Book Chapter10.1016/B978-0-12-397025-1.00235-9
The Olfactory Cortex
T J van Hartevelt,Morten L. Kringelbach +1 more
- 14 Feb 2015
- Vol. 2, pp 347-355
117
TL;DR: The breakdown of the sense of smell that can be devastating and is implicated in anhedonia, the lack of pleasure, a key feature of mental illness is described.
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Abstract: The olfactory system is a unique and important sense which has, however, been underrepresented in research. It plays a crucial role in food selection and reproduction, ensuring survival for both the individual and the species. The olfactory system is unique compared to the other senses in that, among other things, information is not relayed via the thalamus, but instead projected directly to cortical regions such as the orbitofrontal cortex. This article describes the information processing in the olfactory system from the olfactory epithelium to the cortical projection areas, based on translational research and imaging studies, and details the multimodal interactions between olfaction and gustation. Equally, we describe the breakdown of the sense of smell that can be devastating and is implicated in anhedonia, the lack of pleasure, a key feature of mental illness.
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Citations
Olfactory maps, circuits and computations.
TL;DR: It is argued that in contrast to brain circuits for other sensory modalities, both the piriform and the olfactory tubercle largely discard any topography present in the bulb and instead use distributive afferent connectivity, local learning rules and input from neuromodulatory centers to build behaviorally relevant representations of olf factory stimuli.
132
Homing in on consciousness in the nervous system: An action-based synthesis
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A review on the neural bases of episodic odor memory: from laboratory-based to autobiographical approaches.
TL;DR: The development of new laboratory-ecological approaches allowing for the controlled encoding and retrieval of specific multidimensional events that could open up new prospects for the comprehension of episodic odor memory and its neural underpinnings are suggested.
Domestic Dog Cognition and Behavior
Alexandra Horowitz
- 01 Jan 2014
TL;DR: This chapter will explore the neurocognitive and neuroconative bases of olfaction (the neurophysiological foundations of cognition and motivation), and discuss the behavioural, psychological, and semiotic dimensions of scent processing.
113
Olfactory consciousness and gamma oscillation couplings across the olfactory bulb, olfactory cortex, and orbitofrontal cortex
TL;DR: This hypothesis proposes that two types of projection neurons in the olfactory bulb, tufted cells and mitral cells, play distinct functional roles in bindings at neuronal circuits in the Olfactory cortex, and suggests a sequence of bindings in the bindings.
References
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TL;DR: Here, some fundamental topics regarding pleasure mechanisms and explicitly compare humans and animals are surveyed and the relation of pleasure to happiness is compared.
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Adam K. Anderson,Kalina Christoff,Iris Stappen,D. Panitz,Dara G. Ghahremani,Gary H. Glover,John D. E. Gabrieli,Noam Sobel +7 more
TL;DR: Using event-related functional magnetic resonance imaging (fMRI), it is found amygdala activation to be associated with intensity, and not valence, of odors, suggesting that the affective representations of intensity and valence draw upon dissociable neural substrates.
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The Olfactory Bulb: Coding and Processing of Odor Molecule Information
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Emotion, olfaction, and the human amygdala: Amygdala activation during aversive olfactory stimulation
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