Colloquia occur: Selected Mondays at 4:00 pm - 5:00 pm - Room PY 101.
Colloquia titles will be posted as they become available.
Also see: http://www.indiana.edu/~clcl/Q733_WWW/

  • 09/10    Jesse Prinz, University of North Carolina, Chapel Hill - Abstract
  • 09/17    Evan Thompson, University of Toronto - Abstract
  • 10/08    Jay McClelland, Stanford University - Abstract
  • 10/22    Sue Becker, McMaster University - Abstract
  • 10/29    Daniel Schwartz, Stanford University - Abstract

Abstract

9/10:    Jesse Prinz, University of North Carolina, Chapel Hill
Title: The Emotional Basis of Moral Values
Abstract: There is a long-standing philosophical view according to which moral values have an emotional basis. Some philosophers reject this view, however, and it has been the subject of considerable debate. Recent results from cognitive neuroscience, psychology, and psychopatholoy offer strong support for the emotional view. Recent research is also moving beyond old theories by revealing the specific nature of the emotions that undergird morality. In this talk, I review recent work in moral psychology and propose a theory that systematizes the findings. One implication of this theory is that there can be considerable variation in morality, because cultures can condition emotional responses in different ways. Some moral debates may result from incommensurable culturally conditioned emotional dispositions.

9/17:    Evan Thompson, University of Toronto
Title: Meditation and the Neuroscience of Consciousness
Abstract: The main idea to be explored in this lecture is that neuroscience can advance the investigation of consciousness by employing introspective reports based on contemplative mental training of attention and awareness. The following topics will be discussed: (i) issues regarding introspection in cognitive science; (ii) the nature of contemplative mental training; (iii) contemplative introspection and the neurodynamics of consciousness; (iv) experience-dependent brain development.

10/8:    Jay McClelland, Stanford University
Title: Graded Constraints in English Word Forms
Abstract: I will a describe graded constraint theory of English word forms that addresses the distribution of forms in the lexicon, the goodness judgments given by native speakers of nonwords as candidate wordforms, and the pattern of errors seen in language impaired individuals including dysfluent aphasics and individuals with specific language impairment. The theory is applied to the rhymes of English monosyllabic monomorphemes (items like 'cat', 'hold' and 'clamp'). Within a template specifying possible rhymes, a number of graded constraints are identified. For example, in rhymes containing at least one stop consonant, there is a graded constraint favoring short vowels, a graded constraint favoring unvoiced vs voiced obstruents, a constraint favoring coronal articulation, and a constraint against added embellishments such as a nasal, fricative, liquid, or second stop consonant (as in 'apt'). Each constraint affects the goodness of a rhyme type in a graded, cumulative fashion. Occurrence rates of different types of rhymes in the language conform closely to the predictions of both non-parametric and parametric versions of the theory. By adding a cut-off threshold, the theory can explain with good accuracy which types of rhymes occur at all and which do not occur, although both linear and interaction terms are necessary to give a complete account. The theory also accounts well for native speaker's judgments of the relative goodness of different rhyme types, although there are subtle differences between the patterns of occurrence and the patterns of judgments.

10/22:    Sue Becker, McMaster University
Title: Hippocampal encoding of space and time
Abstract: The involvement of the hippocampus in space is widely acknowledged but remains poorly understood. In the first part of this talk, I will present a computational theory of the neural mechanisms in the parietal and temporal lobes that support spatial navigation, imagery, and episodic recall (Byrne, Becker and Burgess, Psych Review, in press). Predictions of the model are currently being tested in an fMRI study of spatial memory and imagery in virtual reality (with Neil Burgess and John King), and in a VR study of implicit learning of spatial layouts using the "yellowcab" game (with Mike Kahana). In the second part of the talk, I will consider how the hippocampus encodes spatio-temporal information. In recent work with Geoff Hinton, we show how a Restricted Boltzmann Machine model of the hippocampus can account for the encoding of episodic sequences. The model also postulates a role for theta oscillations and forward and reverse sequence replay in learning the spatio-temporal structure of events.

10/29:    Daniel Schwartz, Stanford University
Title: TBA
Abstract: 0


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