-based model of metaphor comprehension and an implicit-display-theoretic model of irony interpretation. This paper also mentions poetic/aesthetic effects of metaphor and irony evoked through the interpretation process.

著者

山梨 正明

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.14, no.4, pp.571-573, 2007 (Released:2009-04-24)

著者

内海 彰 金井 明人

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.14, no.3, pp.233-235, 2007 (Released:2009-04-24)

被引用文献数

1

著者

永井 由佳里

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.16, no.1, pp.185-191, 2009 (Released:2010-06-11)

参考文献数

8

著者

石井 成郎 三輪 和久

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.10, no.4, pp.469-485, 2003-12-01 (Released:2008-10-03)

参考文献数

19

被引用文献数

6

---

We investigated, through a cognitive psychological experiment and its protocol analysis, experts' and novices' interactive process between the mental operation by which participants considered their ideas and the external operations by which they actually produced physical objects in creative activity. In our experiment, the participants were required to build toy robots with creative features with LEGO Mindstorms. The experimental results showed that the experts could create work that fulfilled both high originality and practicality simultaneously. Moreover, the following four points were confirmed as characteristics of the experts' creative process: (1) the experts globally considered their initial ideas, (2) the experts predicted and considered their ideas by focusing on various aspects of important viewpoints, (3) the experts reconstructed their ideas more actively, and (4) the experts reconstructed their ideas by considering comprehensively the relationship among the elements constructing their plans.

著者

長岡 千賀 小森 政嗣

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.16, no.1, pp.24-38, 2009 (Released:2010-06-11)

参考文献数

31

被引用文献数

3

---

The present research brings insight into listener's responses in psychotherapeutic counseling and advice sessions, as well as temporal changes in these responses. Four 50-minute counseling sessions were analyzed, of which two were negatively evaluated and two were positively evaluated (high evaluation counseling). In addition, two 50-minute ordinary advice sessions between two high school teachers and the clients from the high evaluation group were analyzed. All sessions represented role-playing. Three judges labeled the listeners' utterances into (a) utterances starting with an answer to the speaker's questions, (b) utterances starting with back-channels, (c) utterances starting with laughter, and (d) others. The results indicated that (a) and (c) are rather rare in counseling, and (b) occurs at a higher rate in counseling, as compared to advise sessions. Further, the occurrence of (b) and (d) in the two high evaluation counseling cases showed a similar time-series pattern, and this pattern corresponded to the time-series pattern of body movement synchrony. This pattern suggested a temporal structure in counseling sessions, that involves processes of counselor's understanding of the client and the client's changes.

著者

秋元 頼孝 邑本 俊亮

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.14, no.3, pp.292-302, 2007 (Released:2009-04-24)

参考文献数

14

被引用文献数

1

---

The present study aims to verify whether the perception of irony occurs after pragmatic insincerity is detected from the speaker's perspective or from the listener's egocentric perspective. Under the manipulation of shared common ground (CG) between the listener who had ironic environment and the speaker, effects of cognitive load on irony comprehension were explored. In Experiment 1, participants read passage and rated the degree of perceived irony with⁄without cognitive load. In Experiment 2, participants also had to judge whether the utterance was irony or not as quickly as possible. On low-CG condition, cognitive load increased the degree of perceived irony (Experiment 1) and decreased the reaction time of irony judgment (Experiment 2). These results showed that participants didn't inhibit the unintended ironical meaning because they were unable to consider common ground under cognitive load. On high-CG condition, cognitive load affected neither the degree of perceived irony nor the reaction time of irony judgment. It was suggested that listeners initiate the processing of ironical meaning when they notice the pragmatic insincerity from their egocentric perspective, not when they recognize it from the speaker's perspective.

著者

南 哲人 乾 敏郎

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.9, no.1, pp.149-157, 2002-03-01 (Released:2008-10-03)

参考文献数

11

被引用文献数

1

---

The major function of prefrontal cortex (PFC) is known as working memory, which retains relevant information on-line. Rao et al. (1997) found neurons contributing to both object and spatial working memory. However, its mechanism is still unknown. In this study, we propose a neural network model of working memory in order to shed light on the mechanism. Our model has two input streams and can cope with the task in which two kinds of information have to be retained at the same time. We simulated some physiological results with this model. As a result, we could simulate temporal activity patterns of the neuron responding to both object and location information as shown in Rao et al. (1997). And we considered domain-specificity by constructing three architectures of neural networks and the physiological results could be simulated best by no-domain specificity model. This result suggests that there should be no domain-specificity in PF working memory.

著者

阿部 慶賀

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.16, no.2, pp.231-240, 2009 (Released:2010-06-21)

参考文献数

18

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Previous studies (Frank, 1988; Toda, 1992) have shown the sense of unfairness to be an adaptive module within social environments. While adaptive modules can function effectively in practical contexts, they can be obstacles to solving insight problems (Knoblich, 1999; Hiraki & Suzuki, 1998; Abe & Nakagawa, 2007).   The purpose of this study is to test the effects of the sense of unfairness on problem solving. We hypothesize that the sense of unfairness will make it difficult to find the correct answer for this problem.To that aim, the ‘Transportation expenses problem’ is employed, which is a kind of insight problem with a social context.  In order to investigate our hypothesis, we asked participants to solve the problem. The results indicated that the participants did not make a correct and unfair response but a fair and incorrect one. Furthermore, we compare solution rates for the standard ‘Transportation expenses problem’ problem with isomorphic problems that do not involve need to think about unfairness. The results indicate that the solution rates for the isomorphic problems were higher than for the standard version of the problem. The results are supportive of our hypothesis.  The results of experiments suggest that the sense of unfairness interferes with the problem solving.In particular, it changes weight of each choice participants can select.

著者

仁科 繁明 乾 敏郎

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.6, no.4, pp.432-443, 1999-12-01 (Released:2008-10-03)

参考文献数

15

被引用文献数

1

---

Two major problems in human object recognition are how we recognize objects from various viewpoints and how we memorize the shape of many objects. View-based object recognition theories have proposed that viewpoint independent recognition can be achieved by obtaining a certain number of views of an object. These theories do not involve the use of 3-dimensional information. In our previous research, however, we showed that the 3-dimensional structural information of objects could be utilized for recognition if enough time is available. The generalization from a familiar view to unknown views improved after trials only under the long reaction time conditions. According to the results, we supposed that there are two kinds of modules that compare the internal representation of objects and the input images. One is a 2-dimensional module that simply matches the images, and the other is a 3-dimensional module that involves transformation between relatively far viewpoints.In this study, we first showed that 3-dimensional complexity of the objects affects the generalization range. The effect was seen only under the long reaction time conditions. This result strongly supports the above hypothesis. In the second part of this study, we replicated our previous result that the generalization range was broadened as a subject becomes more familiar with objects. And we found that the improvement mainly depends on familiarity with each category of objects rather than each object itself. These results cannot be explained by purely view-based theories which are modeled simply with the GRBF (Generalized Radial Basis Functions) network or its derivations, because in such theories each view of each object is independently acquired.

著者

山崎 由美子 小川 昭利 入來 篤史

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.15, no.3, pp.366-377, 2008 (Released:2010-02-15)

参考文献数

57

被引用文献数

9

---

Researchers studying symmetry, one of the requirements for establishing stimulus equivalence, have contrasted inferences made by human and nonhuman animals and suggested that inference in each animal species is determined by several biological factors developed in the course of the evolution of a given species. This paper reviews the relevant experimental studies with human and nonhuman animals, including studies of young children, individuals with developmental disabilities, and nonhuman mammals. This work indicates that developmental, ethological, and behavioral factors are closely related to produce symmetry. In searching for the neural factors of symmetry, evidence from fMRI studies suggests that brain activity associated with equivalence relationships occurs in the processing of stimuli with or without temporal order. Thus, further research on the processing of temporal-spatial factors of stimuli is needed in both human and nonhuman animals. A detailed analysis of human subjects failing to establish equivalence relationships, and of nonhuman animals performing prerequisites for symmetry, such as identity matching and matching by exclusion, is crucial for understanding the biological origins of symmetry inferences.

著者

吉田 靖 服部 雅史

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.9, no.1, pp.89-102, 2002-03-01 (Released:2008-10-03)

参考文献数

28

被引用文献数

4

---

This study explored the effects of metacognitive processing on a creative idea generation task using the method of conceptual priming (Marsh, Bink, & Hicks, 1999). In our experiment, 81 undergraduate students were required to generate original creatures. In the task, the subjects' metacognition was manipulated through instructional variation. Factor analysis of the questionnaire data on the subjects' attitudes toward the task identified their elemental metacognitive strategies. The subjects' creative performances were examined in relation to metacognitive factors and the effects of priming. The results suggested that activating the metacognitive level of processing could cause an improvement in creativity. Implicit processes in creative thought and a search-range of the idea space were also discussed.

著者

水野 りか

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.9, no.4, pp.532-542, 2002-12-01 (Released:2008-10-03)

参考文献数

29

---

The first purpose of this study was to demonstrate the durability of spacing effects produced by the Modified Low-First Method. The Modified Low-First Method is an optimal spaced learning method which was derived from a reactivation theory of spacing effects and was designed to be effective by setting as advantageous spaces as possible for all items and for any learners with various working memory capacities. It consists of three principles; the first is to sort all items by their probabilities of recall in ascending order at the end of each learning session for the subsequent session, and the second is to omit items whose probabilities of recall have reached a certain level, and the third is to transit to a new learning session when the number of unrecalled items in a session have reached a certain number. The second purpose of this study was to extend a reactivation model to be able to predict probabilities of delayed recall by incorporating a forgetting function into the previous model. In Experiment, the probabilities of delayed recall in the control condition with simple repetition method and in the experimental condition with the Modified Low-First Method were compared. The result indicated that the Modified Low-First Method was constantly more effective than the former for as many as 14 days. In Simulation, a forgetting power function derived from the experimental data was incorporated into the existent model, and the experiment was simulated with it. The result showed that the estimated probabilities of delayed recall approximated closely to the experimental data, indicating the adequacy of the extended reactivation model.

著者

高野 雅典 加藤 正浩 有田 隆也

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.12, no.3, pp.221-233, 2005 (Released:2009-10-16)

参考文献数

26

被引用文献数

2

---

An individual having a Theory of Mind (ToM) can read the minds of others. If we assume further that the individual considers each of them also to have a ToM, then there should be recursive structure here. We believe that emergence and evolution of this structure are deeply linked to the evolution of intelligence. We construct two computational models: an abstract model describing fitness landscapes interacting with each other and a concrete model describing physically-situated agents moving around avoiding collisions. We conduct evolutionary simulations using the concrete model in order to investigate the dynamics inherent in the mechanism of recursion. Several unexpected properties of recursion were found, including a significant difference in fitness between odd levels and even levels of recursion. This is due to the asymmetry between level 0 and 1 (without and with ToM). We also discuss an evolution scenario in which human beings have evolved the ToM.

著者

森田 愛子

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.13, no.3, pp.417-427, 2006 (Released:2008-11-13)

参考文献数

27

被引用文献数

1

---

The purpose of the present study was to examine pseudo-homophone effect in a sentence verification task in which sentences included a two-kanji compound nonword in the case that the target was identified by an underline. In a sentence verification task, participants asked to judge whether the presented sentence was acceptable or not. Previous studies showed that participants responded more quickly when sentences included a pseudo-homophone than when they included a non-homophonic nonword. However, participants responded more slowly to pseudo-homophones than to non-homophonic nonwords when a context of the sentence (a sentence without a target) was presented first, and a target followed which required judgment. The current experiment showed that participants responded more quickly when sentences included a pseudo-homophone, even if an underline was added at the target. Thus, the pseudo-homophone facilitation effect was observed even when the participant did not need to search where a target was. The result suggested that the main factor of the pseudo-homophone facilitation effect would be simultaneous processing of the target stimuli and sentence meaning.