PDF Summary:The Awakened Brain, by Lisa J. Miller

Many of us struggle with depression, anxiety, and a sense of disconnection from the world around us. In The Awakened Brain, psychologist Lisa J. Miller argues that these struggles stem from neglecting our innate capacity for spiritual awareness—a capacity that's hardwired into our brains and essential for our well-being.

Miller explains how spiritual consciousness activates specific neural networks and protects against mental health issues, particularly in adolescents. She explores the genetic and environmental factors that shape our spiritual capacity, and outlines practices for cultivating awakened awareness—from spending time in nature to recognizing meaningful coincidences. You'll learn how developing this awareness can help you make better decisions, strengthen your resilience, and deepen your connection to others and the natural world.

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Miller notes that biologically, periods of profound spiritual consciousness are the same regardless of whether they explicitly relate to religion. They share equivalent felt intensity and activate the same fMRI pathways. Whether they're religious or spiritual but not religious, individuals engage identical neural pathways related to spiritual perception.

(Shortform note: While Miller claims that religious and nonreligious spiritual experiences are biologically identical, researchers have found that the brain networks involved in religious and nonreligious spiritual experiences are largely overlapping but not strictly identical. For example, cognitive neuroscientists have found that religious experiences often involve activation of the default mode network (DMN), which is associated with self-referential thinking and mind-wandering.)

Neural Correlates of Experiencing Spirituality: Imaging Structure & Specific Networks

According to Miller, spirituality is linked to greater cortical thickness in certain brain regions, which may protect against depression. The occipital lobe is responsible for processing visual perception in the brain. The parietal lobe helps us position ourselves within sensory environments, and the precuneus is the region of the parietal lobe that's involved in reflection. Miller explains that the brain's occipital lobe, parietal lobe, and precuneus are linked to depression.

(Shortform note: One way to understand how increased cortical thickness in these regions might protect against depression is through the concept of “cognitive reserve.” Cognitive reserve is the brain’s ability to adapt and compensate for damage or stress. Stern, who coined the term, explains that people with higher cognitive reserve can better handle life’s challenges without experiencing long-term negative effects. In this view, extra thickness in these brain areas might represent additional, well-practiced neural pathways that help the brain absorb stress and prevent setbacks from turning into persistent low mood.)

Participants who prioritized spirituality and religion had a healthier neural structure than those who considered spirituality and religion to be moderately, less, or not at all important. The participants with deep personal spirituality showed high-amplitude alpha waves from the rear brain. This wavelength is also produced at the brain's rear in meditating monks during some practices, and is initiated in people taking SSRI drugs to address depression. The measurement of high-amplitude alpha waves was even more prominent in those participants who were not only personally spiritual but had also recovered from significant depression.

(Shortform note: Alpha waves are brain signals that oscillate at a frequency of 8-12 Hz and are measured at the back of the head using an electroencephalogram (EEG). High-amplitude alpha waves indicate that the brain is suppressing some sensory input and turning attention inward. This is why they’re associated with meditation, which involves focusing attention inward.)

Spirituality, Mental Wellbeing & the Awakened Brain

Spirituality is connected to mental well-being and can protect against depression. Miller defines spirituality as feeling connected to a sacred universe or divine entity. It can be practiced as part of a faith tradition, but it's different from religion.

Spirituality is especially beneficial for adolescents, who have a higher risk of developing mental health issues. It can also guard against substance abuse. The protective effects increase when spirituality is shared between a parent and offspring. For example, when a mother and child both have a strong spiritual foundation, the child's chances of developing depression are reduced fivefold. This holds even if the mom is depressed or when other factors that increase depression risk are present.

(Shortform note: Spirituality may not always protect against depression. For example, if an adolescent is experiencing a spiritual struggle, such as feeling abandoned by God, this can increase their risk of depression. This is known as “negative religious coping,” and it can lead to greater psychological distress.)

Cultivating & Applying Awakened Awareness

Now, we’ll explore practices for cultivating awakened awareness and its impacts and applications.

Practices for Cultivating Awakened Awareness

Direct Practices for Cultivation

Miller suggests that immersing yourself in natural settings and practicing mindfulness can help cultivate awareness and awakening. Being mindful allows us to detach from our thoughts and quiet our minds, which prepares us for spiritual awareness. Being in nature has similar effects. Research indicates that strolling through natural settings can significantly reduce anxious feelings, negative thinking, and negative emotions while improving short-term memory. It also reduces activity in the brain region associated with inner chatter.

The Potential Risks of Mindfulness

While immersing yourself in natural settings and practicing mindfulness can be beneficial, it’s important to recognize that these practices may not be suitable for everyone. In The Buddha Pill, the authors argue that meditation and mindfulness are not inherently gentle relaxation techniques but powerful psychological practices that can bring repressed material to the surface too quickly for some individuals. For a vulnerable minority of practitioners—especially those with a history of trauma, emotional fragility, or psychosis—intensive mindfulness practices in secluded natural settings can intensify anxiety and fear, trigger dissociative or psychotic-like experiences, and lead to destabilization. Therefore, these practices are safest when carefully adapted and sometimes professionally supervised.

Guided visualization and relaxation exercises can also quiet the mind and prepare it for spiritual insight. Miller explains that these practices soothe your nervous system and reduce reactivity, making recovery easier. They can also help you realize that you are connected to your ancestors, loved ones, higher self, and higher power in ways that go beyond physical existence.

(Shortform note: While guided visualization and relaxation exercises can be helpful for many people, they can also be harmful for some. In The Body Keeps the Score, Bessel van der Kolk explains that for people with unresolved trauma, these practices can trigger overwhelming memories or dissociation. When these exercises evoke a sense of connection to ancestors, loved ones, your higher self, or a higher power beyond physical existence, they can also bring up feelings of loss, abandonment, or existential fear.)

Indicators of Emerging Awareness

Significant happenstance is an indicator of developing awareness. Miller describes synchronicity as the connection between two seemingly unrelated events in terms of meaning or awareness. It may assist you in validating your intuition and the insights you receive unexpectedly. There are three kinds of synchronicity: when what's going on inside and outside you both connect to a singular event, when your external experiences reflect a shared underlying meaning, and when separate people have experiences that are interconnected and express a common occurrence. Synchronicity indicates that you're in harmony with the energy of existence.

The Origins of Synchronicity

The concept of synchronicity was first introduced by Carl Jung in his book Synchronicity: An Acausal Connecting Principle. Jung defined synchronicity as “an acausal connecting principle.” He explains that synchronicity is a phenomenon that occurs when two or more events are meaningfully related, even though they have no causal connection. Jung developed the concept of synchronicity as part of his theory of archetypes, which are universal symbols and patterns that exist in the collective unconscious. He believed that synchronicity was a way for the unconscious mind to communicate with the conscious mind. Jung developed the concept of synchronicity in collaboration with physicist Wolfgang Pauli, who was interested in the relationship between psychology and physics.

Impacts & Applications of Enlightened Consciousness

Awakened awareness helps us perceive reality more accurately and make better decisions. Miller explains that it enables us to view the bigger picture, comprehend the effects of our decisions, and grasp the reasons behind them. It enables us to progress from trauma by offering fresh perspectives on it, shedding light on previously hidden truths. It assists us in reshaping our worldview, recovering, and developing.

(Shortform note: While awakened awareness can help you make better decisions and move past trauma, it can also have negative effects. If you use awakened awareness to reinterpret trauma without also working through the pain, you may be using spirituality to avoid healing. This can lead to unresolved wounds that fester and grow over time.)

Additionally, an awakened mindset can aid in recovery and change. It lets us view our pain from a fresh perspective, opening us up to new possibilities and insights.

(Shortform note: In 1995, psychologists Richard Tedeschi and Lawrence Calhoun published Posttraumatic Growth, which explored the idea that people can experience significant psychological shifts after enduring a crisis. Their work laid the foundation for a new field of research focused on understanding how individuals can find meaning and growth in the aftermath of trauma.)

Next, we’ll explore the psychological and therapeutic benefits, along with the societal and ecological impacts, of having heightened awareness.

Psychological & Clinical Benefits

Spirituality can protect against mood conditions and drug or alcohol misuse. Miller explains that it helps kids and teens build resilience. Adolescents with robust personal spirituality have a 35% to 75% lower chance of undergoing clinical depression, and are 40% to 80% less likely to develop substance abuse or dependence. The protection is strongest during the risk period when a first depressive episode is most probable. The chance for a spiritually protective awakening coexists with the risk of depression as we develop.

(Shortform note: Spirituality may not protect all adolescents from mood conditions and drug or alcohol misuse. Mark L. Hatzenbuehler, John E. Pachankis, and Julia Wolff found that adolescents living in highly religious communities that condemn their sexual orientation or gender identity are more likely to experience mood conditions and drug or alcohol misuse. The authors explain that the stigma these communities create can lead to feelings of isolation, rejection, and internalized shame, which can contribute to mental health challenges and unhealthy coping mechanisms.)

The journey of forming a unique spiritual identity affects resilience in additional ways. The increase in adolescent depression and addiction may indicate spiritual struggle. The increased prevalence of depression and addiction in adolescents may be due to young people's difficulties with spiritual development and lack of support from others. A genetic component may account for both the potential for depression and the ability to be spiritually conscious. Spirituality and depression could be interconnected aspects of the same thing, with a shared biological basis. What we label and identify as depression may, at times, actually be a craving for spiritual fulfillment—a natural aspect of human growth that's rooted in our genes and is harmful to suppress or reject.

Depression and Addiction as a Result of Adversity

While Miller’s argument that depression and addiction may be signs of spiritual struggle is compelling, it may not apply to all adolescents. For example, research shows that adolescents who experience childhood adversity and bullying are more likely to develop depression and substance use disorders. These adolescents are also more likely to have a family history of mood and addiction disorders. In these cases, it may be more helpful to view their depression and addiction as a result of these risk factors rather than as a craving for spiritual fulfillment.

Societal & Ecological Impacts

Miller argues that having awakened hearts can lessen social divides and improve our bond with Earth. It helps us make decisions that benefit both us and the greater good. It also enhances our bond with the natural world and increases the advantages we gain from it. In addition, it motivates us to regenerate our natural resources and transcend consumerism and misuse.

(Shortform note: Miller’s argument that having awakened hearts can lessen social divides and improve our bond with Earth is part of a larger intellectual tradition. For example, in Active Hope, Joanna Macy and Chris Johnstone argue that our feelings of care for people and the planet are the psychological foundation for collective efforts to reshape social systems and humanity’s relationship with Earth. They suggest that by recognizing our interconnectedness with all life, we can find the motivation and resilience needed to address global challenges.)