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[Article Digests for Psychology & Social Work]

Science Daily Mind & Brain Daily Digest (Unofficial)

 

(https://www.sciencedaily.com/releases/2024/09/240924165725.htm) Psychedelics excite cells in hippocampus to reduce anxiety
Sep 24th 2024, 16:57

A classic psychedelic, similar to LSD, psilocybin and mescalin, was found to activate a cell type in the brain that silences other neighboring neurons, a result that provides insight into how such drugs reduce anxiety, according to a new study.

(https://www.sciencedaily.com/releases/2024/09/240924165714.htm) Placebo pain relief and positive treatment expectations are not caused by dopamine, researchers find
Sep 24th 2024, 16:57

New findings argue against a direct causal role for dopamine during the experience of a treatment effect in the establishment of positive treatment expectations and placebo analgesia in healthy volunteers, according to a new study.

(https://www.sciencedaily.com/releases/2024/09/240924123011.htm) Common brain network detected among veterans with traumatic brain injury could protect against PTSD
Sep 24th 2024, 12:30

Researchers analyzed 193 patients from the Vietnam Head Injury Study with penetrating traumatic brain injury to determine if the location of shrapnel damage to their brains influenced risk of developing PTSD. Damage to areas connected to the amygdala was associated with a lower chance of developing PTSD. The study suggests lesions that could protect against PTSD map to a specific brain circuit connected to the amygdala and the medial prefrontal cortex.

(https://www.sciencedaily.com/releases/2024/09/240924123006.htm) Lengthened consonants mark the beginning of words
Sep 24th 2024, 12:30

Speech consists of a continuous stream of acoustic signals, yet humans can segment words from each other with astonishing precision and speed. To find out how this is possible, a team of linguists has analysed durations of consonants at different positions in words and utterances across a diverse sample of languages. They have found that word-initial consonants are, on average, around 13 milliseconds longer than their non-initial counterparts. The diversity of languages for which this effect was found suggests that this might be a species-wide pattern -- and one of several key factors for speech perception to distinguish the beginning of words within the stream of speech.

(https://www.sciencedaily.com/releases/2024/09/240924122950.htm) A risky business: Why do some Parkinson's disease treatments affect decision making?
Sep 24th 2024, 12:29

Parkinson's disease, a debilitating nervous system disorder, is treated with medications that sometimes cause impaired decision-making and poor impulse control. Now, researchers have identified a structure in the brain called the external globus pallidus which may be responsible for this side effect, paving the way for new treatments.

(https://www.sciencedaily.com/releases/2024/09/240923151742.htm) Research quantifying 'nociception' could help improve management of surgical pain
Sep 23rd 2024, 15:17

New statistical models based on rigorous physiological data from more than 100 surgeries provide objective, accurate measures of 'nociception,' the body's subconscious perception of pain.

(https://www.sciencedaily.com/releases/2024/09/240923110719.htm) Social media posts may provide early warning of PTSD problems
Sep 23rd 2024, 11:07

Scientists have analyzed millions of tweets to identify COVID-19 survivors living with post-traumatic stress disorder (PTSD) -- demonstrating the effectiveness of using social media data as a tool for early screening and intervention.

Forwarded by:
Michael Reeder LCPC
Baltimore, MD

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