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  2. PDF Split and Merge - Wikipedia

    en.wikipedia.org/wiki/PDF_Split_and_Merge

    PDFsam Basic or PDF Split and Merge is a free and open-source cross-platform desktop application to split, merge, extract pages, rotate and mix PDF documents. PDFsam uses a freemium model and encourages buying the full version with popups.

  3. Mind machine - Wikipedia

    en.wikipedia.org/wiki/Mind_machine

    Mind machines include flashing light devices, which are similar to the Brion Gysin dreamachine in that both produce a flickering visual field. Unlike flashing light devices, the dreamachine can be used by several people at once, but has few, if any, technical features.

  4. Brainwave entrainment - Wikipedia

    en.wikipedia.org/wiki/Brainwave_entrainment

    Brainwave entrainment is a colloquialism for 'neural entrainment', [25] which is a term used to denote the way in which the aggregate frequency of oscillations produced by the synchronous electrical activity in ensembles of cortical neurons can adjust to synchronize with the periodic vibration of external stimuli, such as a sustained acoustic ...

  5. Brain activity and meditation - Wikipedia

    en.wikipedia.org/wiki/Brain_activity_and_meditation

    Highlighted region shows the anterior cingulate cortex, a region of the brain shown to be activated during meditation. Meditation and its effect on brain activity and the central nervous system became a focus of collaborative research in neuroscience, psychology and neurobiology during the latter half of the 20th century. Research on meditation ...

  6. Audio-visual entrainment - Wikipedia

    en.wikipedia.org/wiki/Audio-Visual_Entrainment

    Audio-visual entrainment (AVE), a subset of brainwave entrainment, uses flashes of lights and pulses of tones to guide the brain into various states of brainwave activity. AVE devices are often termed light and sound machines or mind machines. Altering brainwave activity is believed to aid in the treatment of psychological and physiological ...

  7. Samadhi - Wikipedia

    en.wikipedia.org/wiki/Samadhi

    An image of the Buddha in samadhi from Gal Vihara, Sri Lanka Statue of a meditating Shiva, Rishikesh. Samādhi (Pali and Sanskrit: समाधि), in Hinduism, Buddhism, Jainism, Sikhism and yogic schools, is a state of meditative consciousness.

  8. Smallpdf.com - Wikipedia

    en.wikipedia.org/wiki/Smallpdf.com

    Smallpdf is a Swiss online web-based PDF software, founded in 2013. [2] It offers free version with limited features to compress, convert and edit PDF documents. [ 3 ] And its paid version offers advanced features like OCR, compress, and more [ 4 ] .

  9. Psychonautics - Wikipedia

    en.wikipedia.org/wiki/Psychonautics

    Illustration from The Secret of the Golden Flower, a Chinese book of alchemy and meditation.. Psychonautics (from the Ancient Greek ψυχή psychē 'soul, spirit, mind' and ναύτης naútēs 'sailor, navigator') [1] refers both to a methodology for describing and explaining the subjective effects of altered states of consciousness, including those induced by meditation or mind-altering ...

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