Which brain area when injured interrupts EEG MicroStates variations? What types of stimuli, movement, food, attention, TMS discharges or drugs can change EEG MicroStates?

Which brain area when injured interrupts EEG MicroStates variations?
What types of stimuli, movement, food, attention, TMS discharges or drugs can change EEG MicroStates?

What change EEG MicroStates

EEG microstates are thought to reflect synchronized activity across distributed brain networks, rather than being generated by a single brain region. That being said, the disruption of certain brain areas can potentially influence the dynamics of EEG microstates.

Thalamocortical Networks: Damage to the thalamus or the connections between the thalamus and the cortex can potentially disrupt the generation and modulation of EEG microstates. The thalamus plays a critical role in regulating the flow of information to the cortex.

Prefrontal Cortex: This region of the brain is implicated in a range of higher cognitive functions, including attention and executive function. Injury to this area might alter the dynamics of EEG microstates, particularly those associated with cognitive processes.

Parietal and Temporal Lobes: These areas are involved in sensory processing and the integration of sensory information. Injury to these areas might disrupt EEG microstates associated with sensory processing.

Cingulate Cortex: This is a part of the limbic system involved in emotion and pain processing. Injury to this area might influence EEG microstates associated with emotional processing.

Retinotopic Regions: Areas associated with visual processing might be involved in EEG microstates associated with visual stimuli.

It's important to note that the study of EEG microstates is relatively complex and still under ongoing research. Different microstates might be associated with different networks of brain regions, and the disruption of various brain areas might influence the dynamics of EEG microstates in complex ways. Moreover, large-scale brain injuries or diffuse damage (as might be seen in certain types of brain injury or neurodegenerative diseases) could potentially disrupt the dynamics of EEG microstates more broadly.

EEG microstates are brief (tens to hundreds of milliseconds), topographically stable patterns of scalp electric fields. These microstates are thought to represent basic building blocks of human information processing, and they can be influenced by various stimuli and interventions. Here are some types of stimuli and factors that could potentially influence EEG microstates:

Sensory Stimuli:

Visual Stimuli: Different patterns, lights, or images may influence the microstates.

Auditory Stimuli: Variations in sound, music, or speech might have an effect.

Movement:

Motor Tasks: Engaging in different motor tasks or movements can influence the microstates.

Food:

Nutrition: Certain foods or nutrients might influence brain function and potentially alter EEG microstates, though more research would be needed in this area.

Attention:

Focus and Concentration: Tasks that require varying levels of focus and concentration can influence the microstates.

Meditation: Engaging in meditation, which often involves focused attention, might influence the microstates.

TMS Discharges:

Brain Stimulation: Transcranial magnetic stimulation (TMS) can directly influence brain activity and thereby potentially influence EEG microstates.

Magnetic stimulation selectively affects pre-stimulus EEG microstates

rTMS affects EEG microstates dynamic during evoked activity


Drugs:

Psychoactive Drugs: Drugs that influence brain function, including both medicinal and recreational drugs, can influence EEG microstates.

Pharmacological Interventions: Different medications, including those for mental health conditions, can influence EEG microstates.

Emotional and Psychological States

Stress and Anxiety: These states can influence brain function and potentially alter EEG microstates.

Mood: Different moods or emotional states might influence the microstates.

Sleep:

Sleep Stages: Different stages of sleep can be associated with changes in EEG microstates.

It is essential to note that the effects of these factors on EEG microstates can be complex and can vary between individuals. Moreover, the study of EEG microstates is an evolving field, and new research might provide more insights into how various factors influence these microstates.

EEG microStates - brain area is over-recruited - changes to the brain connectome

Que área cerebral quando lesada interrompe as variações do EEG MicroStates?

Que tipo de estímulo, movimento, alimento, atenção, descargas TMS ou drogas podem mudar o EEG MicroStates?