Respiratory-phase-related coding of olfactory information in the olfactory bulb of awake freely-breathing rabbits
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The Vomeronasal System Can Learn Novel Stimulus Response Pairings
2019, Cell ReportsOlfactory insights into sleep-dependent learning and memory
2014, Progress in Brain ResearchCitation Excerpt :For example, the demonstration of odor-evoked differences between sleep stages could simply reflect the fact that odor was delivered less efficiently in one of those stages, rather than reflecting intrinsic neurophysiological differences. Moreover, olfactory studies have long shown that the temporal relationship between odor onset and onset of inhalation (sniff) has a crucial impact on olfactory perception and odor coding (Bathellier et al., 2008; Buonviso et al., 2003; Carey and Wachowiak, 2011; Chaput, 1986; Shusterman et al., 2011), but in some of the sleep studies reported here, odor-evoked responses were characterized without regard to respiratory phase, possibly accounting for some of the observed variability. Throughout history, sleep has been viewed as a gateway to knowing the unknown.
Temporal Processing in the Olfactory System: Can We See a Smell?
2013, NeuronCitation Excerpt :In awake rodents, a large number of glomeruli are activated by single odorants (Johnson and Leon, 2007; Mori et al., 2006; Salcedo et al., 2005; Vincis et al., 2012). During dense glomerular activation a relatively large number of MT cells respond to odor input by transiently locking their spiking to the ongoing respiratory rhythm (Figure 4; Bhalla and Bower, 1997; Chaput, 1986; Cury and Uchida, 2010; Gschwend et al., 2012; Pager, 1985; Shusterman et al., 2011). For example, Shusterman et al. (2011) showed that approximately half of MT-odor pairs (59%) show a phasic sniff-locked response.
All in a Sniff: Olfaction as a Model for Active Sensing
2011, NeuronCitation Excerpt :One longstanding—and still unresolved—question is whether the precise timing of odorant-evoked activity relative to the timing of inhalation plays a role in odor perception. Modeling and experimental data support the idea that spike timing relative to inhalation can robustly represent odor information (Chaput, 1986; Hopfield, 1995; Schaefer and Margrie, 2007; Shusterman et al., 2011). However, whether animals actually use a sniff-based temporal code remains unclear.
Responses to olfactory and intranasal trigeminal stimuli: Relation to the respiratory cycle
2011, NeuroscienceCitation Excerpt :This change appears to “prime” the OB for stimulation. Further, numerous studies have suggested that olfactory information is encoded in the precise timing of mitral cell spiking relative to the respiratory cycle (Chaput, 1986; Margrie and Schaefer, 2003; Schaefer and Margrie, 2007). Also, synaptic interactions thought to be important in shaping odor representations depend on the kinetic properties of sensory input to the OB (Balu et al., 2004; Arevian et al., 2008).
Sniffing out the contributions of the olfactory tubercle to the sense of smell: Hedonics, sensory integration, and more?
2011, Neuroscience and Biobehavioral ReviewsCitation Excerpt :In contrast, the spine-poor neurons of Millhouse and Heimer (1984) are likely intermittent and regular spiking cells (and perhaps GABA-ergic). Of notable interest to this review, the authors also used a current-injection protocol to mimic respiratory rhythm-related responses in the cells to see if olfactory tubercle neurons display a respiratory phase-dependent activity which is commonly observed within other olfactory areas (Chaput, 1986; Sobel and Tank, 1993; Wilson, 1998; Spors et al., 2006; Carey et al., 2009). Indeed, both intermittent and regular spiking cells showed phasic responses with each ‘sniff-like’ current pulse (Chiang and Strowbridge, 2007).