Stress Effects on Multiple Memory System Interactions

Ness, Deborah; Calabrese, Pasquale

doi:10.1155/2016/4932128

Cited by 22 publications

(21 citation statements)

References 83 publications

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“…Interestingly, noradrenalin and adrenalin modulate taste and olfaction, play a role in cardiovascular regulation and affect memory formation in mammals as well ( Herness et al, 2002 ; Doucette et al, 2007 ; Roozendaal et al, 2008 ; Verberne et al, 2014 ; Tank and Lee Wong, 2015 ; Ness and Calabrese, 2016 ; Doyle and Meeks, 2017 ). Given that OA is a functional homolog of noradrenalin and adrenalin in regulating hunger-stress our results support the notion that OA has similar functions as these two catecholamines in triggering the animal’s physiological and behavioral stress–responses ( Corbet, 1991 ; Roeder, 2005 ; Even et al, 2012 ).…”

Section: Discussionmentioning

confidence: 99%

Octopamine Underlies the Counter-Regulatory Response to a Glucose Deficit in Honeybees (Apis mellifera)

Buckemüller

Siehler

Göbel

et al. 2017

Front. Syst. Neurosci.

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An animal’s internal state is a critical parameter required for adaptation to a given environment. An important aspect of an animal’s internal state is the energy state that is adjusted to the needs of an animal by energy homeostasis. Glucose is one essential source of energy, especially for the brain. A shortage of glucose therefore triggers a complex response to restore the animal’s glucose supply. This counter-regulatory response to a glucose deficit includes metabolic responses like the mobilization of glucose from internal glucose stores and behavioral responses like increased foraging and a rapid intake of food. In mammals, the catecholamines adrenalin and noradrenalin take part in mediating these counter-regulatory responses to a glucose deficit. One candidate molecule that might play a role in these processes in insects is octopamine (OA). It is an invertebrate biogenic amine and has been suggested to derive from an ancestral pathway shared with adrenalin and noradrenalin. Thus, it could be hypothesized that OA plays a role in the insect’s counter-regulatory response to a glucose deficit. Here we tested this hypothesis in the honeybee (Apis mellifera), an insect that, as an adult, mainly feeds on carbohydrates and uses these as its main source of energy. We investigated alterations of the hemolymph glucose concentration, survival, and feeding behavior after starvation and examined the impact of OA on these processes in pharmacological experiments. We demonstrate an involvement of OA in these three processes in honeybees and conclude there is an involvement of OA in regulating a bee’s metabolic, physiological, and behavioral response following a phase of prolonged glucose deficit. Thus, OA in honeybees acts similarly to adrenalin and noradrenalin in mammals in regulating an animal’s counter-regulatory response.

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Section: Discussionmentioning

confidence: 99%

Octopamine Underlies the Counter-Regulatory Response to a Glucose Deficit in Honeybees (Apis mellifera)

Buckemüller

Siehler

Göbel

et al. 2017

Front. Syst. Neurosci.

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“…Interactions among memory systems can take however more complicated forms and our current understanding of these processes remains poor (Kim & Baxter, 2001). This problem has been addressed a number of times in the literature (Poldrack & Packard, 2003; Poldrack & Rodriguez, 2004; Gruber & McDonald, 2012; McDonald & Hong, 2013; White et al, 2013; Ness & Calabrese, 2016), but we currently lack a comprehensive view of this process. Tolman mentioned brain damage, the constellation of cues in the environment, extent of training, and motivational/affective factors (Tolman, 1948); all these hypotheses were validated by later empirical work.…”

Section: Introductionmentioning

confidence: 99%

Memory systems 2018 – Towards a new paradigm

Ferbinteanu

2019

Neurobiology of Learning and Memory

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The multiple memory systems theory (MMS) postulates that the brain stores information based on the independent and parallel activity of a number of modules, each with distinct properties, dynamics, and neural basis. Much of the evidence for this theory comes from dissociation studies indicating that damage to restricted brain areas cause selective types of memory deficits. MMS has been the prevalent paradigm in memory research for more than thirty years, even as it has been adjusted several times to accommodate new data. However, recent empirical results indicating that the memory systems are not always dissociable constitute a challenge to fundamental tenets of the current theory because they suggest that representations formed by individual memory systems can contribute to more than one type of memory-driven behavioral strategy. This problem can be addressed by applying a dynamic network perspective to memory architecture. According to this view, memory networks can reconfigure or transiently couple in response to environmental demands. Within this context, the neural network underlying a specific memory system can act as an independent unit or as an integrated component of a higher order meta-network. This dynamic network model proposes a way in which empirical evidence that challenges the idea of distinct memory systems can be incorporated within a modular memory architecture. The model also provides a framework to account for the complex interactions among memory systems demonstrated at the behavioral level. Advances in the study of dynamic networks can generate new ideas to experimentally manipulate and control memory in basic or clinical research.

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“…The association between stress hormones and altered memory processes [6][7][8] may explain this finding. As reported by the survey participants, major disruptions or 'life events' can be stressful.…”

Section: Findings and Interpretation And Similarities And Differencementioning

confidence: 89%

“…As reported by the survey participants, major disruptions or 'life events' can be stressful. Stressful situations give rise to increased levels of stress hormones including cortisol [6] which act on the brain and may interfere with memory consolidation and the formation of long-term memories [6][7][8]. The type and timing of stress determines how the memory process is affected [20].…”

Section: Findings and Interpretation And Similarities And Differencementioning

confidence: 99%

“…Not only does stress have an impact on work and study, it can also affect memory. Stress hormones are associated with altered memory processes [6][7][8] and could therefore affect everyday memory and the ability to complete everyday tasks. For millennial women, stressalongside typically busy lifestylesmay have an impact on daily activities, with potentially far-reaching consequences such as remembering to take a daily oral contraceptive pill.…”

Section: Introductionmentioning

confidence: 99%

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Millennials and contraception: why do they forget? An international survey exploring the impact of lifestyles and stress levels on adherence to a daily contraceptive regimen

Caetano

Peers

Papadopoulos

et al. 2019

The European Journal of Contraception & Reproductive Health

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Background: Rates of unintended pregnancies are particularly high in young women, a finding that may be associated with their tendency not to use contraceptives correctly and/or consistently. For millennial women, busy lifestyles and associated stress may impact on daily activities including taking an oral contraceptive pill. Methods: Contraceptive pill users aged 21-29 years ('millennial' women; N ¼ 4500) from nine countries in Europe and North and South America completed an online questionnaire on their daily habits and activities, disruptions to their routine and associated stress levels. Results: Thirty-nine percent of surveyed participants had forgotten to take their contraceptive pill at least once in the past month; 39% also admitted not taking it at the same time each day. On average, participants had experienced two major disruptions to their daily lives in the past year, with three quarters (74%) believing these disruptions increased their stress levels. Of those who had missed at least one pill in the past year, 40% attributed it to a busy schedule and 21% to stress, among other reasons. Over half of respondents (55%) reported they were more likely to forget their pill when preoccupied. Conclusions: Times of stress may make it more likely for millennial women to forget to take their pill. Health care providers should be aware of typical contraceptive adherence rates among young women and ensure that contraceptive counselling sessions include discussion of lifestyle issues and potential barriers to adherence. Every woman should be counselled on all available methods, so that she can make an informed choice on what best suits her. ARTICLE HISTORY

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Stress Effects on Multiple Memory System Interactions

Cited by 22 publications

References 83 publications

Octopamine Underlies the Counter-Regulatory Response to a Glucose Deficit in Honeybees (Apis mellifera)

Octopamine Underlies the Counter-Regulatory Response to a Glucose Deficit in Honeybees (Apis mellifera)

Memory systems 2018 – Towards a new paradigm

Millennials and contraception: why do they forget? An international survey exploring the impact of lifestyles and stress levels on adherence to a daily contraceptive regimen

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