Did you know? 🤔 The brain 🧠 doesn't truly 'see' colors or 'hear' sounds.

[vorey_peteruuu]

 

[vorey_peteruuu]

@dasari4kntr

[dasari4kntr]

5 hours ago, vorey_peteruuu said:

 

 

5 hours ago, vorey_peteruuu said:

@dasari4kntr

good post...

చాలా పాయింట్స్ ఉన్నాయి చెప్పడానికి..... but where to begin..

ok...first...sensory knwoledge...

five senses (పంచేద్రియాలు)... hearing, seeing, touch, taste and smell...

వీటి నుండు వచ్చే knowledge (జ్ఞానం)...ని process చేసుకునేది..consciousness...ఈ processing కి కావలిసింద..analytics and language...

in all our five senses... seeing and hearing is wave form...rest are checmical reactions...(but brain process those in wave forms..)

 

seeing is ...prism effect of electro magnetic waves.... మన కంటికి ఒక నిర్దిష్ట wave length ఉండేవే కనిపిస్తాయి... అది మన limitation....but కొన్ని జంతువులు,పక్షులు, పురుగులు...మనిషి చూడలేనివి కూడా చూస్తాయి...such as infrared or ultra violett...etc..

similar for the sound as well... we can listen in one frequency...but other animals..such as dogs..etc can listen in different frequencies too...

 

 

 

 

but this video...tells about one interesting topic...such as brain contains no colors and inteprations of sounds...

thats true...all we do is memory...part of consciousness...when we see or hear first time some frequency...we store it...and we recollect it when we see or hear the same frequecny...thats same for other senses like taste, smell and touch...etc

...these  are empirical exercises...always depends on sensory knowledge and draws the conclusions based on sensory knowledge...

 

but the problem with empiricism is...how can you explain the color of red to a blind man who is born blind...? 

this video is missing the blind man example...

 

[dasari4kntr]

@vorey_peteruuu read this..its interesting...

 

Certainly! Let’s dive deeper into brain waves, their roles, and how they relate to brain function and consciousness.

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What Are Brain Waves?

Brain waves are rhythmic, synchronized patterns of electrical activity produced by groups of neurons firing together. These oscillations are measured using electroencephalography (EEG) and categorized by their frequency (cycles per second, or Hertz, Hz) and amplitude (wave height). Each type of wave is associated with specific mental states, behaviors, or cognitive processes.

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Types of Brain Waves & Their Roles

Here’s a breakdown of the major brain wave categories and their functions:

1. Delta Waves (0.5–4 Hz)

• Role:

  • Dominant during deep, dreamless sleep (Stage 3 and 4 of non-REM sleep).

  • Critical for physical restoration, immune function, and memory consolidation.

• Example: Infants have strong delta activity, reflecting their need for deep sleep.

2. Theta Waves (4–8 Hz)

• Role:

  • Linked to light sleep, daydreaming, and creativity.

  • Active during meditation, hypnosis, and REM sleep (dreaming).

  • Involved in emotional processing (e.g., fear, nostalgia) and spatial navigation.

• Example: Theta spikes occur when you’re lost in thought while driving a familiar route.

3. Alpha Waves (8–12 Hz)

• Role:

  • Dominant in relaxed, wakeful states (e.g., closing your eyes, mindfulness).

  • Acts as a "bridge" between conscious thinking and subconscious processing.

  • Suppressed during focused mental activity (e.g., solving a math problem).

• Example: Increased alpha waves during meditation are linked to reduced stress.

4. Beta Waves (12–30 Hz)

• Role:

  • Associated with active, analytical thinking and alertness.

  • Subdivided into:

    • Low Beta (12–15 Hz): Calm focus (e.g., reading).

    • Mid Beta (15–20 Hz): Problem-solving or decision-making.

    • High Beta (20–30 Hz): Stress, anxiety, or hypervigilance.

• Example: Beta waves spike during a high-stakes exam or intense conversation.

5. Gamma Waves (30–100 Hz)

• Role:

  • Linked to peak cognitive performance, insight, and "aha!" moments.

  • Involved in binding sensory inputs (e.g., unifying sight, sound, and touch into a coherent experience).

  • Associated with heightened focus (e.g., expert musicians mid-performance).

• Example: Gamma activity surges during moments of sudden clarity or creativity.

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How Brain Waves Work

• Synchronization: Neurons fire in coordinated rhythms, creating wave-like patterns. This synchronization allows efficient communication across brain regions.

• Inhibition vs. Excitation: Slower waves (delta, theta) often reflect inhibitory states (resting), while faster waves (beta, gamma) correlate with excitatory states (active thinking).

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Practical Applications

1. Clinical Diagnostics:

   • EEG detects abnormal patterns (e.g., epilepsy spikes, coma states).

   • Delta/theta excess may indicate brain injury or sleep disorders.

2. Neurofeedback:

   • Training individuals to modulate their brain waves (e.g., boosting alpha for relaxation).

3. Brain-Computer Interfaces (BCIs):

   • Using beta/gamma waves to control prosthetics or computers.

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Brain Waves vs. Consciousness

While brain waves correlate with conscious states, they are not consciousness itself. Think of them as the "electrical language" the brain uses to coordinate activity.

• Consciousness is emergent: It arises from the global integration of information across neural networks, not just individual waves.

• The "Hard Problem": Even if we map all brain waves, we still can’t fully explain why subjective experience (e.g., feeling love or seeing color) exists.

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Summary Table

Wave Type	Frequency	Mental State	Key Function
Delta	0.5–4 Hz	Deep sleep	Physical restoration
Theta	4–8 Hz	Daydreaming, light sleep	Creativity, emotional processing
Alpha	8–12 Hz	Relaxed wakefulness	Stress reduction, mindfulness
Beta	12–30 Hz	Active thinking, stress	Focus, problem-solving
Gamma	30–100 Hz	Peak cognition, insight	Sensory integration, creativity

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Key Takeaway

Brain waves are the rhythmic "music" of the brain, reflecting its dynamic states. While they help us understand how the brain operates, the mystery of why we have subjective experiences (consciousness) remains unsolved. Think of brain waves as the orchestra and consciousness as the symphony they create together. 🎶🧠