Attention to olfaction

Abstract. Olfaction is unique among the senses in that signals from the peripheral sensory receptors bypass the thalamus on their way to the cortex. The fact that olfactory stimuli are not gated by the thalamus has led some researchers to suggest that people may be unable to selectively direct their attention toward the olfactory modality. We examined this issue in an experiment where participants made speeded intensity (strong vs weak)-discrimination responses to an unpredictable sequence of olfactory and visual stimuli. Attention was directed to either olfaction or to vision by means of an informative cue that predicted the likely modality for the upcoming target on the majority of trials. Participants responded more rapidly when the target was presented in the expected rather than the unexpected modality, showing that people can selectively attend to olfaction.

[1]  H. Nagata,et al.  The merging of the senses: integration of subthreshold taste and smell , 2000, Nature Neuroscience.

[2]  Jon Driver,et al.  Crossmodal attention , 1998, Current Opinion in Neurobiology.

[3]  B Sojka,et al.  Attentional modulation of central odor processing. , 1998, Chemical senses.

[4]  Gerd Kobal,et al.  Selective attention to the chemosensory modality , 2000, Perception & psychophysics.

[5]  Gerd Kobal,et al.  Pain-related electrical potentials of the human nasal mucosa elicited by chemical stimulation , 1985, Pain.

[6]  W S Cain,et al.  Mutual action of taste and olfaction. , 1977, Sensory processes.

[7]  M. Gazzaniga,et al.  Representation of Visuotactile Space in the Split Brain , 2001, Psychological science.

[8]  B. Pause,et al.  Central processing of odor concentration is a temporal phenomenon as revealed by chemosensory event-related potentials (CSERP). , 1997, Chemical senses.

[9]  E. Rolls,et al.  The representation of pleasant touch in the brain and its relationship with taste and olfactory areas. , 1999, Neuroreport.

[10]  Gerd Kobal,et al.  Differences in human chemosensory evoked potentials to olfactory and somatosensory chemical stimuli presented to left and right nostrils , 1992 .

[11]  T. Hummel,et al.  Peripherally obtained electrophysiological responses to olfactory stimulation in man: electro-olfactograms exhibit a smaller degree of desensitization compared with subjective intensity estimates , 1996, Brain Research.

[12]  J. Price,et al.  The organization of networks within the orbital and medial prefrontal cortex of rats, monkeys and humans. , 2000, Cerebral cortex.

[13]  W. Cain.  Olfaction and the common chemical sense: some psychophysical contrasts. , 1976, Sensory processes.

[14]  J. Newman.  Thalmic Contributions to Attention and Consciousness , 1995, Consciousness and Cognition.

[15]  Riitta Salmelin,et al.  Odorants activate the human superior temporal sulcus , 1996, Neuroscience Letters.

[16]  B. Eskenazi,et al.  The nature of unilateral neglect in the olfactory sensory system , 1988, Neuropsychologia.

[17]  L. Marks,et al.  Attention and the detectability of weak taste stimuli. , 1998, Chemical senses.

[18]  Joseph L. Price,et al.  Beyond the primary olfactory cortex: olfactory-related areas in the neocortex, thalamus and hypothalamus , 1985 .

[19]  Georg v. Békésy,et al.  OLFACTORY ANALOGUE TO DIRECTIONAL HEARING. , 1964 .

[20]  R. Klein,et al.  The effects of nicotine on spatial and non-spatial expectancies in a covert orienting task , 1998, Neuropsychologia.

[21]  C. Murphy,et al.  Event-related brain potentials to attended and ignored olfactory and trigeminal stimuli. , 2000, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

[22]  C. Spence,et al.  Multisensory perception: Beyond modularity and convergence , 2000, Current Biology.

[23]  C. Spence,et al.  On measuring selective attention to an expected sensory modality , 1997, Perception & psychophysics.

[24]  H. Stefan,et al.  Multiple olfactory activity in the human neocortex identified by magnetic source imaging. , 1997, Chemical senses.

[25]  Christopher D. Wickens,et al.  The Structure of Attentional Resources , 1980 .

[26]  Thierry Bal,et al.  Sensory gating mechanisms of the thalamus , 1994, Current Opinion in Neurobiology.

[27]  D. Amaral,et al.  The afferent input to the magnocellular division of the mediodorsal thalamic nucleus in the monkey, Macaca fascicularis , 1987, The Journal of comparative neurology.

[28]  D. Lancet,et al.  Concentration-dependent changes of perceived odor quality , 1988 .

[29]  G Kobal,et al.  Olfactory and intranasal trigeminal event‐related potentials in anosmic patients , 1998, The Laryngoscope.

[30]  S. Monsell,et al.  Costs of a predictible switch between simple cognitive tasks. , 1995 .

[31]  J. Smythies.  The Functional Neuroanatomy of Awareness: With a Focus on the Role of Various Anatomical Systems in the Control of Intermodal Attention , 1997, Consciousness and Cognition.