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Petitpierre G, Dind J, De Blasio C. Olfactive short-term habituation in children and young people with profound intellectual and multiple disabilities. RESEARCH IN DEVELOPMENTAL DISABILITIES 2023; 140:104569. [PMID: 37473626 DOI: 10.1016/j.ridd.2023.104569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 06/21/2023] [Accepted: 07/04/2023] [Indexed: 07/22/2023]
Abstract
BACKGROUND Despite its importance for learning, the existence of the habituation process and its characteristics in people with profound intellectual and multiple disabilities (PIMD) remains understudied. Habituation is, however, considered the simplest form of learning, and a significant neuroadaptive mechanism. Even though habituation occurs in all sensory modalities, the olfactory system is where it manifests itself very visibly. AIM This study explores the olfactory short-term habituation abilities of children and young people with PIMD. METHOD Twenty children and young people with PIMD (7-18 years) were presented six times successively with a 30-second habituating olfactory stimulus. The interstimulus interval was 15 s. A new odour was presented on the seventh trial. The scenario was carried out two times with two pairs of stimuli. The participants' head alignment duration on the odour was measured. RESULTS Seventeen participants out of 20 manifested a decline in response, which reached about 50 % between the first and sixth presentation of the habituation odour. All habituators also showed a distinctive response when exposed to a novel odour. The participants who did not habituate showed a strong, non-fluctuating response to the stimulus throughout the presentations. Three participants only habituated to one of the two habituation stimuli. CONCLUSION AND IMPLICATIONS The results raise theoretical, scientific, and practical issues. They question the factors explaining olfactory habituation mechanisms, namely the stimulus properties and the severity of impairment, reveal the need for points of comparison for interpreting this population's responses, and point to the consequences of stimuli repetition and or variety in therapeutic or educational settings for these individuals' learning and cognitive functioning.
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Affiliation(s)
- Geneviève Petitpierre
- Université de Fribourg, Département de Pédagogie spécialisée, R. St Pierre Canisius 21, Fribourg CH-1700, Switzerland.
| | - Juliane Dind
- Université de Fribourg, Département de Pédagogie spécialisée, R. St Pierre Canisius 21, Fribourg CH-1700, Switzerland
| | - Catherine De Blasio
- Université de Fribourg, Département de Pédagogie spécialisée, R. St Pierre Canisius 21, Fribourg CH-1700, Switzerland
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Gronowitz ME, Liu A, Qiu Q, Yu CR, Cleland TA. A physicochemical model of odor sampling. PLoS Comput Biol 2021; 17:e1009054. [PMID: 34115747 PMCID: PMC8221795 DOI: 10.1371/journal.pcbi.1009054] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 06/23/2021] [Accepted: 05/09/2021] [Indexed: 11/19/2022] Open
Abstract
We present a general physicochemical sampling model for olfaction, based on established pharmacological laws, in which arbitrary combinations of odorant ligands and receptors can be generated and their individual and collective effects on odor representations and olfactory performance measured. Individual odor ligands exhibit receptor-specific affinities and efficacies; that is, they may bind strongly or weakly to a given receptor, and can act as strong agonists, weak agonists, partial agonists, or antagonists. Ligands interacting with common receptors compete with one another for dwell time; these competitive interactions appropriately simulate the degeneracy that fundamentally defines the capacities and limitations of odorant sampling. The outcome of these competing ligand-receptor interactions yields a pattern of receptor activation levels, thereafter mapped to glomerular presynaptic activation levels based on the convergence of sensory neuron axons. The metric of greatest interest is the mean discrimination sensitivity, a measure of how effectively the olfactory system at this level is able to recognize a small change in the physicochemical quality of a stimulus. This model presents several significant outcomes, both expected and surprising. First, adding additional receptors reliably improves the system's discrimination sensitivity. Second, in contrast, adding additional ligands to an odorscene initially can improve discrimination sensitivity, but eventually will reduce it as the number of ligands increases. Third, the presence of antagonistic ligand-receptor interactions produced clear benefits for sensory system performance, generating higher absolute discrimination sensitivities and increasing the numbers of competing ligands that could be present before discrimination sensitivity began to be impaired. Finally, the model correctly reflects and explains the modest reduction in odor discrimination sensitivity exhibited by transgenic mice in which the specificity of glomerular targeting by primary olfactory neurons is partially disrupted.
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Affiliation(s)
- Mitchell E. Gronowitz
- Department of Psychology, Cornell University, Ithaca, New York, United States of America
| | - Adam Liu
- Department of Psychology, Cornell University, Ithaca, New York, United States of America
| | - Qiang Qiu
- Stowers Institute for Medical Research, Kansas City, Missouri, United States of America
| | - C. Ron Yu
- Stowers Institute for Medical Research, Kansas City, Missouri, United States of America
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Thomas A. Cleland
- Department of Psychology, Cornell University, Ithaca, New York, United States of America
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Noradrenergic Activity in the Olfactory Bulb Is a Key Element for the Stability of Olfactory Memory. J Neurosci 2020; 40:9260-9271. [PMID: 33097638 DOI: 10.1523/jneurosci.1769-20.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/04/2020] [Accepted: 10/13/2020] [Indexed: 02/07/2023] Open
Abstract
Memory stability is essential for animal survival when environment and behavioral state change over short or long time spans. The stability of a memory can be expressed by its duration, its perseverance when conditions change as well as its specificity to the learned stimulus. Using optogenetic and pharmacological manipulations in male mice, we show that the presence of noradrenaline in the olfactory bulb during acquisition renders olfactory memories more stable. We show that while inhibition of noradrenaline transmission during an odor-reward acquisition has no acute effects, it alters perseverance, duration, and specificity of the memory. We use a computational approach to propose a proof of concept model showing that a single, simple network effect of noradrenaline on olfactory bulb dynamics can underlie these seemingly different behavioral effects. Our results show that acute changes in network dynamics can have long-term effects that extend beyond the network that was manipulated.SIGNIFICANCE STATEMENT Olfaction guides the behavior of animals. For successful survival, animals have to remember previously learned information and at the same time be able to acquire new memories. We show here that noradrenaline in the olfactory bulb, the first cortical relay of the olfactory information, is important for creating stable and specific olfactory memories. Memory stability, as expressed in perseverance, duration and specificity of the memory, is enhanced when noradrenergic inputs to the olfactory bulb are unaltered. We show that, computationally, our diverse behavioral results can be ascribed to noradrenaline-driven changes in neural dynamics. These results shed light on how very temporary changes in neuromodulation can have a variety of long-lasting effects on neural processing and behavior.
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Noradrenergic effects on olfactory perception and learning. Brain Res 2018; 1709:33-38. [PMID: 29574010 DOI: 10.1016/j.brainres.2018.03.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 01/17/2018] [Accepted: 03/15/2018] [Indexed: 01/03/2023]
Abstract
We here review modulation of olfactory guided behavioral tasks by noradrenaline. In this review we focus on modulation of the main olfactory system in adult rodents. We detail behavioral paradigms commonly used and discuss how sensory perception and learning can be measured using these paradigms. We then describe neuromodulatory effects on several aspects of olfactory processing, including detection and encoding. We describe how memory duration, specificity and duration are affected by noradrenergic modulation.
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Frie J, Bartocci M, Lagercrantz H, Kuhn P. Cortical Responses to Alien Odors in Newborns: An fNIRS Study. Cereb Cortex 2017; 28:3229-3240. [DOI: 10.1093/cercor/bhx194] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 07/13/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jakob Frie
- Neonatal Research Unit, Department of Women’s and Children’s Health, Karolinska Institute, Stockholm, Sweden
- Department of Neonatal Medicine, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Marco Bartocci
- Neonatal Research Unit, Department of Women’s and Children’s Health, Karolinska Institute, Stockholm, Sweden
- Department of Neonatal Medicine, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Hugo Lagercrantz
- Neonatal Research Unit, Department of Women’s and Children’s Health, Karolinska Institute, Stockholm, Sweden
| | - Pierre Kuhn
- Neonatal Research Unit, Department of Women’s and Children’s Health, Karolinska Institute, Stockholm, Sweden
- Service de Médecine et Réanimation du Nouveau-né, Hôpital de Hautepierre, Centre Hospitalier Universitaire de Strasbourg, France
- Institut de Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique et Unistra, Strasbourg, France
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Coronas-Samano G, Baker KL, Tan WJT, Ivanova AV, Verhagen JV. Fus1 KO Mouse As a Model of Oxidative Stress-Mediated Sporadic Alzheimer's Disease: Circadian Disruption and Long-Term Spatial and Olfactory Memory Impairments. Front Aging Neurosci 2016; 8:268. [PMID: 27895577 PMCID: PMC5108791 DOI: 10.3389/fnagi.2016.00268] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 10/24/2016] [Indexed: 12/13/2022] Open
Abstract
Insufficient advances in the development of effective therapeutic treatments of sporadic Alzheimer's Disease (sAD) to date are largely due to the lack of sAD-relevant animal models. While the vast majority of models do recapitulate AD's hallmarks of plaques and tangles by virtue of tau and/or beta amyloid overexpression, these models do not reflect the fact that in sAD (unlike familial AD) these genes are not risk factors per se and that other mechanisms like oxidative stress, metabolic dysregulation and inflammation play key roles in AD etiology. Here we characterize and propose the Fus1 KO mice that lack a mitochondrial protein Fus1/Tusc2 as a new sAD model. To establish sAD relevance, we assessed sAD related deficits in Fus1 KO and WT adult mice of 4-5 months old, the equivalent human age when the earliest cognitive and olfactory sAD symptoms arise. Fus1 KO mice showed oxidative stress (increased levels of ROS, decreased levels of PRDX1), disruption of metabolic homeostasis (decreased levels of ACC2, increased phosphorylation of AMPK), autophagy (decreased levels of LC3-II), PKC (decreased levels of RACK1) and calcium signaling (decreased levels of Calb2) in the olfactory bulb and/or hippocampus. Mice were behaviorally tested using objective and accurate video tracking (Noldus), in which Fus1 KO mice showed clear deficits in olfactory memory (decreased habituation/cross-habituation in the short and long term), olfactory guided navigation memory (inability to reduce their latency to find the hidden cookie), spatial memory (learning impairments on finding the platform in the Morris water maze) and showed more sleep time during the diurnal cycle. Fus1 KO mice did not show clear deficits in olfactory perception (cross-habituation), association memory (passive avoidance) or in species-typical behavior (nest building) and no increased anxiety (open field, light-dark box) or depression/anhedonia (sucrose preference) at this relatively young age. These neurobehavioral deficits of the Fus1 KO mice at this relatively young age are highly relevant to sAD, making them suitable for effective research on pharmacological targets in the context of early intervention of sAD.
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Affiliation(s)
| | - Keeley L Baker
- The John B. Pierce LaboratoryNew Haven, CT, USA; Department of Neuroscience, Yale University School of MedicineNew Haven, CT, USA
| | - Winston J T Tan
- Department of Surgery, Yale University School of Medicine New Haven, CT, USA
| | - Alla V Ivanova
- Department of Surgery, Yale University School of Medicine New Haven, CT, USA
| | - Justus V Verhagen
- The John B. Pierce LaboratoryNew Haven, CT, USA; Department of Neuroscience, Yale University School of MedicineNew Haven, CT, USA
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Effects of experimentally necessary changes in husbandry on olfactory memory: Chronic food restriction and social isolation. Physiol Behav 2016; 155:38-45. [DOI: 10.1016/j.physbeh.2015.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 11/16/2015] [Accepted: 12/02/2015] [Indexed: 01/25/2023]
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Hackett C, Choi C, O'Brien B, Shin P, Linster C. Odor Memory and Discrimination Covary as a Function of Delay between Encoding and Recall in Rats. Chem Senses 2015; 40:315-23. [PMID: 25899806 DOI: 10.1093/chemse/bjv013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Nonassociative odor learning paradigms are often used to assess memory, social recognition and neuromodulation of olfactory pathways. We here use a modified object recognition paradigm to investigate how an important task parameter, delay between encoding and recall trials, affects the properties of this memory. We show that both memory for a previously investigated odorant and discrimination of a novel odorant decay with delay time and that rats can remember an odorant for up to 45min after a single trial encoding event. The number of odorants that can be encoded, as well as the specificity of the encoded memory, decrease with increased delay and also depend on stimulus concentration. Memory for an odorant and discrimination of a novel odorant decay at approximately the same rate, whereas the specificity of the formed memory decays faster than the memory itself. These results have important implications for the interpretation of behavioral data obtained with this paradigm.
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Affiliation(s)
- Chelsea Hackett
- Computational Physiology Lab, Department of Neurobiology and Behavior, Cornell University, W249 Seeley G. Mudd Hall, Ithaca, NY 14853, USA
| | - Christina Choi
- Computational Physiology Lab, Department of Neurobiology and Behavior, Cornell University, W249 Seeley G. Mudd Hall, Ithaca, NY 14853, USA
| | - Brenna O'Brien
- Computational Physiology Lab, Department of Neurobiology and Behavior, Cornell University, W249 Seeley G. Mudd Hall, Ithaca, NY 14853, USA
| | - Philip Shin
- Computational Physiology Lab, Department of Neurobiology and Behavior, Cornell University, W249 Seeley G. Mudd Hall, Ithaca, NY 14853, USA
| | - Christiane Linster
- Computational Physiology Lab, Department of Neurobiology and Behavior, Cornell University, W249 Seeley G. Mudd Hall, Ithaca, NY 14853, USA
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Flohr ELR, Boesveldt S, Haehner A, Iannilli E, Sinding C, Hummel T. Time-course of trigeminal versus olfactory stimulation: evidence from chemosensory evoked potentials. Int J Psychophysiol 2015; 95:388-94. [PMID: 25697131 DOI: 10.1016/j.ijpsycho.2015.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 12/19/2014] [Accepted: 01/26/2015] [Indexed: 10/24/2022]
Abstract
Habituation of responses to chemosensory signals has been explored in many ways. Strong habituation and adaptation processes can be observed at the various levels of processing. For example, with repeated exposure, amplitudes of chemosensory event-related potentials (ERP) decrease over time. However, long-term habituation has not been investigated so far and investigations of differences in habituation between trigeminal and olfactory ERPs are very rare. The present study investigated habituation over a period of approximately 80 min for two olfactory and one trigeminal stimulus, respectively. Habituation was examined analyzing the N1 and P2 amplitudes and latencies of chemosensory ERPs and intensity ratings. It was shown that amplitudes of both components - and intensity ratings - decreased from the first to the last block. Concerning ERP latencies no effects of habituation were seen. Amplitudes of trigeminal ERPs diminished faster than amplitudes of olfactory ERPs, indicating that the habituation of trigeminal ERPs is stronger than habituation of olfactory ERPs. Amplitudes of trigeminal ERPs were generally higher than amplitudes of olfactory ERPs, as it has been shown in various studies before. The results reflect relatively selective central changes in response to chemosensory stimuli over time.
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Affiliation(s)
- Elena L R Flohr
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Germany; Department of Psychology (Biological Psychology, Clinical Psychology, and Psychotherapy), University of Würzburg, Germany.
| | - Sanne Boesveldt
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Germany; Division of Human Nutrition, Wageningen University, Wageningen, the Netherlands; Department of Neurology, VU University Medical Center, Amsterdam, the Netherlands
| | - Antje Haehner
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Germany
| | - Emilia Iannilli
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Germany
| | - Charlotte Sinding
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Germany
| | - Thomas Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Germany
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Tong MT, Peace ST, Cleland TA. Properties and mechanisms of olfactory learning and memory. Front Behav Neurosci 2014; 8:238. [PMID: 25071492 PMCID: PMC4083347 DOI: 10.3389/fnbeh.2014.00238] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 06/16/2014] [Indexed: 02/05/2023] Open
Abstract
Memories are dynamic physical phenomena with psychometric forms as well as characteristic timescales. Most of our understanding of the cellular mechanisms underlying the neurophysiology of memory, however, derives from one-trial learning paradigms that, while powerful, do not fully embody the gradual, representational, and statistical aspects of cumulative learning. The early olfactory system—particularly olfactory bulb—comprises a reasonably well-understood and experimentally accessible neuronal network with intrinsic plasticity that underlies both one-trial (adult aversive, neonatal) and cumulative (adult appetitive) odor learning. These olfactory circuits employ many of the same molecular and structural mechanisms of memory as, for example, hippocampal circuits following inhibitory avoidance conditioning, but the temporal sequences of post-conditioning molecular events are likely to differ owing to the need to incorporate new information from ongoing learning events into the evolving memory trace. Moreover, the shapes of acquired odor representations, and their gradual transformation over the course of cumulative learning, also can be directly measured, adding an additional representational dimension to the traditional metrics of memory strength and persistence. In this review, we describe some established molecular and structural mechanisms of memory with a focus on the timecourses of post-conditioning molecular processes. We describe the properties of odor learning intrinsic to the olfactory bulb and review the utility of the olfactory system of adult rodents as a memory system in which to study the cellular mechanisms of cumulative learning.
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Affiliation(s)
- Michelle T Tong
- Computational Physiology Lab, Department of Psychology, Cornell University Ithaca, NY, USA
| | - Shane T Peace
- Computational Physiology Lab, Department of Neurobiology and Behavior, Cornell University Ithaca, NY, USA
| | - Thomas A Cleland
- Computational Physiology Lab, Department of Psychology, Cornell University Ithaca, NY, USA
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Manella LC, Alperin S, Linster C. Stressors impair odor recognition memory via an olfactory bulb-dependent noradrenergic mechanism. Front Integr Neurosci 2013; 7:97. [PMID: 24391558 PMCID: PMC3870319 DOI: 10.3389/fnint.2013.00097] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 12/05/2013] [Indexed: 12/28/2022] Open
Abstract
Non-associative habituation and odor recognition tasks have been widely used to probe questions of social recognition, odor memory duration, and odor memory specificity. Among others, these paradigms have provided valuable insight into how neuromodulation, and specifically norepinephrine/noradrenaline (NE) influences odor memory. In general, NE levels are modulated by arousal, stress, and behavioral state, but there is sparse evidence of a direct relationship between NE and odor memory in adult rodents. The present study uses simple mild psychological stressors (bright light and sound) to modulate NE levels physiologically in order to probe stressors NE-dependent effect on odor recognition memory. In rats with bilateral bulbar cannulations, we show that these stressors modulate olfactory memory and that this effect is at least partially mediated by the olfactory bulb. Specifically, we show that the presence of stressors during the acquisition of odor memory suppresses memory for an odor when tested 30 min after familiarization to that odor. This suppression is blocked by infusing NE antagonists into the olfactory bulb prior to odor acquisition. Additionally, we find that infusion of bulbar NE is sufficient to suppress odor memory in a manner mimicking that of our stressors. These effects are unlikely to be solely mediated by locomotor/exploratory changes produced by stressors, although these stressors influence certain behaviors not directly related to odor investigation. This study provides important information about how behaviorally relevant changes in NE can influence top-down sensory processing and odor memory.
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Affiliation(s)
- Laura C Manella
- Department of Neurobiology and Behavior, Cornell University Ithaca, NY, USA
| | - Samuel Alperin
- Department of Neurobiology and Behavior, Cornell University Ithaca, NY, USA
| | - Christiane Linster
- Department of Neurobiology and Behavior, Cornell University Ithaca, NY, USA
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