Psychedelic Information Theory
Shamanism in the Age of Reason
Search Results : gamma
Showing 1 to 20 of 20
... fibrillary acidic protein-positive) and neurons (gamma-aminobutyric acid-positive) isolated from mouse striata also responded to U50,488 by increasing phospho-p38 immunolabeling. p38 activation was not evident in either striatal astrocytes or neuron...
... findings on the thalamocortical system. gamma-Frequency rhythms of discharge activity from thalamic and cortical neurons are facilitated by cholinergic arousal and resonate in thalamocortical networks, thereby transiently forming assemblies...
Role of GABAB receptor-mediated inhibition in reciprocal interareal pathways of rat visual cortex
In neocortex, synaptic inhibition is mediated by gamma-aminobutyric acid-A (GABAA) and GABAB receptors. By using intracellular and patch-clamp recordings in slices of rat visual cortex we studied the balance of excitation and inhibition in different ...
Thalamic circuitry and thalamocortical synchrony
... dominate the inputs to relay cells and to the gamma-amino butyric acid (GABA)ergic cells of the reticular nucleus (RTN). The capacity of relay neurons to operate in different voltage-dependent functional modes determines that the inputs from the ...
Hypnotic Entrainment and Induced Trance States
... brain cohesion rarely tipping over into the high gamma range of 40 Hz and beyond, bands associated with fast personal awareness and highly focused connective insight. But even higher than gamma is the hypergamma range, which is over 100 Hz; and abov...
... alert or anxious or who have their eyes open. gamma waves. * Gamma is the frequency range approximately 30–100 Hz. Gamma rhythms are thought to represent binding of different populations of neurons together into a network for the purpose...
... nor does it see microwaves, radio waves, x-rays, gamma rays, or anything that falls out of the visual spectrum. This applies to night vision and dark-adapted vision. The dark-adapted eye utilizes the rod cells as opposed to the cone cells of dayligh...
Impairments in frontal cortical gamma synchrony and cognitive control in schizophrenia
... are not yet well characterized. Synchronous gamma-band oscillations have been associated with a wide range of perceptual and cognitive processes, raising the possibility that they may also help entrain prefrontal cortical circuits in the servic...
... and decreased ability to produce the fast gamma oscillations needed to focus sensory perception.8,10 Multisensory destabilization is also reproduced by the hallucinogenic dissociatives ketamine and dextromethorphan (DXM) by blocking associati...
An Overview of Physical Shamanism
... describe a standing wave in the alpha to gamma range driving amplitude along multisensory perceptual bands. As the hallucinogenic voice grows in strength, the resonance of its standing wave then couples with and drives the amplitude of all i...
... same frequency range as brain waves (theta to gamma) are most effective in producing flicker phosphenes.3 Flicker phosphenes created by stroboscopic lights or mind-machines tend to be more amorphous at low frequencies(1-4hz), tend to fall into we...
Annotation: This study reports increase in power in high beta-3 and beta-4 bands and decrease in power in theta bands following ayahuasca intoxication. Aims Ayahuasca is a traditional South American psychoactive beverage used in Amazonian sham...
... within the alpha and beta ranges; high frequency gamma coherence is associated with the fast binding of cortical networks necessary for perception and consciousness.8 Modular coherence is the first operating property of a conscious system; precise t...
Theta and gamma coherence along the septotemporal axis of the hippocampus
Theta and gamma rhythms synchronize neurons within and across brain structures. Both rhythms are widespread within the hippocampus during exploratory behavior and rapid-eye-movement (REM) sleep. How synchronous are these rhythms throughout the hippoc...
Gamma coherence and conscious perception
High-frequency (e.g., gamma 30 to 50 Hz) coherent neural activity has been postulated to underlie binding of independent neural assemblies and thus integrate processing across distributed neuronal networks to achieve a unified conscious experience. P...
EEG gamma coherence and other correlates of subjective reports during ayahuasca experiences
... We believe that finding increases in global gamma coherence during peak psychedelic experiences might contribute to the discussion of binding theory. Also, in light of recent research with gamma coherence during advanced meditative conditions, ...
How the Brain Filters out Distracting Thoughts to Focus on a Single Bit of Information
... different kinds of information," she says. gamma waves as information carriers Colgin and her colleagues measured brain waves in rats, in three different parts of the hippocampus, which is a key memory center in the brain. While listening i...
Frequency of gamma oscillations routes flow of information in the hippocampus
gamma oscillations are thought to transiently link distributed cell assemblies that are processing related information1, 2, a function that is probably important for network processes such as perception1, 2, 3, attentional selection4 and memory5, 6. ...
Local cortical lesions abolish lateral inhibition at direction selective cells in cat visual cortex
... by using heat lesions, localized cooling or gamma-aminobutyric acid (GABA) microiontophoresis. When inactivation affected cortical regions retinotopically representing motion in the non-preferred direction towards the receptive field, the respo...
Timewarp: How your brain creates the fourth dimension
... has found that rhythmic sounds can entrain gamma brain waves, causing the beginning of each sound to be accompanied by a burst of several especially strong wave peaks. The click train may entrain other types of brain waves too - perhaps those ...
Showing 1 to 20 of 20