ArticleIdentification of single dissimilar odors is achieved by humans with a single sniff
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2018, World Journal of Otorhinolaryngology - Head and Neck SurgeryCholinergic Sensorimotor Integration Regulates Olfactory Steering
2018, NeuronCitation Excerpt :For example, mammals often use sniffing to detect an odorant or distinguish between different odorants. The rhythmic inhalation and exhalation of the air flow generated by sniffing produces an oscillation in the concentration of the odorant sampled by the nose (Karpov, 1980; Laing, 1986; Welker, 1964), which is temporally coupled to the sensory response of olfactory processing neurons, providing a potential mechanism for encoding the identity and concentration of the odorants (Kepecs et al., 2006). While these previous studies demonstrate the reciprocal modulation of sensory input and behavioral output during sensorimotor integration, the underlying molecular and cellular mechanisms are largely unknown.
Theta Oscillations Rapidly Convey Odor-Specific Content in Human Piriform Cortex
2017, NeuronCitation Excerpt :The rapid differentiation of odor information in human PPC accords well with a variety of human research findings using other techniques. Psychophysical studies suggest that odor intensity can pre-attentively modulate sniffing behavior as early as 150 ms (Johnson et al., 2003), and human subjects require a sniff of only 420 ms in order to discriminate odors (Laing, 1986). Scalp EEG studies and amygdala iEEG studies report that olfactory-evoked potentials occur in a similar time window of 300–400 ms (Lorig, 2000), and electro-olfactogram (EOG) responses measured at the human epithelium reveal negative potentials arising before 500 ms (Lapid et al., 2011).
Wine Tasting: A Professional Handbook
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