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[Article Digests for Psychology & Social Work]

Psychology Research News -- ScienceDaily Daily Digest (Unofficial)

 

(https://www.sciencedaily.com/releases/2024/10/241025122547.htm) Depression: Dysfunction of neurons in the amygdala may be behind negative perceptions of the environment
Oct 25th 2024, 12:25

One of the characteristics of depression is a tendency to perceive sensory stimuli and everyday situations in an excessively negative way. But the mechanisms underpinning this 'negativity bias,' which can fuel the development of depressive symptoms, had previously remained largely unknown. To shed light on the question, scientists decided to explore the amygdala and observe how it functions during depressive episodes. Their findings suggest that a depressive state alters certain specific neural circuits, leading to a reduction in the activity of neurons involved in pleasant perceptions of positive stimuli and an overactivation of those responsible for the perception of negative stimuli.

(https://www.sciencedaily.com/releases/2024/10/241024134850.htm) New formation of neurons from stem cell niche disrupted after stroke
Oct 24th 2024, 13:48

Researchers studied what happens immediately after a stroke in the stem cell niche known as the subventricular zone, using a mouse model. This revealed a mechanism that results in fewer newborn neurons from the stem cell niche surviving after stroke, thereby significantly limiting the neurogenic reaction of the subventricular zone to repair the brain. This fundamental understanding of the cellular processes in the brain could help in future to boost the body's own repair to replace lost neurons and ameliorate the consequences of stroke.

(https://www.sciencedaily.com/releases/2024/10/241024131817.htm) Gene named for mythical Irish land could aid muscle function after traumatic nerve injuries
Oct 24th 2024, 13:18

Researchers describe how a gene called NANOG can improve the regrowth of damaged nerves after traumatic nerve injuries, like those sustained in motor vehicle accidents or gunshot wounds.

Forwarded by:
Michael Reeder LCPC
Baltimore, MD

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