السيروتونين قد يؤدي إلى تفاقم أعراض طنين الأذن وفقاً لدراسة جديدة

15 مايو، 2026

من إعداد الذكاء الاصطناعي

تشير أبحاث جديدة إلى أن السيروتونين، وهو مادة كيميائية في الدماغ تعززها العديد من مضادات الاكتئاب، يمكن أن يفاقم من طنين الأذن. وحدد العلماء دائرة دماغية محددة لدى الفئران تربط بين مستويات السيروتونين المرتفعة والسلوكيات التي تحاكي حالة الطنين.

نشر فريق من جامعة أوريغون للصحة والعلوم وجامعة أنهوي في الصين هذه النتائج في دورية وقائع الأكاديمية الوطنية للعلوم. وقد استخدم الباحثون علم البصريات الوراثي لتحفيز الخلايا العصبية المنتجة للسيروتونين، ولاحظوا زيادة في النشاط في مناطق الدماغ السمعية، إلى جانب استجابات شبيهة بالطنين لدى الفئران من خلال اختبار مفاجأة معدل. وتعتمد هذه الدراسة على أعمال سابقة أجريت عام 2017، وتتوافق مع تقارير لبعض المرضى الذين يعانون من تفاقم طنين الأذن عند تناول مثبطات استرداد السيروتونين الانتقائية.

Study finds infrasound can raise cortisol and irritability even when people can’t hear it

4 مايو، 2026 من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي تم التحقق من الحقائق

A small controlled experiment reported in Frontiers in Behavioral Neuroscience found that exposure to infrasound—ultra-low-frequency vibration below the range of human hearing—was associated with higher salivary cortisol and more negative mood ratings, even though participants could not reliably detect when the infrasound was present.

Study explains psychedelics' effects on brain's visual and memory systems

Researchers have discovered that psychedelic substances suppress visual processing in the brain, leading to hallucinations by drawing on memory fragments. The study, conducted using advanced imaging on mice, shows how slow brain waves shift perception toward internal recall. These findings could inform therapies for depression and anxiety.

24-minute music session reduces anxiety in clinical trial

16 مارس، 2026 من إعداد الذكاء الاصطناعي

A randomized clinical trial found that 24 minutes of specially designed music paired with auditory beat stimulation significantly lowers anxiety symptoms. Researchers at Toronto Metropolitan University tested various listening durations on 144 adults with moderate anxiety. The 24-minute session provided the strongest benefits.

صحة

Scientists identify brain circuit for chronic pain transition

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Closing eyes impairs hearing in noisy environments, study finds

صحة

Slow breathing calms anxiety without mindfulness in mice study

UCLA study finds five-day accelerated TMS schedule performed similarly to conventional six-week course for treatment-resistant depression

Researchers at UCLA Health report that delivering transcranial magnetic stimulation (TMS) in an intensive five-day schedule—five sessions per day for five days—was associated with depression symptom improvements comparable to a conventional six-week schedule in a retrospective analysis of 175 patients with treatment-resistant depression. The study also found that some patients who showed little immediate change after the accelerated course improved noticeably in the following weeks.

Single dose of DMT eases depression symptoms in small trial

16 فبراير، 2026 من إعداد الذكاء الاصطناعي

A small clinical trial has found that a single dose of the psychedelic drug dimethyltryptamine (DMT) led to rapid and sustained reductions in depression symptoms when combined with therapy. Participants experienced improvements lasting up to six months, with mild side effects reported. The study highlights potential benefits of short-acting psychedelics for treatment-resistant depression.

PET brain scans link ketamine’s rapid antidepressant effect to shifts in AMPA receptor availability

A study in Molecular Psychiatry used PET imaging with a new tracer to track changes in AMPA-type glutamate receptors in people with treatment-resistant depression receiving ketamine, reporting that region-specific receptor changes were associated with symptom improvement.

10 مايو 2026 05:49

Modified psilocin derivatives show antidepressant-relevant serotonin activity in mice with fewer psychedelic-like effects

20 فبراير 2026 01:55

السيروتونين قد يؤدي إلى تفاقم أعراض طنين الأذن وفقاً لدراسة جديدة

مقالات ذات صلة

Study finds infrasound can raise cortisol and irritability even when people can’t hear it

Study explains psychedelics' effects on brain's visual and memory systems

24-minute music session reduces anxiety in clinical trial

Scientists identify brain circuit for chronic pain transition

Closing eyes impairs hearing in noisy environments, study finds

Slow breathing calms anxiety without mindfulness in mice study

UCLA study finds five-day accelerated TMS schedule performed similarly to conventional six-week course for treatment-resistant depression

Single dose of DMT eases depression symptoms in small trial

PET brain scans link ketamine’s rapid antidepressant effect to shifts in AMPA receptor availability

Scientists identify molecular switch that limits scratching

Gene therapy restores hearing in patients born deaf

Intestinal cells signal brain to curb hunger during parasitic infections

Study links early childhood stress to lifelong digestive problems

Study links nitric oxide to mTOR overactivity in some autism-related models

Modified psilocin derivatives show antidepressant-relevant serotonin activity in mice with fewer psychedelic-like effects

New insights revive substance P as migraine drug target

Dream hacking improves problem-solving in sleep

Study links two somatostatin receptors to the brain’s ability to break down amyloid-beta

Northwestern scientists nudge dreams to boost puzzle-solving

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