Results 161 to 170 of about 97,111 (181)

External nares and olfactory perception

Experientia, 1979
Lower vertebrates have more widely separated external nares than higher forms and are thus better adapted to utilize olfactory tropotaxis, or stereolfaction, than higher vertebrates which, on account of their flexible necks, must utilize klinotaxis. Snakes and tubenosed bats break the rule on account of their specialized life styles.
openaire   +2 more sources

Olfactory networks: from sensation to perception

Current Opinion in Genetics & Development, 2011
Olfactory networks, comprised of sensory neurons and interneurons, detect and process changes in the chemical environment to drive animal behavior. Recent studies combining genetics with behavioral analyses and imaging in worms, flies and mice have revealed new insights into the mechanisms of olfaction. In this discussion, we focus on three interesting
Sarah G, Leinwand, Sreekanth H, Chalasani   +1 more
openaire   +2 more sources

Distorted olfactory perception: A systematic review

Acta Oto-Laryngologica, 2012
The sense of smell provides people with valuable input from the chemical environment around them. The human sense of smell generally fails in three ways; one is an intensity reduction and the other two are the quality of changes. Smell disorders can be classified into central or peripheral depending on their origin.
Seok-Chan, Hong, Eric H, Holbrook, Donald A, Leopold, Thomas, Hummel   +3 more
openaire   +2 more sources

Grounding Semantics in Olfactory Perception

Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers), 2015
Multi-modal semantics has relied on feature norms or raw image data for perceptual input. In this paper we examine grounding semantic representations in olfactory (smell) data, through the construction of a novel bag of chemical compounds model. We use standard evaluations for multi-modal semantics, including measuring conceptual similarity and cross ...
Douwe Kiela, Luana Bulat, Stephen Clark
openaire   +1 more source

Chapter 5. Olfactory perception

2012
From a functional perspective odor perception involves the detection and recognition of complex chemical blends against an ever-changing chemical background. This chapter examines one account of how this might occur using an object recognition approach (ORA).
openaire   +1 more source

Olfactory coding in the perception of semiochemicals

Journal of Chemical Ecology, 1988
Information processing in the olfactory pathway underlying the perception of semiochemicals by insects is discussed. Both the chemical message for mates and the message for food consist of blends of chemicals. Olfactory receptors in an insect species are tuned to the detection of those compounds which comprise such chemical messages for that species ...
Visser, J.H., de Jong, R.
openaire   +3 more sources

Introversion-Extraversion and Dimensions of Olfactory Perception

Perceptual and Motor Skills, 1987
A possible relationship between odor perception and introversion-extraversion was explored. 195 subjects completed Eysenck's Introversion-Extraversion Scale and rated strength, familiarity, and pleasantness of four odors. Zero-order correlations were examined and the data were factor analyzed.
E E, Filsinger, R A, Fabes, G, Hughston
openaire   +2 more sources

Modulation of Olfactory Perception

2016
In “Modulation of olfactory perception”, Keller reviews the flow of information from other parts of the mind toward olfaction. There is substantial input into the olfactory system from both cognitive processes, a phenomenon known as cognitive penetration of perception, and from other perceptual systems.
openaire   +1 more source

Early olfactory computations and perception

The FASEB Journal, 2007
In this talk I will present an overview of the olfactory bulb network from a computational point of view. I will discuss the functionality of the different types of neurons, the networks they form with respect to computing stable, context independent representations of olfactory stimuli.
openaire   +1 more source

Olfactory perception, cognition, and dysfunction in humans

WIREs Cognitive Science, 2013
AbstractThe main functions of olfaction relate to finding food, avoiding predators and disease, and social communication. Its role in detecting food has resulted in a unique dual mode sensory system. Environmental odorants are ‘smelled’ via the external nostrils, while volatile chemicals in food—detected by the same receptors—arrive via the nasopharynx,
openaire   +2 more sources