Journal: Psychophysiology

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Wiley-Blackwell

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1469-8986
0048-5772

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Publications 1 - 8 of 8
  • Prolactin, dopamine and neuronal circuits in sexual drive and function: Peripheral and central mechanisms
    Item type: Other Conference Item
    Krüger, Tillman H.C.; Hartmann, Uwe; Schedlowski, Manfred (2004)
    Psychophysiology
  • Measuring the dynamics of individual emotions under online interaction through subjective and physiological responses
    Item type: Other Conference Item
    Garcia, David; Kappas, Arvid; Kuester, Dennis; et al. (2012)
    Psychophysiology
  • Frontal cortical effects on feedback processing and reinforcement learning: Relation of EEG asymmetry with the feedback-related negativity and behavior
    Item type: Journal Article
    Schmid, Petra; Hackel, Leor; Jasperse, Lee; et al. (2018)
    Psychophysiology
  • Psychological power alters cognitive efficiency
    Item type: Journal Article
    Lin, Enru; Freydefont, Laure; Schmid, Petra (2021)
    Psychophysiology
    Power is known to promote cognitive processing in a goal‐directed way. However, it is unknown whether powerful individuals invest more resources when pursuing their goals or whether they invest their resources more efficiently. We examined how experiencing high versus low power affects the efficient investment of cognitive resources using electroencephalography (EEG). Specifically, event‐related desynchronization (ERD) in the upper alpha band (10.5–12.75 Hz) was used to quantify the use of cognitive resources during task completion. Results showed that high‐power participants used fewer neural resources compared to low‐power participants across the whole brain but task performance did not differ between groups. These findings demonstrate that, instead of investing more resources, high‐power participants performed the task with greater cognitive efficiency compared to low‐power participants. Performing tasks efficiently could help powerholders deal with their demanding jobs and responsibilities. © 2021 Society for Psychophysiological Research.
  • Anticipatory cognitive stress appraisal modulates suppression of wound-induced macrophage activation by acute psychosocial stress
    Item type: Journal Article
    Kuebler, Ulrike; Wirtz, Petra H.; Sakai, Miho; et al. (2015)
    Psychophysiology
  • Association of Autonomic Activation with traumatic reminder challenges in posttraumatic stress disorder: A co-twin control study
    Item type: Journal Article
    Perez Alday, Erick A.; Da Poian, Giulia; Levantsevych, Oleksiy; et al. (2023)
    Psychophysiology
    Post-traumatic stress disorder (PTSD) has been associated with cardiovascular disease (CVD), but the mechanisms remain unclear. Autonomic dysfunction, associated with higher CVD risk, may be triggered by acute PTSD symptoms. We hypothesized that a laboratory-based trauma reminder challenge, which induces acute PTSD symptoms, provokes autonomic dysfunction in a cohort of veteran twins. We investigated PTSD-associated real-time physiologic changes with a simulation of traumatic experiences in which the twins listened to audio recordings of a one-minute neutral script followed by a one-minute trauma script. We examined two heart rate variability metrics: deceleration capacity (DC) and logarithmic low frequency (log-LF) power from beat-to-beat intervals extracted from ambulatory electrocardiograms. We assessed longitudinal PTSD status with a structured clinical interview and the severity with the PTSD Symptoms Scale. We used linear mixed-effects models to examine twin dyads and account for cardiovascular and behavioral risk factors. We examined 238 male Veteran twins (age 68 +/- 3 years old, 4% black). PTSD status and acute PTSD symptom severity were not associated with DC or log-LF measured during the neutral session, but were significantly associated with lower DC and log-LF during the traumatic script listening session. Long-standing PTSD was associated with a 0.38 (95% confidence interval, -0.83,-0.08) and 0.79 (-1.30,-0.29) standardized unit lower DC and log-LF, respectively, compared to no history of PTSD. Traumatic reminders in patients with PTSD lead to real-time autonomic dysregulation and suggest a potential causal mechanism for increased CVD risk, based on the well-known relationships between autonomic dysfunction and CVD mortality.
  • Cardiac interoception in infants: Behavioral and neurophysiological measures in various emotional and self-related contexts
    Item type: Journal Article
    Weijs, Marieke L.; Daum, Moritz M.; Lenggenhager, Bigna (2023)
    Psychophysiology
    Interoception, the perception of internal bodily signals, is fundamental to our sense of self. Even though theoretical accounts suggest an important role for interoception in the development of the self, empirical investigations are limited, particularly in infancy. Previous studies used preferential-looking paradigms to assess the detection of sensorimotor and multisensory contingencies in infancy, usually related to proprioception and touch. So far, only one recent study reported that infants discriminated between audiovisual stimuli presented synchronously or asynchronously with their heartbeat. This discrimination was related to the amplitude of the infant's heartbeat evoked potentials (HEP), a neural correlate of interoception. In the current study, we measured looking preferences between synchronous and asynchronous visuocardiac (bimodal), and audiovisuocardiac (trimodal) stimuli as well as the HEP in conditions of different emotional contexts and with different degrees of self-relatedness in a mirror-like setup. While the infants preferred trimodal to bimodal stimuli, we did not observe the predicted differences between synchronous and asynchronous stimulation. Furthermore, the HEP was not modulated by emotional context or self-relatedness. These findings do not support previously published results and highlight the need for further studies on the early development of interoception in relation to the development of the self.
  • A mechanism of deficient interregional neural communication in schizophrenia
    Item type: Journal Article
    Popov, Tzvetan; Wienbruch, Christian; Meissner, Sarah; et al. (2015)
    Psychophysiology
    Cognitive interference control is disrupted in schizophrenia (SZ). Neuroimaging studies relate interference control to 4–7 Hz (theta) neural activity in a network spanning prefrontal, anterior cingulate (ACC), and parietal cortices. The mechanism of communication in this network and how it is disrupted in schizophrenia are unclear. Behavioral perfor- mance and EEG theta oscillations were examined in a Stroop color-word interference task in 17 healthy controls (HC) and 14 SZ patients. Color-word incongruence induced less theta power increase in SZ than in HC around 400 ms and 600–900 ms after word onset in ACC, left middle frontal gyrus (MFG), and inferior parietal regions. Coupling of ACC theta phase to MFG gamma amplitude, indexing interregional communication, was weaker in SZ than in HC. Results suggest ACC-MFG theta power modulation as a mechanism of interference control that supports executive function and is disrupted in schizophrenia.
Publications 1 - 8 of 8