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Sleep

Brain zones

  • Brainstem
  • Cerebral cortex
  • Hypothalamus
  • Thalamus

Related conditions

  • Alzheimer’s disease
  • Depression
  • Parkinson’s disease
When we're sleep-deprived, we feel less intense joy, but more intense sadness.

Mechanism

While you sleep, your brain never truly rests. Your networks remain highly active, strengthening your memories, restoring vital functions and regulating your mood. Sleep also appears to help the brain clear metabolic waste, including proteins implicated in Alzheimer’s disease, through specialized clearance pathways. Because sleep supports so many essential processes, disruptions can have far-reaching effects on both our daily happiness and long-term cognitive health.

Research spotlight

Research shows that our internal biological clocks do more than just manage sleep: they regulate a vital daily conversation between the nervous and immune systems. Disruptions to these circadian rhythms can influence chronic pain and inflammation. By mapping these connections, researchers are exploring new treatments, including light-based therapies that target the body’s internal clock, with the goal of improving pain management and potentially reducing reliance on medications such as opioids.

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Perception

Brain zones

  • Insula
  • Occipital lobe
  • Parietal lobe
  • Temporal lobe
  • Thalamus

Related conditions

  • Brain cancer
  • Brain injury
  • Migraine
  • Multiple sclerosis
  • Stroke
  • Vision loss or blindness
Imagine if we could tell which patients are truly unaware and which ones are perceiving the world around them, but are unable to respond.

Mechanism

Your brain transforms light, sound, touch, taste and smell into a rich picture of the world around you. Rather than simply receiving data, highly specialized networks actively interpret these raw signals, allowing you to appreciate music, recognize faces and make sense of everyday experiences. Understanding how this works becomes critical when these processes break down, especially in severe cases where a patient is unable to respond to the outside world, yet still retains some ability to perceive, understand and even follow commands.

Research spotlight

Historically, determining whether a patient with a severe brain injury is truly unaware or simply unable to respond has relied largely on bedside examinations. Today, researchers are developing portable brain-monitoring technologies that can reveal cognition invisible from the outside. By measuring how the brain perceives and responds to sounds, stories or commands, these tools can provide objective evidence of preserved brain function and, in some patients, hidden awareness—helping clinicians better assess patients and identify those with greater potential for recovery.

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Movement

Brain zones

  • Basal ganglia
  • Brainstem
  • Cerebellum
  • Primary motor cortex

Related conditions

  • ALS
  • Brain cancer
  • Brain injury
  • Epilepsy
  • Multiple sclerosis
  • Parkinson’s disease
  • Stroke
We get to press a button, the patient hears a beep, and suddenly their tremor stops. It’s incredibly rewarding.

Mechanism

Every effortless movement is an extraordinary feat of coordination. Reach for a cup and, in an instant, your brain plans the movement, activates the right muscles, predicts what will happen and uses a constant stream of sensory feedback to adjust your hand as it moves. This remarkable choreography depends not on a single “movement centre,” but on vast, interconnected networks working together. When communication across these networks is disrupted, even the simplest movements can become difficult.

Research spotlight

For decades, movement disorder therapies like deep brain stimulation (DBS) largely relied on trial and error. Today, researchers are changing this by recording brain activity directly during neurosurgery to identify real-time biomarkers. This breakthrough provides clinicians with objective guidance to tune DBS, transforming it from a one-size-fits-all approach into a precise, circuit-based therapy that dramatically improves patient outcomes.

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Sense of direction

Brain zones

  • Entorhinal cortex
  • Hippocampus
  • Parietal lobe
  • Thalamus

Related conditions

  • Alzheimer’s disease
  • Brain injury
  • Dementia
  • Stroke
Does outsourcing our sense of direction to GPS weaken the brain systems that are most vulnerable to cognitive decline?

Mechanism

Your brain contains an internal GPS that helps you assess where you are, remember where you’ve been and find your way home. Specialized cells work together to create and update dynamic mental maps of your surroundings, allowing you to orient yourself in space and explore new environments.

Research spotlight

Getting lost in a familiar place happens to people with Alzheimer’s disease, because the entorhinal cortex, the area responsible for building our sense of space, is among the first regions affected by the disease. With this in mind, researchers are now investigating a compelling hypothesis: whether outsourcing our orientation to digital GPS is wearing down the brain regions most vulnerable to cognitive decline.

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Social Connection

Brain zones

  • Amygdala
  • Prefrontal cortex
  • Temporoparietal junction
  • Temporal lobe

Related conditions

  • Autism
  • Brain injury
  • Dementia
  • Schizophrenia
Positive social interactions release dopamine and oxytocin which increases our motivation to bond.

Mechanism

The ability to recognize a familiar face, understand another person’s emotions and build meaningful relationships is central to being human. When we bond with others, or even just receive a smile, our brain’s reward system instantly activates. These affirming social interactions trigger the release of dopamine, oxytocin and our body’s natural opioids, contributing to the powerful biological drive to connect, cooperate and empathize.

Research spotlight

By uncovering the biological drivers of empathy and communication, researchers are gaining critical insights into conditions that alter how people relate to one another. Understanding how these reward pathways function, or fail to function, is key to developing better support systems and targeted therapies for individuals navigating the social challenges associated with conditions like autism, schizophrenia or dementia.

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Emotions

Brain zones

  • Amygdala
  • Anterior cingulate cortex
  • Hippocampus
  • Insula
  • Prefrontal cortex

Related conditions

  • Anxiety
  • Bipolar disorder
  • Brain injury
  • Depression
  • PTSD
Unlike for some other common conditions, there's still no blood test or brain scan that can tell you which treatment will actually work for you.

Mechanism

Your brain constantly processes emotions and experiences, helping you respond to challenges, recover from setbacks and connect with others. Complex neural networks work continuously to process this information. They’re assessing potential threats and regulating your reactions, such as triggering a fight-or-flight response. This sophisticated system allows you to adapt to changing environments and forms the foundation of your emotional well-being.

Research spotlight

Currently, over 1 in 5 Canadians diagnosed with depression live with a treatment-resistant form where standard approaches simply aren’t enough. To change this, researchers are advancing targeted, non-invasive treatments (like magnetic brain stimulation) that offer significant improvement and renewed hope for those who need it. The ultimate goal is precision psychiatry, combining lived experience and psychological testing with brain imaging to objectively match patients to the right therapies more quickly.

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Memory & cognition

Brain zones

  • Entorhinal cortex
  • Hippocampus
  • Prefrontal cortex
  • Temporal lobe

Related conditions

  • ADHD
  • Alzheimer’s disease
  • Brain injury
  • Dementia
  • Stroke
In some cases, the memories may still be there and the challenge is finding a way back to them.

Mechanism

Memories are part of what makes us who we are. Every day, your brain continuously translates some fleeting moments into lasting knowledge, driving your ability to reason and learn. While the hippocampus acts as an indexing hub, these experiences are stored in networks across the specific regions that processed the original event: what we saw, smelled or felt. That’s why a simple sensory cue, like a familiar scent, can instantly bring a memory rushing back. This interconnected system seamlessly integrates our past with daily cognitive functions.

Research spotlight

Donations empower Canadian researchers to decode these complex networks and tackle cognitive decline. Fundamental discoveries are transformed into innovative therapies and inform prevention strategies. This vital research aims to preserve memory function and provide concrete solutions for patients facing dementia.

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Brain-Body connection

Brain zones

  • Brainstem
  • Hypothalamus
  • Insula

Related conditions

  • Anxiety
  • Depression
  • Multiple sclerosis
  • Parkinson’s disease
No two brains are identical. Two people can take the same medication, yet their brains can respond in entirely different ways.

Mechanism

Your brain may be the conductor, but your body is part of the orchestra. Your heart, gut, immune system and other organs send signals back and forth to the brain around the clock.In turn, the brain listens and responds, creating an intricate biological conversation that keeps your body in balance. Much of this happens without you ever realizing it, yet it influences everything from digestion and stress responses to mood and behaviour. When this delicate communication is disrupted, the effects can ripple across both brain and body.

Research spotlight

Because no two brains are truly alike, treating mental illness or neurological conditions cannot rely on a single, universal method. Researchers are using new tools to understand how diseases affect specific cell types differently across individuals. By recognizing this deep biological diversity, researchers can identify exactly where early dysfunction begins and potentially reverse it. This shift opens the door to highly targeted, personalized therapies that deliver care tailored to each patient.

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Speech & Language

Brain zones

  • Auditory cortex
  • Broca’s area
  • Inferior parietal cortex
  • Motor cortex
  • Wernicke’s area

Related conditions

  • ALS
  • Aphasia
  • Brain cancer
  • Brain injury
  • Stroke
Aphasia can profoundly disrupt a person's ability to speak, even when thoughts remain intact.

Mechanism

Your brain can transform thoughts into words and words into meaning in a fraction of a second. Highly specialized networks work together to process and produce language, coordinating listening, speaking, reading and writing so we can share complex ideas and emotions. When these intricate networks are affected, communication becomes difficult, fundamentally altering how people connect with the world around them.

Research spotlight

In Canada, a stroke occurs every 7 minutes and many survivors develop aphasia, a condition that disrupts the ability to find words even when a person’s thoughts remain perfectly clear. To help patients recover their voice, researchers are using computational modelling to understand why brains respond differently to meaning-based and sound-based cues. This data is crucial to moving rehabilitation beyond a one-size-fits-all approach towards the personalized medicine of tomorrow.