EEG symmetry (1 and 2)

Brain and cognition RF 1 + 2

What does EEG stand for?

EEG stands for electroencephalography.

When was EEG invented?

EEG was invented in 1929.

Who invented EEG?

EEG was invented by Hans Berger.

What is the primary use of EEG?

EEG is primarily used as an affordable neuroimaging technique to measure human brain activity.

What does current represent in terms of neurons?

Current represents the flow of charged particles in neurons.

How does voltage relate to current flow?

Voltage is the potential that drives the current flow from one place to another.

What is SPN in the context of EEG?

SPN stands for Sustained Posterior Negativity.

Which cognitive event does the ERP signal represent?

The ERP signal represents discrete cognitive perceptual events in the brain.

What areas of the brain show increased blood flow when viewing symmetrical images?

The extrastriate cortex shows increased blood flow for symmetrical images.

How does the brain respond to symmetry according to the claims made in the lecture?

The brain responds to symmetry automatically

What proportion of symmetry in dot patterns was used in the experiments?

The proportions of symmetry used were 20%

What does perceptual goodness refer to?

Perceptual goodness refers to how well a configuration is perceived as regular or good compared to others.

What is the correlation between working memory load and SPN amplitude?

Higher working memory load results in a larger/negative SPN.

Can the brain recover symmetry from an image even if it is not evident?

Yes

What happens to SPN when symmetrical patterns are shown with negatively valenced words?

Attending negatively valenced words may block symmetry processing

How does the brain's response to symmetry vary with individual differences?

Individual differences in DMT signaling might explain variations in religiosity

What effect do hallucinogenic drugs have on the extrastriate symmetry network?

Hallucinogenic drugs activate the extrastriate symmetry network.

What is the impact of repeating symmetrical presentations on SPN?

Repeated presentations enhance symmetry processing

How is working memory related to visual perception?

Visual working memory enables people to see and remember things for several seconds

What concept describes how the brain integrates information over time?

The brain integrates pattern information presented over different points in time.

What is the significance of the "complete Liverpool SPN catalogue"?

It aims to improve reproducibility in research by providing a public database of SPN data sets.

What is a common threshold dose for DMT?

A common threshold dose for DMT is 4 mg.

What might happen at Level 5 of a DMT trip?

At Level 5

What occurs at Level 6 of a DMT trip?

At Level 6

Why might someone experience a bad trip on DMT?

Bad trips can occur due to feelings of fear or anxiety

What is one unusual side effect of consuming DMT?

An unusual side effect may include feeling like the world is interconnected through fractal patterns.

How does symmetry affect visual processing when colored dots are used?

SPNs generated from attention to color can demonstrate stronger responses in symmetry processing.

What might visual working memory capacity allow one to remember?

Visual working memory may allow a person to remember about 4 objects.

What is meant by 'SPN priming'?

SPN priming refers to the increase in SPN amplitude due to prior experiences with symmetry stimuli.

What technology is used to observe brain activity in this context?

EEG technology is used to observe brain activity.

How is the quality of regularities related to SPN amplitude?

Obvious regularities produce larger

What is the relationship between color and symmetry in visual processing?

The symmetry network in the brain is indifferent to color while processing symmetry.

What is the role of the contralateral SPN?

The contralateral SPN indicates how the visual field projects to the opposite cerebral hemisphere.

Why are replication studies important in psychology?

Replication studies ensure findings are reliable and not false due to biases or errors.

Which areas of the brain are sensitive to symmetry?

Primary visual cortex (V1) and extrastriate cortex are sensitive to symmetry.

What does fMRI tell researchers about the brain's response to symmetry?

fMRI reveals specific brain areas that respond to symmetry

How does attentional focus affect SPN?

Attentional focus enhances symmetry processing

How does the human brain store information related to symmetry?

The brain integrates original images with secondary images to notice symmetry through SPN.

What term describes the brain's automatic response to symmetrical stimuli?

This automatic response is referred to as pre-attentive processing.

What type of patterns were used to assess symmetry processing?

Patterns of dots arranged symmetrically or randomly were used to assess symmetry processing.

How do hallucinogenic experiences differ from typical drug trips?

DMT induces ego death

What was discussed about the visual working memory in the lecture?

Visual working memory capacity is surprisingly low

What evidence supports the claim that the brain responds to symmetrical images?

Several fMRI studies have consistently replicated findings of a brain response to symmetry.