Understanding neurofeedback
The Low Energy Neurofeedback System (LENS)
Understanding the approach we use at Gentle Currents Therapy in Langley.
Neurofeedback includes several approaches, and the experience can differ depending on which is used.
At Gentle Currents Therapy in Langley, we offer the Low Energy Neurofeedback System (LENS), an EEG-based approach developed by Dr. Len Ochs.
Here, you can learn what LENS involves, how it differs from other forms of neurofeedback, and how our practitioners approach care.
About the technology
What Is LENS Neurofeedback?
LENS uses information about the brain’s electrical activity to guide the delivery of brief, very low-energy electromagnetic feedback.
Dr. Ochs began the work that led to LENS in 1990. The approach is based on the idea that feedback related to the brain’s recorded activity may influence how that activity is regulated.
During a session
How Does LENS Work?
During LENS neurofeedback, your practitioner places small sensors against selected areas of your scalp and on your ears. The sensors record aspects of your brain’s natural electrical activity using electroencephalography (EEG).
The LENS system uses those readings to guide brief, very low-energy electromagnetic feedback. Most people feel little or nothing while it is delivered.
Your practitioner selects the recording and feedback sequence according to your assessment and how you respond.

A different experience
How Is LENS Different From Traditional Neurofeedback?
Conventional neurofeedback
Many conventional forms of neurofeedback involve active participation. You might watch images on a screen, listen to sounds, or play a computer-based game that responds to your brainwave activity. Through repeated feedback, you practise influencing those patterns.
LENS neurofeedback
LENS takes a different approach. You can sit comfortably while your practitioner manages the equipment and delivers the feedback. There is no screen to concentrate on, game to play, or mental skill you need to practise.
This format may be more manageable for someone who finds sustained concentration difficult. The feedback itself is brief, while your appointment also includes time for preparation, conversation, and reviewing your experience.
For the curious reader
For people seeking psychotherapy for traumatic experiences, our Trauma & PTSD Counselling page explains the clinic’s counselling approaches and how to explore clinician fit. LENS is a distinct service and is not a replacement for trauma-focused psychotherapy.
What Does the Research Tell Us About LENS?
Researchers have studied different forms of neurofeedback in relation to attention, emotional regulation, trauma-related concerns, and brain activity. LENS has its own published research, including clinical observations and controlled studies.
If you’d like to explore the findings, you can go directly to the research discussion in our Understanding Neurofeedback and LENS guide, which also provides links to selected publications.
The people behind your care
How We Approach LENS at Gentle Currents
Technology is one part of the care we offer. Our LENS practitioners begin by listening to what brings you here and reviewing the assessment you complete before your first session. Your health history, sensitivities, and hopes for change all help guide the conversation.
Your practitioner uses this understanding to consider whether LENS is appropriate and how to approach your sessions. They’ll explain the procedure, discuss what you may experience, and welcome your questions so you can make an informed choice. They’ll also pay attention to how you respond as care progresses.
LENS is provided in person at our Langley clinic and may be considered alongside counselling or other forms of support, depending on your needs. For a step-by-step guide to an appointment, read our What to Expect During LENS Neurofeedback page.
Beginning the conversation
Exploring Whether LENS Might Be Right for You
People come with different questions about LENS, including whether it might be relevant to concerns with sleep, concentration, stress, or changes following an injury.
You can meet our neurofeedback practitioners, review our Neurofeedback Fees & Forms, or contact our team to discuss your situation and the next steps.