آزمایشگاه علوم اعصاب NSL
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دکتر محمد نامی در برنامه خندوانه.
حجم: 210MB
خنده و دانش مغز و اعصاب؛ راهکاری مبتنی بر شواهد در بهبود سطح شادمانی/ https://webda.sums.ac.ir/news-96-1/0724
تحول عظیم در سلامت روان جامعه با اجرای طرح تحول نظام سلامت در حوزه بهداشت/ فعالیت 78 روانشناس در فارس برای تحول در سلامت روان/ https://webda.sums.ac.ir/news-96-1/0726
فردا ساعت 13:30
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برنامه تلویزیونی چرخ، شبکه چهار سیما با حضور دکتر محمد نامی.
موضوع برنامه: خواب
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Noninvasive Deep Brain Stimulation via Temporally Interfering Electric Fields

Summary:

We report a noninvasive strategy for electrically stimulating neurons at depth. By delivering to the brain multiple electric fields at frequencies too high to recruit neural firing, but which differ by a frequency within the dynamic range of neural firing, we can electrically stimulate neurons throughout a region where interference between the multiple fields results in a prominent electric field envelope modulated at the difference frequency. We validated this temporal interference (TI) concept via modeling and physics experiments, and verified that neurons in the living mouse brain could follow the electric field envelope. We demonstrate the utility of TI stimulation by stimulating neurons in the hippocampus of living mice without recruiting neurons of the overlying cortex. Finally, we show that by altering the currents delivered to a set of immobile electrodes, we can steerably evoke different motor patterns in living mice.

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https://www.cell.com/cell/fulltext/S0092-8674(17)30584-6
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ربات Shimon که به وسیله شبکه عصبی و Deep Learning میلیون ها قطعه موسیقی رو بررسی کرده و حالا خودش موسیقی‌ می نویسد و می نوازد!


@NSL_SAMST_SHIRAZ
⬆️ The effectiveness of Neurocognitive Rehab (shared by Dr. Akbar-Fahimi/Ms. Zamani)
⬆️⬆️ Dear All, We got agreement with the NBML for shared initiatives and projects. Please go through this and propose your ideas if any. NSL_Shiraz and the NBML are likely to enjoy shared interests. Awaiting you inputs.
🔽 لطفا فرم های پر شده را به کارشناس محترم NSL سرکار خانم صفایی ارایه بفرمایید.
We got agreement with the NBML for shared initiatives and projects
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infantile amnesia reflects a developmental critical period for hippocampal learning

Episodic memories formed during the first postnatal period are rapidly forgotten, a phenomenon known as 'infantile amnesia'. In spite of this memory loss, early experiences influence adult behavior, raising the question of which mechanisms underlie infantile memories and amnesia. Here we show that in rats an experience learned during the infantile amnesia period is stored as a latent memory trace for a long time; indeed, a later reminder reinstates a robust, context-specific and long-lasting memory. The formation and storage of this latent memory requires the hippocampus, follows a sharp temporal boundary and occurs through mechanisms typical of developmental critical periods, including the expression switch of the NMDA receptor subunits from 2B to 2A, which is dependent on brain-derived neurotrophic factor (BDNF) and metabotropic glutamate receptor 5 (mGluR5). Activating BDNF or mGluR5 after training rescues the infantile amnesia. Thus, early episodic memories are not lost but remain stored long term. These data suggest that the hippocampus undergoes a developmental critical period to become functionally competent.

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https://www.nature.com/neuro/journal/v19/n9/full/nn.4348.html
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Flexible information routing by transient synchrony

Perception, cognition and behavior rely on flexible communication between microcircuits in distinct cortical regions. The mechanisms underlying rapid information rerouting between such microcircuits are still unknown. It has been proposed that changing patterns of coherence between local gamma rhythms support flexible information rerouting. The stochastic and transient nature of gamma oscillations in vivo, however, is hard to reconcile with such a function. Here we show that models of cortical circuits near the onset of oscillatory synchrony selectively route input signals despite the short duration of gamma bursts and the irregularity of neuronal firing. In canonical multiarea circuits, we find that gamma bursts spontaneously arise with matched timing and frequency and that they organize information flow by large-scale routing states. Specific self-organized routing states can be induced by minor modulations of background activity.

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https://www.nature.com/neuro/journal/v20/n7/full/nn.4569.html