scholarly journals Revision: Externalizing behavior in healthy young adults is associated with lower cortisol responses to acute stress and altered neural activation in the dorsal striatum

2021 ◽  
Author(s):  
Julian Konzok ◽  
Gina‐Isabelle Henze ◽  
Hannah Peter ◽  
Marina Giglberger ◽  
Christoph Bärtl ◽  
...  
Keyword(s):  
Young Adults ◽  
Externalizing Behavior ◽  
Acute Stress ◽  
Dorsal Striatum ◽  
Neural Activation ◽  
Cortisol Responses

scholarly journals Striatal and Pallidal Activation during Reward Modulated Movement Using a Translational Paradigm

2015 ◽  
Vol 21 (6) ◽  
pp. 399-411 ◽  
Author(s):  
Amanda Bischoff-Grethe ◽  
Richard B. Buxton ◽  
Martin P. Paulus ◽  
Adam S. Fleisher ◽  
Tony T. Yang ◽  
...  
Keyword(s):  
Visual Cues ◽  
Animal Studies ◽  
Target Location ◽  
Functional Neuroimaging ◽  
Dorsal Striatum ◽  
Imaging Study ◽  
Reward Processing ◽  
Neural Activation ◽  
Internal Globus Pallidus ◽  
Target Capture

AbstractHuman neuroimaging studies of reward processing typically involve tasks that engage decision-making processes in the dorsal striatum or focus upon the ventral striatum’s response to feedback expectancy. These studies are often compared to the animal literature; however, some animal studies include both feedback and nonfeedback events that activate the dorsal striatum during feedback expectancy. Differences in task parameters, movement complexity, and motoric effort to attain rewards may partly explain ventral and dorsal striatal response differences across species. We, therefore, used a target capture task during functional neuroimaging that was inspired by a study of single cell modulation in the internal globus pallidus during reward-cued, rotational arm movements in nonhuman primates. In this functional magnetic resonance imaging study, participants used a fiberoptic joystick to make a rotational response to an instruction stimulus that indicated both a target location for a capture movement and whether or not the trial would end with feedback indicating either a small financial gain or a neutral outcome. Portions of the dorsal striatum and pallidum demonstrated greater neural activation to visual cues predicting potential gains relative to cues with no associated outcome. Furthermore, both striatal and pallidal regions displayed a greater response to financial gains relative to neutral outcomes. This reward-dependent modulation of dorsal striatal and pallidal activation in a target-capture task is consistent with findings from reward studies in animals, supporting the use of motorically complex tasks as translational paradigms to investigate the neural substrates of reward expectancy and outcome in humans. (JINS, 2015, 21, 399–411)

scholarly journals Effects of Open-Label Placebos on State Anxiety and Glucocorticoid Stress Responses

2021 ◽  
Vol 11 (4) ◽  
pp. 508
Author(s):  
Michael Schaefer ◽  
Julian Hellmann-Regen ◽  
Sören Enge
Keyword(s):  
Stress Responses ◽  
Acute Stress ◽  
Stress Test ◽  
Self Report ◽  
Control Group ◽  
Relaxation Techniques ◽  
Open Label ◽  
Before And After ◽  
Cortisol Responses ◽  
Negative Feelings

Stress belongs to the most frequent negative feelings people are confronted with in daily life. Strategies against acute stress include, e.g., relaxation techniques or medications, but it is also known that placebos can successfully reduce negative emotional stress. While it is widely held that placebos require deception to provoke a response, recent studies demonstrate intriguing evidence that placebos may work even without concealment (e.g., against anxiety or pain). Most of these studies are based on self-report questionnaires and do not include physiological measures. Here we report results of a study examining whether placebos without deception reduce acute stress. A total of 53 healthy individuals received either placebos without deception or no pills before participating in a laboratory stress test (Maastricht Acute Stress Test, MAST). We recorded self-report stress measures and cortisol responses before and after the MAST. Results showed no significant differences between the placebo and the control group, but when comparing participants with high relative to low beliefs in the power of placebos we found significant lower anxiety and cortisol responses for the placebo believers. These results show that non-deceptive placebos may successfully reduce acute anxiety and stress, but only in participants who had a strong belief in placebos. We discuss the results by suggesting that open-label placebos might be a possible treatment to reduce stress at least for some individuals.

scholarly journals Neural activation of swallowing and swallowing-related tasks in healthy young adults: An attempt to separate the components of deglutition

2009 ◽  
Vol 30 (10) ◽  
pp. 3209-3226 ◽  
Author(s):  
Georgia A. Malandraki ◽  
Bradley P. Sutton ◽  
Adrienne L. Perlman ◽  
Dimitrios C. Karampinos ◽  
Charles Conway
Keyword(s):  
Young Adults ◽  
Neural Activation

scholarly journals Recent Perceived Stress, Amygdala Reactivity to Acute Psychosocial Stress, and Alcohol and Cannabis Use in Adolescents and Young Adults With Bipolar Disorder

2021 ◽  
Vol 12 ◽  
Author(s):  
Vanessa Le ◽  
Dylan E. Kirsch ◽  
Valeria Tretyak ◽  
Wade Weber ◽  
Stephen M. Strakowski ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Substance Use ◽  
Young Adults ◽  
Perceived Stress ◽  
Psychosocial Stress ◽  
Acute Stress ◽  
Cannabis Use ◽  
Typically Developing ◽  
Amygdala Activation ◽  
Amygdala Reactivity

Background: Psychosocial stress negatively affects the clinical course of bipolar disorder. Studies primarily focused on adults with bipolar disorder suggest the impact of stress is progressive, i.e., stress response sensitizes with age. Neural mechanisms underlying stress sensitization are unknown. As stress-related mechanisms contribute to alcohol/substance use disorders, variation in stress response in youth with bipolar disorder may contribute to development of co-occurring alcohol/substance use disorders. This study investigated relations between psychosocial stress, amygdala reactivity, and alcohol and cannabis use in youth with bipolar disorder, compared to typically developing youth.Methods: Forty-two adolescents/young adults [19 with bipolar disorder, 23 typically developing, 71% female, agemean ± SD = 21 ± 2 years] completed the Perceived Stress Scale (PSS), Daily Drinking Questionnaire modified for heaviest drinking week, and a modified Montreal Imaging Stress functional MRI Task. Amygdala activation was measured for both the control and stress conditions. Main effects of group, condition, total PSS, and their interactions on amygdala activation were modeled. Relationships between amygdala response to acute stress with recent alcohol/cannabis use were investigated.Results: Greater perceived stress related to increased right amygdala activation in response to the stress, compared to control, condition in bipolar disorder, but not in typically developing youth (group × condition × PSS interaction, p = 0.02). Greater amygdala reactivity to acute stress correlated with greater quantity and frequency of alcohol use and frequency of cannabis use in bipolar disorder.Conclusion: Recent perceived stress is associated with changes in amygdala activation during acute stress with amygdala reactivity related to alcohol/cannabis use in youth with bipolar disorder.

Acute exercise, memory, and neural activation in young adults

2020 ◽  
Vol 158 ◽  
pp. 299-309
Author(s):  
Alexis B. Slutsky-Ganesh ◽  
Jennifer L. Etnier ◽  
Jeffrey D. Labban
Keyword(s):  
Young Adults ◽  
Acute Exercise ◽  
Neural Activation

scholarly journals Variation in serotonin neurotransmission genes affects neural activation during response inhibition in adolescents and young adults with ADHD and healthy controls

2015 ◽  
Vol 16 (8) ◽  
pp. 625-634 ◽  
Author(s):  
Daan van Rooij ◽  
Catharina A. Hartman ◽  
Marjolein M.J. van Donkelaar ◽  
Janita Bralten ◽  
Daniel von Rhein ◽  
...  
Keyword(s):  
Young Adults ◽  
Response Inhibition ◽  
Adolescents And Young Adults ◽  
Neural Activation ◽  
Healthy Controls
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