6 documents found, page 1 of 1
Revisiting Alpha Resting State Dynamics Underlying Hallucinatory Vulnerability:...
Honcamp, Hanna; Schwartze, Michael; Amorim, Maria; Linden, David; Pinheiro, Ana P.; Kotz, SonjaResting state (RS) brain activity is inherently non-stationary. Hidden Semi-Markov Models (HsMM) can characterize the continuous RS data as a sequence of recurring and distinct brain states along with their spatio-temporal dynamics. Recent explorations suggest that EEG brain state dynamics in the alpha frequency link to auditory hallucination proneness (HP) in nonclinical individuals. The present study aims to ...
Attention and emotion shape self-voice prioritization in speech processing
Pinheiro, Ana P.; Sarzedas, João; Roberto, Magda Sofia; Kotz, SonjaBoth self-voice and emotional speech are salient signals that are prioritized in perception. Surprisingly, self-voice perception has been investigated to a lesser extent than the selfface. Therefore, it remains to be clarified whether self-voice prioritization is boosted by emotion, and whether self-relevance and emotion interact differently when attention is focused on who is speaking vs. what is being said. T...
The perceived salience of vocal emotions is dampened in non-clinical auditory v...
Amorim, Maria; Roberto, Magda Sofia; Kotz, Sonja; Pinheiro, Ana P.Introduction: Auditory verbal hallucinations (AVH) are a cardinal symptom of schizophrenia but are also reported in the general population without need for psychiatric care. Previous evidence suggests that AVH may reflect an imbalance of prior expectation and sensory information, and that altered salience processing is characteristic of both psychotic and non-clinical voice hearers. However, it remains to be sh...
Changes in vocal emotion recognition across the life span
Amorim, Maria; Anikin, Andrey; Mendes, Augusto J.; Lima, César F.; Kotz, Sonja; Pinheiro, Ana P.The ability to recognize emotions undergoes major developmental changes from infancy to adolescence, peaking in early adulthood, and declining with aging. A life span approach to emotion recognition is lacking in the auditory domain, and it remains unclear how the speaker’s and listener’s ages interact in the context of decoding vocal emotions. Here, we examined age-related differences in vocal emotion recognit...
Variability in white matter structure relates to hallucination proneness
Johnson, Joseph; Schwartze, Michael; Belyk, Michel; Pinheiro, Ana P.; Kotz, SonjaHallucinations are a prominent transdiagnostic psychiatric symptom but are also prevalent in individuals who do not require clinical care. Moreover, persistent psychosis-like experience in otherwise healthy individuals may be related to increased risk to transition to a psychotic disorder. This suggests a common etiology across clinical and non-clinical individuals along a multidimensional psychosis continuum t...
Expectancy changes the self-monitoring of voice identity
Johnson, Joseph; Belyk, Michel; Schwartze, Michael; Pinheiro, Ana P.; Kotz, SonjaSelf-voice attribution can become difficult when voice characteristics are ambiguous, but functional magnetic resonance imaging (fMRI) investigations of such ambiguity are sparse. We utilized voice-morphing (self-other) to manipulate (un-)certainty in self-voice attribution in a button-press paradigm. This allowed investigating how levels of self-voice certainty alter brain activation in brain regions monitorin...