Winter is coming: Seasonality and the acoustic startle reflex

Armbruster, Diana; Brocke, Burkhard; Strobel, Alexander

doi:10.1016/j.physbeh.2016.11.038

Cited by 6 publications

(4 citation statements)

References 47 publications

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“…107 Indeed, it is known that the population experiences a worsening of their mood and stronger depressive symptoms (seasonal affective disorder) in winter. [108][109][110] This is also visible in the highly significant seasonal variation in cortisol levels in winter and autumn compared to spring and summer. 111 Thus it is reasonable that we found a significant influence of the seasons on FCOA.…”

Section: Environment and Certain Situational Variablementioning

confidence: 95%

Frontal cerebral oxygenation asymmetry: intersubject variability and dependence on systemic physiology, season, and time of day

2020

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Significance: Our study reveals that frontal cerebral oxygenation asymmetry (FCOA), i.e. a difference in the oxygenation between the right and left prefrontal cortex (PFC), is a real phenomenon in healthy human subjects at rest. Aim: To investigate FCOA, we performed a study with 134 healthy right-handed subjects with the systemic physiology augmented functional near infrared spectroscopy (SPA-fNIRS) approach. Approach: Subjects were measured 2 to 4 times on different days resulting in an unprecedented number of 518 single measurements of the absolute values of tissue oxygen saturation (StO 2) and total hemoglobin concentration ([tHb]) of the right and left PFC. Measurements were performed with frequency-domain functional near-infrared spectroscopy. In addition, the cardiorespiratory parameters were measured simultaneously. Results: We found that (i) subjects showed an FCOA (higher StO 2 on the right PFC), but not for tHb; (ii) intrasubject variability was excellent for both StO 2 and tHb, and fair for FCOA; (iii) StO 2 correlated significantly with blood CO 2 concentration, [tHb] with heart rate, respiration rate (RR), and the pulse-respiration quotient (PRQ), and FCOA with RR and PRQ; (iv) FCOA and StO 2 were dependent on season and time of day, respectively; (v) FCOA was negatively correlated with the room temperature; and (vi) StO 2 and tHb were not correlated with the subjects mood but with their chronotype, whereas FCOA was not dependent on the chronotype. Conclusion: Our study demonstrates that FCOA is real, and it provides unique insights into this remarkable phenomenon.

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Section: Environment and Certain Situational Variablementioning

confidence: 95%

Frontal cerebral oxygenation asymmetry: intersubject variability and dependence on systemic physiology, season, and time of day

2020

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“…Women are more prone to af fec tive dis or ders, with females be ing af fected 2-40 times more of ten than males with SAD [56]. The high est pro por tion of pa tients with SAD are premenopausal women [57]. More over, SAD symp toms fre quently co-oc cur with premenstrual symptoms [56].…”

Section: Other Hormonal Imbalancesmentioning

confidence: 99%

“…This sug gests that go nadal ste roids might in fluence SAD symp toms. There is data that de pres sive symptoms were pos i tively as so ci ated with net de creases in estradiol lev els [57], the low est in Oc to ber [58], el e vated con cen tra tions of fol li cle-stim u lat ing hor mone, and luteinizing hor mone [59].…”

Section: Other Hormonal Imbalancesmentioning

confidence: 99%

Risk factors and treatment approaches to seasonal affective disorder: a review

Jurgaitytė¹,

Dijokas²,

Rimkevičiūtė³

et al. 2020

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Sezoninė depresija – depresijos tipas, kuriam būdingas sezoninis simptomų pasireiškimas žiemą arba vasarą. Jos požymiai paprastai pasireiškia 1-2 % bendros populiacijos, tačiau daugiau nei 30 laipsnių nuo pusiaujo nutolusiuose regionuose šis rodiklis siekia net 10-20 %. Kartais išskiriamas ir subsindrominis sezoninės depresijos tipas, kuris pasižymi to paties pobūdžio, tik lengvesniais sezoninio afektinio sutrikimo simptomais. Sezoninės depresijos atsiradimui įtakos turi ne tik aplinkos rizikos faktoriai, pavyzdžiui, dienos trukmė ar laikas, praleistas saulės šviesoje, bet ir genetiniai veiksniai bei neurocheminiai pokyčiai smegenyse – šiam sutrikimui būdinga heterogeniška rizikos veiksnių visuma. Cirkadinių ritmų sutrikimai ir neurotransmiterių, pavyzdžiui, serotonino, dopamino ar noradrenalino, disreguliacija yra vieni iš pagrindinių veiksnių, sukeliančių sezoninio afektinio sutrikimo simptomus. Simptomų remisijai įtakos turi ryškios šviesos terapija, taikoma reguliuojant pacientų cirkadinius ritmus, ir kognityvinė elgesio terapija, kuri netiesiogiai palengvina depresijos simptomus (pacientai mokomi valdyti stresą ir nerimą). Šiame straipsnyje palyginama sezoninės depresijos gydymo metodų veiksmingumas ir saugumas.

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“…Then, (k) alcohol consumption rate was evaluated in winter and summer (Morales‐Muñoz et al, 2018). Moreover, female participants were asked several questions to assess any (l) changes in their menstrual cycle during different seasons (Armbruster et al, 2017; Lorenz et al, 2017). In addition, to cover all aspects of the study participant's life: (m) socio‐demographic factors (including age, gender, marital status, education, employment, and income) were taken into account (LoBello & Mehta, 2019).…”

Section: Introductionmentioning

confidence: 99%