711 research outputs found

    Neurocognitive Informatics Manifesto.

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    Informatics studies all aspects of the structure of natural and artificial information systems. Theoretical and abstract approaches to information have made great advances, but human information processing is still unmatched in many areas, including information management, representation and understanding. Neurocognitive informatics is a new, emerging field that should help to improve the matching of artificial and natural systems, and inspire better computational algorithms to solve problems that are still beyond the reach of machines. In this position paper examples of neurocognitive inspirations and promising directions in this area are given

    Context Search Algorithm for Lexical Knowledge Acquisition

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    This work was supported by Polish Committee for Scientific Research grant N516 035 31/3499.A Context Search algorithm used for lexical knowledge acquisition is presented. Knowledge representation based on psycholinguistic theories of cognitive processes allows for implementation of a computational model of semantic memory in the form of semantic network. A knowledge acquisition using supervised dialog templates have been performed in a word game designed to guess the concept a human user is thinking about. The game, that has been implemented on a web server, demonstrates elementary linguistic competencies based on lexical knowledge stored in semantic memory, enabling at the same time acquisition and validation of knowledge. Possible applications of the algorithm in domains of medical diagnosis and information retrieval are sketched

    When Brain-inspired AI Meets AGI

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    Artificial General Intelligence (AGI) has been a long-standing goal of humanity, with the aim of creating machines capable of performing any intellectual task that humans can do. To achieve this, AGI researchers draw inspiration from the human brain and seek to replicate its principles in intelligent machines. Brain-inspired artificial intelligence is a field that has emerged from this endeavor, combining insights from neuroscience, psychology, and computer science to develop more efficient and powerful AI systems. In this article, we provide a comprehensive overview of brain-inspired AI from the perspective of AGI. We begin with the current progress in brain-inspired AI and its extensive connection with AGI. We then cover the important characteristics for both human intelligence and AGI (e.g., scaling, multimodality, and reasoning). We discuss important technologies toward achieving AGI in current AI systems, such as in-context learning and prompt tuning. We also investigate the evolution of AGI systems from both algorithmic and infrastructural perspectives. Finally, we explore the limitations and future of AGI

    Artificial intelligence and the limits of the humanities

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    The complexity of cultures in the modern world is now beyond human comprehension. Cognitive sciences cast doubts on the traditional explanations based on mental models. The core subjects in humanities may lose their importance. Humanities have to adapt to the digital age. New, interdisciplinary branches of humanities emerge. Instant access to information will be replaced by instant access to knowledge. Understanding the cognitive limitations of humans and the opportunities opened by the development of artificial intelligence and interdisciplinary research necessary to address global challenges is the key to the revitalization of humanities. Artificial intelligence will radically change humanities, from art to political sciences and philosophy, making these disciplines attractive to students and enabling them to go beyond current limitations.Comment: 39 pages, 1 figur

    Coordination and timing of speech gestures in Parkinson’s disease

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    Many individuals with Parkinson's disease (PD) experience articulatory difficulties, which often have a considerable impact on their quality of life. It is currently poorly understood which mechanisms underlie these articulatory difficulties. In order to learn more about these mechanisms, this dissertation examined the coordination and timing of speech gestures in PD speech. Both these aspects are intrinsic to articulation, but at current it is unknown how they relate to the articulatory difficulties observed in PD speech. The studies in this dissertation address this issue using state-of-the-art methods. In the first study of this thesis, the effect of levodopa on vowel articulation in PD was examined. The results from this study suggest that articulation of vowels is not influenced by levodopa. In the following two studies, spatial and temporal aspects of speech gestures have been examined. The results from these studies suggest that the timing of speech gestures, and also the coupling between speech gestures is impaired in PD. In the final study of this dissertation, the prevalence and nature of tongue tremor in individuals with PD were investigated. Using a computer algorithm, we found different types of tongue tremor in our data, which we believe may affect the timing of speech gestures. Together, the studies in this dissertation show that coordination and timing are indeed impaired in the speech of (at least some) individuals with PD. We believe that this impairment may be caused by the presence of malfunctioning regulatory mechanisms in PD speech

    Perception and Language: Using the Rorschach with People with Aphasia

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    This study explored the use of the Rorschach with eight individuals diagnosed with mild to moderate fluent or non-fluent types of aphasia to consider the extent to which the Rorschach captured aspects of language impairment not otherwise probed by traditional neurolinguistic measures. A ninth participant, with Wernicke’s aphasia, produced non-scorable responses and was therefore left out of all analyses. Of primary interest was whether the Rorschach, historically understood as a projective psychological instrument, would allow individuals living with language impairment to recognize, retrieve and coherently express words that reflected their thoughts. At the same time, this study sought to explore how the ambiguous nature of Rorschach inkblots could be leveraged together with traditional neuropsychological and linguistic measures, to provide insight into the relationship between perception, thought, psychological process and language - a multimethod assessment approach to describe the complex phenomena surrounding aphasia. This study demonstrated that individuals with reduced language function were able to provide responses to inkblots presented in a Rorschach assessment that were sufficient in number and quality to allow scoring and interpretation. Spearman’s rank-order correlation coefficients were calculated for WAB-R AQ score, CLQT Language Functions Domain Scores, the Rorschach cognitive processing simplicity, complexity scores and, the thought and perception EII and severe cognitive scores. Correlations among neurolinguistic and Rorschach cognitive processing and thought and perception variables, indicate a clear and intuitive relationship between these different measures. Finally, participants were administered a confrontation naming task in which a series of 10 black and white line drawings representing images of the most popular responses for each of the 10 Rorschach cards were presented. Results from that task confirmed that study participants could accurately retrieve the word for the most common responses, suggesting that object naming is not a limitation in the population of individuals with mild to moderate aphasia. Although differences between small groups of individuals with fluent and non-fluent aphasia could not be validated with significance testing, descriptive analyses showed some differences in means and standard deviations of Rorschach variable scores between the two groups. Specifically, individuals in the non-fluent aphasia group, who had more impairment in language ability, provided more vague responses, were typically only able to provide one defining characteristic of the blot (i.e., blends), and produced more communicative distortions (as measured by the thought and perception variables) than compared to individuals in the fluent aphasia group. The participant group, as a whole, produced a high degree of vague responses, was found to produce more simplistic descriptions of the blot, and typically only produced one defining characteristic of the blot (i.e., blends) - as compared to the neurotypical population. This study shows that the Rorschach can be administered to a population of individuals with mild to moderate fluent or non-fluent aphasia to generate scoreable results, with named objects comparable to those in norms derived from a neurotypical population. Limited amount and quality of supporting description of those named objects provided by the participants, however, limits the utility of the Rorschach from a psychological assessment perspective. In light of the dependence of this instrument on verbal ability, future studies might consider modified application of the Rorschach with administration that allows non-verbal responses (e.g., drawing, picture taking) as a means of supplementing participant verbal responses – to develop a richer understanding of the individual’s perception, and insight into their psychological state
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