Invited Symposium（YIS-01 General）
日時：Tuesday, July 26, 8:30‐10:30
場所：Annex Hall F202
Early career psychologists’ leadership and initiative in Japan and around the world
In order to strengthen the ties among Early Career Psychologists (ECPs) committees of psychological associations around the world, this symposium will introduce the initiatives
made by each ECP committees and explore the ways they can work together. The aim of the symposium is to increase the awareness of initiatives by ECPs in other parts of the world,
to broaden the horizon and motivate one another, and to understand the importance of ECPs getting together. Three speakers from the ECP committee of the psychological associations
in Japan (Japanese Psychological Association), the US (American Psychological Association), and Taiwan (Taiwan Psychological Association) will present their initiatives and efforts to
enhance their presence in their communities, and discuss the possible roles of ECPs to facilitate the psychological science around the world.
北大サマーインスティテュートで来日されるPeter Ford Dominey博士と Jocelyne Ventre-Dominey博士の講演会を行ないます。Peter Ford Dominey博士はロボットやニューラルネットを使った言語理解のモデル研究、Jocelyne Ventre-Dominey博士はヒトでfMRI、脳波、DTI等を使って言語意味ネットワークの研究をされています。皆さまのご参加をお待ちいたします。
場所：北海道大学 学術交流会館１F 第４講義室13:00-14:30
Speaker: Peter Ford Dominey PhD (CNRS Research Director, Robot Cognition Laboratory)
Title: “Neural basis of semantic representations: Grounding Meaning in Sensory-Motor Experience and Narrative with the iCub”
Based on data from human and non-human primate neuroscience we have developed neural network models of grammatical construction
processing for sentence comprehension and production. These models are embedded in a cognitive system that allows the iCub
humanoid to interact and cooperate with people. Language semantics was initially linked directly to robot sensory and motor
systems via symbolic interfaces. The semantics is extended in two dimensions: Neuroscience indicates that meaning is grounded
in experience and encoded in convergence-divergence zones (CDZ) centred on highly interconnected areas such as the temporal-parietal
junction. We thus developed self-organizing maps that encode and recall the robot’s sensorimotor experience based on this CDZ framework.
In parallel, we ground semantics over extended time in narrative constructions that allow meaning representations to be enriched by
establishing causal links between events and intentional states over time. The grammatical construction models are extended to
narrative constructions by including narrative context. This is part of a long term effort to build towards narrative construction of meaning.
Speaker: Jocelyne Ventre-Dominey PhD (Senior Researcher, INSERM-Unity 1208, University of Lyon)
Title: “Neural basis of semantic representation: I- Human neuroscience”
This presentation will address in human the conceptualization processes and their neural substrates during events analysis.
The main questions are: 1) how event comprehension unfolds when we process pictures and auditory or visually presented sentences
describing events and 2) Is there a common neural network and processes in semantic analysis of events independently of the sensory
modality? We address these issues by different behavioural and neuroimaging approaches including the localisation of the neural
substrates and their connections respectively by fMRI activation and DTI tractography as well as the spatio-temporal interactions
in the network by evoked potentials technique. In this talk I will present the results of these successive studies showing
(1) different levels of an imageability score corresponding to the capability of forming a mental image during sentence reading,
(2) a shared neural network activated during event comprehension independently of the visual or language modality,
(3) significant structural connections between the majority of the nodes in the network associated to correlations between their
neural activities, including the anterior temporal pole and parietal, para-hippocampal, prefrontal cortex,
(4) significant correlations between the imageability of sentences for individual subjects and the relative pathway density
issued from these parieto-temporal and temporo-frontal cortical tracts suggesting a potential functional link between comprehension
and the temporo-parieto-frontal connectivity strength and finally (5) late positivity in the evoked potentials activity recorded in
common for sentences and images. These data help to define a “meaning” network that includes components of recently characterized
systems for semantic memory, embodied simulation, and visuo-spatial scene representation.