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Olfactory Neuroscience

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Olfactory neuroscience is the study of the neural mechanisms underlying the sense of smell, focusing on the structure and function of the olfactory system, including olfactory receptors, neural pathways, and brain regions involved in odor perception and processing.
lightbulbAbout this topic
Olfactory neuroscience is the study of the neural mechanisms underlying the sense of smell, focusing on the structure and function of the olfactory system, including olfactory receptors, neural pathways, and brain regions involved in odor perception and processing.

Key research themes

1. How does extrinsic neuromodulation shape early olfactory bulb processing and influence olfactory-driven behavior?

This research area investigates the mechanisms whereby extrinsic neuromodulators originating from distant brain centers regulate sensory processing within the olfactory bulb (OB). Such modulation alters synaptic and network properties in early olfactory circuits, thereby shaping odor perception, discrimination, and related behaviors. Understanding how these neuromodulators influence OB circuits elucidates the adaptive flexibility of olfactory coding in response to internal states like attention, hormonal status, and experience.

Key finding: Comprehensively reviews neuromodulatory inputs projecting from outside the rodent OB including cholinergic, serotonergic, noradrenergic, and dopaminergic systems, highlighting their receptor targets and resulting effects on... Read more
Key finding: Offers mechanistic insights into how classical neuromodulators (dopamine, acetylcholine, noradrenaline, serotonin) and the endocannabinoid system modulate synaptic dynamics within OB circuits. Demonstrates that extrinsic... Read more
Key finding: Based on recent experimental evidence, reveals that the anterior olfactory nucleus (AON), an olfactory cortical structure with extensive reciprocal connections to the OB and higher olfactory centers, integrates bottom-up... Read more

2. What are the neural coding strategies and temporal dynamics underlying odor representation and perception in primary olfactory cortex?

This theme addresses how odors are represented at cortical processing stages, with a focus on temporal patterns, multisensory interactions, and neural population coding. It investigates odor-evoked activation time courses, habituation, sniff-linked activity, and the influence of contextual and temporal parameters on neural responses. Understanding these cortical processing mechanisms elucidates how odor identity, intensity, and episodic features are encoded to guide perception and behavior.

Key finding: In insect olfactory projection neurons, reports that identical odor stimuli evoke distinct neural response patterns depending on temporal stimulus structure (intermittent versus continuous), shaped by GABAa receptor-mediated... Read more
Key finding: Shows that human posterior piriform cortex (PPC) responds not only to odors but also to object-related visual and auditory stimuli that are congruent with odors, and PPC activation increases linearly with the number of... Read more

3. How do cortical and subcortical structures represent and compute odor hedonic value and emotion-related features in humans and animals?

This theme explores the neural substrates underlying the perception of odor pleasantness, arousal, and emotional valence, focusing on brain areas implicated in reward and affect. It investigates how olfactory stimuli with different hedonic and arousal properties activate limbic, striatal, and olfactory cortical structures, linking odor perception to motivational states and behavior. The research sheds light on mechanisms through which odors influence emotions, preferences, and reward-related learning.

Key finding: Demonstrates in mice and humans that the posterior olfactory bulb and olfactory tubercle (part of ventral striatum) encode odorant pleasantness and that optogenetic activation of posterior OB elicits self-stimulation... Read more
Key finding: Using fMRI in healthy females with controlled odor intensity, finds that pleasantness (valence) of odors correlates with activation in the cingulate gyrus, insula, hippocampus, amygdala, and superior temporal gyrus, whereas... Read more
Key finding: Identifies the fifth functional connectivity gradient in the human brain as anatomically anchored to olfactory cortical and subcortical areas (piriform, orbitofrontal, entorhinal cortex, amygdala) comprising the... Read more

All papers in Olfactory Neuroscience

by C F and 
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Newborn rats maintain mother-litter bonds by using olfactory signals. At birth, units in the olfactory glomeruli (OG) are immature and vulnerable to noxious epigenetic factors like undernutrition. Because little is known about the effects... more
The study aimed to check whether animals can retain directed forepaw reaching (DFR) function after stopping cyclosporine which is used to prevent immunorejection in xenotransplant of Olfactory Encheating cells (OECs) in Albino Swiss... more
O objetivo deste estudo foi identificar entre o público feminino os fatores comportamentais relacionados à seleção, guarda e reuso de sacolas promocionais provenientes do varejo de moda, de forma a estabelecer premissas para o... more
Este estudo analisou o impacto do neurodesign e do marketing sensorial na percepção e intenção de compra dos consumidores, com foco na campanha “Cuide-se Bem Boa Noite” de O Boticário. A pesquisa explorou conceitos de marketing,... more
From the Author Like millions around the world, I suffered a profound and persistent loss of smell and taste following a COVID-19 infection—an invisible disability that lasted for two years and disrupted not only sensory experience but... more
Author Background and Context The design of PsiloRexin was developed during a period of personal health challenges experienced by the author, Seyedrasool Sadrieh. After contracting COVID-19 in 2020, he experienced a prolonged loss of... more
La biología de Pogonomyrmex cunicularius pencosensis (Hymenoptera: Formicidae) en relación con su comportamiento como dispersora de semillas con eleosoma en el Noroeste semiárido argentino
The fibrotic lesion formation is the main deterrent at regeneration of neurons in CNS injuries. In this paper we studied fibrotic scar formation in rat corticospinal tract lesion after one year survival time. The glial scar formation and... more
This work is focused on the characterization of the composition of a CO2 supercritical fluid extract of infected Aquilaria sinensis (Chinese agarwood) collected in the Dongguan area. The constituents of this extract were analyzed by GC-MS... more
Nano technology plays a unique and pivotal role in the development of brain specific drug delivery, imaging and diagnosis. Targeted drug delivery is a means of concentrating dugs at a specific site relative to other parts of the body. It... more
For approximately 10 h before ovulation, female goldfish release the gonadal steroid 17α,20β‐dihydroxy‐4‐pregnen‐one (17,20β‐P) to the water where it functions as a potent sex pheromone that induces in males a rapid (15‐min) increase in... more
Paolo Mategazza (1831Mategazza ( -1910)). Quando iniciei o doutoramento tinha um conjunto de expectativas completamente irrealistas. O entusiasmo, aliado à vontade de querer inovar e mudar o mundo, trouxe-me alguns percalços e angústias... more
Development of the olfactory pathway requires interaction between cells and signals of different origin. Olfactory receptor neurons (ORN) in the olfactory placodes (OP) extend axons towards the forebrain (FB); with innervation taking... more
Permintaan sayuran yang aman dan higienis semakin diminati oleh masyarakat modern. Meningkatnya standar hidup masyarakat dan kesadaran masyarakat terhadap makanan sehat menyebabkan pergeseran pola konsumsi yang berubah. Munculnya... more
A crescente competitividade do varejo, acentuada pela pandemia de Covid-19, impõe desafios significativos para pequenas e médias empresas (PMEs) que operam apenas fisicamente. Muitas vezes, essas empresas carecem do conhecimento... more
The use of nanotechnology in drug delivery and targeting has proven to be extremely valuable. The Nose-to-brain route of drug administration acts as a more encouraging alternative to the traditional routes of medications acting on the... more
A mis orientadores: al Caco, por estar siempre a la mano, y por transmitir y compartir, en pocas palabras pero certeras, algo de ciencia, biología, evolución, filosofía, literatura, buen cine y boliche, todo mezclado en la misma oración;... more
O estudo teve como objetivo analisar o composto de marketing desenvolvido pelo Varejista de vestuário "A" com a finalidade de gerar experiências. Para tal, foi realizado um estudo de caso qualitativo exploratório. Foram utilizadas como... more
The aim of this study is to analyze the influence of experiential marketing and emotional branding towards consumer loyalty at Miniso Mall Olympic Garden Malang. The data used in this reseacrh is a primary data, collected from over 100... more
RESUMEN. Poco se sabe acerca del efecto de la contaminación del aire de las grandes ciudades sobre la función olfativa. Usando una metodología psicofísica, se comparó el desempeño olfativo de residentes de la ciudad de México, una región... more
For human olfactory functional MRI studies, the primary olfactory cortex (POC) suffers severe magnetic susceptibility artifacts, which adversely influences the detectability and reproducibility of the olfactory fMRI data and its clinical... more
Objective: We assessed whether a nasal spray containing zinc gluconate (ZG) compromises the integrity of olfactory epithelium and olfactory function. Methods: Axonal transport of horseradish peroxidase from olfactory epithelium to the... more
Permintaan sayuran yang aman dan higienis semakin diminati oleh masyarakat modern. Meningkatnya standar hidup masyarakat dan kesadaran masyarakat terhadap makanan sehat menyebabkan pergeseran pola konsumsi yang berubah. Munculnya... more
Permintaan sayuran yang aman dan higienis semakin diminati oleh masyarakat modern. Meningkatnya standar hidup masyarakat dan kesadaran masyarakat terhadap makanan sehat menyebabkan pergeseran pola konsumsi yang berubah. Munculnya... more
Modern perfumery relies heavily on cedrol-derived base notes, such as Ambrocenide® (Symrise), Ambermax® (Givaudan), Ambrostar™ (Symrise), Amber Xtreme™ (IFF), Cedramber® (IFF), Norlimbanol® (Firmenich) / Timberol® (Symrise), to achieve... more
Penelitian ini bertujuan untuk mengetahui pengaruh harga, lokasi dan fasilitas terhadap keputusan berkunjung pada objek wisata hutan mangrove desa Kurau Barat, Kabupaten Bangka Tengah. Penelitian ini termasuk jenis penelitian deskriptif.... more
Lexical–gustatory synaesthesia is a rare phenomenon in which the individual experiences flavour sensations when they read, hear, or imagine words. In this study, we provide insight into the neural basis of this form of synaesthesia using... more
Experiential marketing memberi pelanggan kesempatan untuk merasakan dan berinteraksi dengan merek produk, dan jasa dengan cara sensorik yang menyediakan lyanan untuk mendaptkan informasi pengalaman pribadi membantu orang untuk berhubungan... more
Atualmente é cada vez mais frequente as pessoas mudarem o seu comportamento de compra. Os consumidores procuram ao máximo embalagens que de alguma maneira despertem variadas reações e emoções, fortes, fracas, positivas ou negativas.... more
Congenital ataxia and mental retardation are mainly caused by variations in the genes that affect brain development. Recent reports have shown that mutations in the CA8 gene are associated with mental retardation and ataxia in humans and... more
O Manual de Embalagem é o resultado de significativa iniciativa de estado, para o enriquecimento do conhecimento em Design, com a gestão do IDI-MAM no Rio de Janeiro, na década de 70. Quando, na ocasião, foram convidados e/ou inscritos... more
Introduction: The blood-brain barrier (BBB) represents a stringent barrier for delivery of neurotherapeutics in vivo. An attempt to overcome this barrier is represented by the direct transport of drugs from the nose to the brain along the... more
A possible mechanism that provides increased selectivity of olfactory bulb projection neurons, as compared to that of the primary olfactory receptor neurons, has been proposed. The mechanism operates at low concentrations of the odor... more
Olfactory adaptation, characterized by attenuation of response to repeated odor stimulations or continuous odor exposure, is an intrinsic feature of olfactory processing. Adaptation can be induced by either "synaptic depression" due to... more
Abstrak Ditengah persaingan antar Perguruan Tinggi dalam merebut kepercayaan masyarakat, maka sudah selayaknya para pengelola Perguruan Tinggi terus berupaya mengkaji berbagai strategi yang kemudian dapat dijadikan dasar dalam pengambilan... more
The Hydrogen sulphide (H2S) loss, an odorous molecule of small dimensions, through NalophanTM bags has been studied.The diffusion coefficient of H2S through the NalophanTM film was evaluated using the Fick’s law, and it turnedout to be... more
Individuals with autism spectrum disorders (ASDs) exhibit atypical sensory characteristics, impaired social skills, deficits in verbal and nonverbal communication, and restricted and repetitive behaviors. The relationship between sensory... more
De dentro do perfume: particularidades etnográficas sobre o desenvolvimento de sensibilidade entre conhecedores de perfumaria de luxo From inside the perfume: ethnographic particularities about the development of sensitivity among luxury... more
This study sought to identify the use of Romero Britto art as a marketing strategy in marketing products. He sought to understand the motivations that led the companies investigated to use art as a marketing strategy. The type of research... more
Brain targeting has always been challenging due to the presence of various physiological barriers resulting in low bioavailability via the oral and parenteral route. Altering the integrity of these barriers so as to permit the drugs to... more
A portable system has been developed for quantifying odors in atmospheric air. Panelists compare the intensity of ambient odors with the intensity of discrete levels of 1-butanol provided by the olfactometer. Range of delivered 1-butanol... more
La percepción de olores siempre ha estado relacionada con el comportamiento del ser humano, sin embargo, como estrategia empresarial es nueva; en su aplicación y medición. El objetivo principal es conocer el impacto del merchandising... more
The olfactory bulb, a crucial structure in the olfactory system, plays a pivotal role in odour processing, memory formation, and emotional responses. Manipulating the olfactory bulb has emerged as a powerful tool in neuroscience research,... more
Highlights d Deletion of an enhancer reduces expression of class I odorant receptors in mice d Class I receptor depletion selectively reduces acid responses in the olfactory bulb d Loss of class I receptors and glomeruli reduces... more
Increasing the quantity of brain insulin has been demonstrated to play an important role in various neurological and pathological conditions. Controlling brain insulin levels might thus be important for cognitive functions and food... more
Experiential marketing memberi pelanggan kesempatan untuk merasakan dan berinteraksi dengan merek produk, dan jasa dengan cara sensorik yang menyediakan lyanan untuk mendaptkan informasi pengalaman pribadi membantu orang untuk berhubungan... more
Fantosmi olarak bilinen koku varsanıları az anlaşılmış bir fenomendir. Geniş bir ayırıcı tanı yelpazesiyle ilişkili bulunmuştur. Buna rağmen çoğu olgu idiyopatiktir. 70 yaşında metastatik küçük hücreli karsinomunun öncül belirtisi olarak... more
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