scholarly journals Does hallucination perceptual modality impact psychosis risk?

2019 ◽  
Vol 140 (4) ◽  
pp. 360-370
Author(s):  
H. F. Niles ◽  
B. C. Walsh ◽  
S. W. Woods ◽  
A. R. Powers
Keyword(s):  
Perceptual Modality ◽  
Psychosis Risk

Synaesthesia

2018 ◽  
Author(s):  
Bruno and
Keyword(s):  
Experimental Results ◽  
Multisensory Perception ◽  
Related Phenomenon ◽  
Perceptual Modality ◽  
Sensory Channel ◽  
Multisensory Interactions ◽  
Crossmodal Associations ◽  
The Brain

Synaesthesia is a curious anomaly of multisensory perception. When presented with stimulation in one sensory channel, in addition to the percept usually associated with that channel (inducer) a true synaesthetic experiences a second percept in another perceptual modality (concurrent). Although synaesthesia is not pathological, true synaesthetes are relatively rare and their synaesthetic associations tend to be quite idiosyncratic. For this reason, studying synaesthesia is difficult, but exciting new experimental results are beginning to clarify what makes the brain of synaesthetes special and the mechanisms that may produce the condition. Even more importantly, the related phenomenon known as ‘natural’ crossmodal associations is instead experienced by everyone, providing another useful domain for studying multisensory interactions with important implications for understanding our preferences for products in terms of spontaneously evoked associations, as well as for choosing appropriate names, labels, and packaging in marketing applications.

Methamphetamine use and psychotic symptoms: findings from a New Zealand longitudinal birth cohort

2021 ◽  
pp. 1-8
Author(s):  
Joseph M. Boden ◽  
James A. Foulds ◽  
Giles Newton-Howes ◽  
Rebecca McKetin
Keyword(s):  
New Zealand ◽  
General Population ◽  
Birth Cohort ◽  
Individual Characteristics ◽  
Psychotic Symptoms ◽  
Confounding Factors ◽  
Long Term Effects ◽  
Methamphetamine Use ◽  
Increased Risk ◽  
Psychosis Risk

Abstract Background This study examined the association between methamphetamine use and psychotic symptoms in a New Zealand general population birth cohort (n = 1265 at birth). Methods At age 18, 21, 25, 30, and 35, participants reported on their methamphetamine use and psychotic symptoms in the period since the previous interview. Generalized estimating equations modelled the association between methamphetamine use and psychotic symptoms (percentage reporting any symptom, and number of symptoms per participant). Confounding factors included childhood individual characteristics, family socioeconomic circumstances and family functioning. Long term effects of methamphetamine use on psychotic symptoms were assessed by comparing the incidence of psychotic symptoms at age 30–35 for those with and without a history of methamphetamine use prior to age 30. Results After adjusting for confounding factors and time-varying covariate factors including concurrent cannabis use, methamphetamine use was associated with a modest increase in psychosis risk over five waves of data (adjusted odds ratio (OR) 1.33, 95% confidence interval (CI) 1.03–1.72 for the percentage measure; and IRR 1.24, 95% CI 1.02–1.50 for the symptom count measure). The increased risk of psychotic symptoms was concentrated among participants who had used at least weekly at any point (adjusted OR 2.85, 95% CI 1.21–6.69). Use of methamphetamine less than weekly was not associated with increased psychosis risk. We found no evidence for a persistent vulnerability to psychosis in the absence of continuing methamphetamine use. Conclusion Methamphetamine use is associated with increased risk of psychotic symptoms in the general population. Increased risk is chiefly confined to people who ever used regularly (at least weekly), and recently.

scholarly journals Perceived stress influences anhedonia and social functioning in a community sample enriched for psychosis-risk

2021 ◽  
Vol 135 ◽  
pp. 96-103
Author(s):  
Andrea Pelletier-Baldelli ◽  
Gregory P. Strauss ◽  
Franchesca S. Kuhney ◽  
Charlotte Chun ◽  
Tina Gupta ◽  
...  
Keyword(s):  
Social Functioning ◽  
Perceived Stress ◽  
Community Sample ◽  
Psychosis Risk ◽  
Stress Influences

Genome-wide supported psychosis risk variant in ZNF804A gene and impact on cortico-limbic WM integrity in schizophrenia

2012 ◽  
Vol 159B (3) ◽  
pp. 255-262 ◽  
Author(s):  
Carissa Nadia Kuswanto ◽  
Puay-San Woon ◽  
Xue Bin Zheng ◽  
Anqi Qiu ◽  
Yih-Yian Sitoh ◽  
...  
Keyword(s):  
Risk Variant ◽  
Genome Wide ◽  
Psychosis Risk

scholarly journals Insights into psychosis risk from leukocyte microRNA expression

2016 ◽  
Vol 6 (12) ◽  
pp. e981-e981 ◽  
Author(s):  
C D Jeffries ◽  
D O Perkins ◽  
S D Chandler ◽  
T Stark ◽  
E Yeo ◽  
...  
Keyword(s):  
Microrna Expression ◽  
Psychosis Risk
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