After images (also known as palinopsia) are visual perceptions that continue to appear in one's vision after exposure to the original image has ceased. They are most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

An autonomous entity is the experience of perceived contact with beings that appear to be sentient in their behaviour. They are most commonly induced under the influence of heavy dosages of hallucinogenic compounds.

Brightness alteration is a distortion or change in the intensity of perceived brightness comprising a person's vision. It is most commonly induced under the influence of moderate dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and cannabinoids.

Colour enhancement is a perceived intensification of the brightness and vividness of colours in the external environment. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Colour shifting is when objects within the environment fluidly change their colour through a continuously repeating cycle. It is most commonly induced under the influence of psychedelic compounds.

Depth perception distortions are alterations in how a person perceives the distance of various objects within their visual field. They are most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Diffraction is the experience of seeing rainbows and spectrums of colour embedded within the brighter parts of a person's visual field. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Drifting is the experience of the texture, shape, and general structure of objects and scenery appearing progressively warped, melted, and morphed across themselves. It is most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Geometry is the experience of a person's field of vision becoming partially or completely encompassed by fast-moving, colourful, and extremely complex geometric patterns, form constants, shapes, fractals, and colours.

Increased pareidolia is an increase in a person's ability and tendency to recognise patterns (usually faces) within vague stimuli. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

An internal hallucination is the perception of a visual hallucination that exclusively occurs within an imagined environment that can typically only be viewed with closed eyes, similar to those found within dreams. They are most commonly induced under the influence of heavy dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and deliriants.

A perspective hallucination is an alteration of the perspective through which a given internal or external hallucination is seen through. They are most commonly induced under the influence of heavy dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and deliriants.

Pupil dilation can be described as the enlargement of the size of a person's pupils under normal lighting conditions. This is most commonly induced under the influence of moderate dosages of a wide variety of serotonergic compounds, such as psychedelics, dissociatives, deliriants, entactogens, various stimulants, and some antidepressants.

Settings, sceneries, and landscapes are the perceived environments in which the plot of an internal or external hallucination occurs. This effect is capable of manifesting in a seemingly infinite variety of potential places and settings. They are most commonly induced under the influence of heavy dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and deliriants.

Symmetrical texture repetition is the perception of textures becoming mirrored repeatedly over their own surface in an intricate and symmetrical fashion that is consistent across itself. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Tracers are the experience of visual trails of varying lengths and opacity being left behind moving objects. They are most commonly induced under the influence of mild dosages of psychedelic compounds.

Transformations are the experience of a perceived visual metamorphosis that specific parts of one's external environment undergo as they shapeshift into other objects. They are most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Visual acuity enhancement is a heightening of the clearness and clarity of vision. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Visual exposure to inner mechanics of consciousness is the experience of being exposed to a mass of visual geometry comprised entirely of innately readable representations which subjectively feel as if they convey the inner mechanics that compose all underlying neurological processes.

Excessive yawning can be described as the experience of repeated, intensified, overly frequent, and spontaneous yawning despite a complete absence of genuine sedation or sleepiness. It is most commonly induced under the influence of moderate dosages of tryptamine psychedelic compounds, such as psilocybin, 4-AcO-DMT, 4-HO-MET, and ayahuasca.

A runny nose can be described as a condition where the nasal cavity is filled with a significant amount of mucous fluid, otherwise known as "snot". It is most commonly induced under the influence of heavy dosages of tryptamine psychedelic compounds, such as psilocybin, 4-AcO-DMT, and 4-HO-MET. However, it can also occur under the influence of opioid withdrawals) and as a symptom of cocaine abuse.

Sedation can be described as a decrease in a person's physical energy levels which are interpreted as discouraging when it comes to wakefulness, movement, performing tasks, talkativeness, and general exercise. It is most commonly induced under the influence of moderate dosages of depressant compounds, such as opioids, GABAergics, and antipsychotics.

Watery eyes can be described as a physical effect which results in a state of continuous involuntary streaming, tearing, crying, and watering of the tear ducts within one's eyes. It is most commonly induced under the influence of moderate dosages of psychedelic tryptamine compounds, such as psilocybin, 4-AcO-DMT, and 4-HO-MET.

Scenarios and plots are the situations, stories, and events that occur within both external and internal hallucinations. They are most commonly induced under the influence of heavy dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and deliriants.

An auditory distortion is the experience of perceived alterations in how audible noises present and structure themselves. They are most commonly induced under the influence of hallucinogenic compounds.

An auditory enhancement is the experience of an increase or improvement of the acuteness and clarity of sound. They are most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

An auditory hallucination is the experience of hearing spontaneous and imaginary noises. They are most commonly induced under the influence of moderate dosages of hallucinogenic compounds, such as psychedelics, deliriants, and dissociatives.

Spontaneous tactile sensations are the experience of sensations across the body occurring without any obvious or immediate physical trigger. This results in feelings of seemingly random yet distinct tingling sensations that occur across the skin and within the body. Depending on the psychoactive substance consumed, these vary greatly in their styles of sensation.

Analysis enhancement is a perceived improvement of a person's overall ability to logically process information or creatively analyze concepts, ideas, and scenarios. It is most commonly induced under the influence of moderate dosages of stimulant and nootropic compounds, such as amphetamine, methylphenidate, nicotine, and caffeine.

Autonomous voice communication is the experience of being able to hear and converse with a disembodied and audible voice of unknown origin which seemingly resides within one's own head. It is most commonly induced under the influence of heavy dosages of hallucinogenic compounds such as psychedelics, dissociatives, and deliriants.

Conceptual thinking is an alteration to the nature and content of one's internal thought stream. This alteration predisposes a user to think thoughts that are no longer primarily comprised of words and linear sentence structures. Instead, thoughts become equally comprised of what is perceived to be extremely detailed renditions of the innately understandable and internally stored concepts that words exist to label. It is most commonly induced under the influence of moderate dosages of hallucinogenic compounds, such as psychedelics and dissociatives.

Déjà Vu or Deja Vu can be described as the sudden sensation that a current event or situation has already been experienced at some point in the past when, in actuality, it hasn't. It is most commonly induced under the influence of moderate dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and cannabinoids.

A delusion is a false idea or belief that is held with strong conviction and subjective certainty and is inconsistent with an individual’s educational, cultural and social background. Delusions are most commonly induced under the influence of heavy dosages of hallucinogenic compounds, such as psychedelics, deliriants, and dissociatives.

Emotion intensification is an increase in a person's current emotional state beyond normal levels of intensity. It is most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Enhancement and suppression cycles is an effect which results in two opposite states of mind that do not occur simultaneously but instead swap between each other at seemingly random intervals. The first of these two alternate states can be described as the experience of cognitive enhancements which feel is if they drastically improve the person's ability to think clearly. The second of these two alternate states can be described as the experience of a range of cognitive suppressions which feel as if they drastically inhibit the person's ability to think clearly. They are most commonly induced under the influence of heavy dosages of psychedelic tryptamines, such as psilocybin, ayahuasca, and 4-AcO-DMT.

Existential self-realization can be described as a sudden realization, revelation, or reaffirmation of a person's existence within this universe. Existential self-realization is most commonly induced under the influence of moderate dosages of psychedelic and dissociative compounds such as ketamine, LSD, 4-AcO-DMT, and DCK.

Immersion enhancement is an effect that results in a pronounced increase in one's tendency to become fully captivated and engrossed by external stimuli, such as film, TV shows, video games, and various other forms of media. It is most commonly induced under the influence of moderate dosages of dissociative compounds, such as ketamine, PCP, and DXM.

Increased music appreciation is a general sense of an increased enjoyment of music. It is most commonly induced under the influence of moderate dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and cannabinoids

Memory suppression is an inhibition of a person's ability to maintain a functional short and long-term memory. It is most commonly induced under the influence of moderate dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and deliriants.

Novelty enhancement is a feeling of increased fascination, awe, and appreciation attributed to specific parts or the entirety of one's external environment. It is most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Personal bias suppression is a decrease in the cultural biases that a person filters their perception through. It is most commonly induced under the influence of hallucinogenic substances.

Spirituality enhancement can be described as the experience of a shift in a person’s personal beliefs regarding their existence and place within the universe, their relationship to others, and what they value as meaningful in life. It is most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

Thought connectivity is an alteration of a person's thought stream which is characterized by a distinct increase in wandering thoughts which connect into each other through a fluid association of ideas. It is most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.

A thought loop is the experience of becoming trapped within a chain of thoughts, actions and emotions which repeats itself over and over again in a cyclic loop. Thought loops are most commonly induced under the influence of heavy dosages of hallucinogenic compounds, such as psychedelics and dissociatives. However, they can also occur to a lesser extent under the influence of extremely heavy dosages of stimulants and benzodiazepines.

Time distortion is an effect that makes the passage of time feel wildly altered and difficult to keep track of. is most commonly induced under the influence of strong dosages of hallucinogenic compounds, such as psychedelics, dissociatives, and cannabinoids.

Unity and interconnectedness refers to a feeling in which one's sense of self becomes temporarily expanded to include one or more concepts or systems that would not typically be included within one’s sense of individual identity. It most commonly occurs under the influence of psychedelic and dissociative compounds, such as LSD, DMT, ayahuasca, mescaline, and ketamine.

Wakefulness is an increased ability to stay conscious without feeling sleepy combined with a decreased need to sleep. It is most commonly induced under the influence of moderate dosages of a wide variety of compounds such as stimulants, nootropics, and psychedelics.

Synaesthesia (also spelt synesthesia or synæsthesia) is the experience of a blending, merging, or mixing of the senses. Synaesthesia is commonly induced under the influence of heavy dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.