Brain wave frequencies refer to the patterns of neuron electrical activity. They are divided into bandwidths to describe their functions (but note that the precise boundaries of these bands can vary):
Delta Waves (0.5 to 3 Hz)
- Deepest level of dreamless sleep, meditation, and trance states.
- When we’re in deep, restorative sleep.
Theta Waves (3 to 8 Hz)
- REM sleep, deep meditation, and visualization.
- Linked to intuition, creativity, and subconscious mind.
- Common during early stages of sleep.
Alpha Waves (8 to 14 Hz)
- Relaxed, calm, lucid, and not thinking.
- Bridge between conscious and subconscious mind.
- Prominent during relaxation and calm wakefulness.
Beta Waves (14 to 30 Hz)
- Engaged in active, analytical thought.
- Dominant during awake state when one is alert, attentive, or making decisions.
- Can be further divided into Low Beta (12-15 Hz), Beta (15-22 Hz), and High Beta (22-30 Hz).
Gamma Waves (30 to 100+ Hz)
- Associated with higher cognitive functions and formation of ideas.
- Insight, peak focus, expanded consciousness.
- Faster cognitive processing.
It’s important to note that while these frequencies can be measured and have associated states or tasks, the human brain is complex, and there’s a lot going on simultaneously. All of these waves are present to some degree all the time, but depending on the task or state of consciousness, some may be more dominant than others.
Key terms in plain language
Open a term for a concise explanation of language used on this page.
Artificial Intelligence (AI)
Software designed to perform tasks involving prediction, classification, generation, reasoning, or decision support. Business use still requires clear data, governance, security, and human accountability.
API
An application programming interface is a defined way for software systems to exchange data or request functions from one another.
Cloud Computing
Computing resources—such as applications, servers, storage, or databases—delivered from remote infrastructure and scaled as requirements change.
Cybersecurity
The practices and controls used to protect identities, devices, networks, applications, and data from unauthorized access, disruption, or manipulation.
Identity and Access Management (IAM)
The systems and policies that determine who a user is, what resources they may access, and how that access is authenticated and reviewed.
Bandwidth
The amount of data a connection can carry in a given time, usually measured in Mbps or Gbps. More bandwidth supports more users, devices, and simultaneous applications.