Brain Hack: 6 secrets to learning faster, backed by neuroscience | Lila Landowski | TEDxHobart

Introduction

The speaker introduces herself as a neuroscientist and lecturer, expressing her frustration with the lack of education on how to learn effectively.

• She emphasizes that it is not our fault that we struggle with learning, as we are not taught how to learn.

• The speaker explains that she will discuss six critical ingredients for effective learning: attention, alertness, sleep, repetition, breaks, and mistakes.

How We Learn

The speaker discusses the neuroscience behind learning and how our brains physically change in response to experience.

• Neuroplasticity is the brain's ability to physically change in response to experience.

• Synapses form between neurons when we learn something new or practice a skill.

• Growth cones help neurons find the correct place to connect in the brain during development.

Learning Ability Over Time

The speaker discusses how our ability to learn changes over time and why it gets harder as we age.

• Our ability to learn declines after age five and gets exponentially harder after our mid-twenties.

• Practice and perseverance are key factors in developing skills rather than innate talent.

Attention

The speaker discusses the importance of attention for effective learning and ways to improve it.

• Focused attention is crucial for retaining information long-term.

• Frequent context switching from social media use can result in measurable attention deficits.

• Exercise can improve attention both short-term and long-term.

Alertness

The speaker discusses the role of alertness in effective learning and ways to improve it.

• Alertness is necessary for effective learning and can be improved through physical activity, caffeine, or exposure to bright light.

• Napping can also improve alertness and learning.

Sleep

The speaker discusses the importance of sleep for effective learning and ways to improve sleep quality.

• Sleep is crucial for consolidating memories and improving learning.

• Good sleep hygiene practices such as avoiding screens before bed, keeping a consistent sleep schedule, and creating a comfortable sleeping environment can improve sleep quality.

Repetition

The speaker discusses the role of repetition in effective learning and ways to optimize it.

• Repetition is necessary for strengthening neural connections in the brain.

• Spaced repetition, or reviewing material at increasing intervals over time, is more effective than massed repetition.

Breaks

The speaker discusses the importance of taking breaks during learning sessions and ways to optimize break time.

• Taking breaks during learning sessions allows our brains to consolidate information and avoid burnout.

• Engaging in activities that promote relaxation or creativity during breaks can enhance learning outcomes.

Mistakes

The speaker discusses the role of mistakes in effective learning and ways to reframe them positively.

• Making mistakes is an essential part of the learning process as it helps us identify areas where we need improvement.

• Reframing mistakes as opportunities for growth rather than failures can enhance motivation and resilience.

Exercise and Alertness

The speaker discusses the relationship between exercise and alertness, as well as other ways to increase alertness.

Exercise for Improved Attention

• Just 20 minutes of moderate exercise can improve attention for about two hours afterwards.

• Moderate exercise is recommended before sitting down to study.

• Examples of exercises include jogging, star jumps, or challenging balance.

• Running up and down stairs at work is also a good option.

Activating the Fight or Flight System

• Activating the sympathetic nervous system (fight or flight system) results in increased alertness due to the release of adrenaline and noradrenaline.

• Breathing techniques like Wim Hof breathing can activate this system.

• A cold blast of water after a shower can also increase alertness.

Stress and Alertness

• Small stressors before learning tasks enhance learning by increasing adrenaline levels.

• However, chronic stress impairs memory and learning abilities.

• It's important to be kind to yourself when experiencing long-term stress.

Caffeine and Alertness

• Caffeine intake enhances learning and memory through various mechanisms in the brain.

• Eating decreases alertness by switching off the fight or flight system.

• Regular caffeine consumption can enhance learning abilities.

Limits to Alertness

• Studies show that humans go through an ultradian rhythm every 90 minutes where they are in peak alertness for 8 to 30 minutes in the middle of each cycle.

• Sleep is critical for memory consolidation, turning short-term memories into long-term memories.

• The hippocampus plays a crucial role in this process by keeping track of daily activities like a diary.

• Short-term memories get transferred to other parts of the brain during sleep.

Repetition and Learning

The speaker discusses the importance of repetition in learning.

Importance of Repetition

• Repetition is key to learning.

• It's not enough to hear or see something once and expect to remember it forever.

• Like exercising builds muscle, repetitive patterns of thinking or doing build memory.

Importance of Repetition in Learning

The brain needs repetition to create new connections and reinforce learning. Spacing out learning over multiple days helps build long-term memories.

Key Points:

• Repetition is important for learning as it flags to the brain that this is something important that needs to be reinforced.

• Use the spacing technique by repeating the thing you are trying to learn as many times as possible during the learning period.

• Spacing out learning over multiple days allows for better long-term memory retention.

Benefits of Shorter Learning Periods Over Multiple Days

Two shorter learning periods over different days result in significantly better learning than using the same amount of time on a single day.

Key Points:

• Two shorter learning periods over different days result in significantly better learning than using that same amount of time on a single day.

• One trial learning happens when there's a strong emotional component tied to an experience, such as happiness, sadness, or fear.

• One trial learning occurs because your brain wants to remember everything about that event so you know how to respond next time you encounter it or avoid it completely.

Importance of Breaks for Learning

Taking breaks after learning is important because it gives our brains a chance to replay information subconsciously and stabilize newly encoded information.

Key Points:

• Brakes are incredibly important for learning because they give our brains a chance to replay information subconsciously.

• Newly encoded information isn't very stable, and if you use those same networks too soon afterward, retrograde interference can occur and destroy newly encoded information.

• Take a 10 to 20 minute break after finishing your study session and wait at least an hour before trying to learn something similar.

Importance of Making Mistakes in Learning

Making mistakes is important for learning because it releases neuromodulators that improve attention and opens up a window for neuroplasticity.

Key Points:

• Making mistakes releases neuromodulators that improve attention and opens up a window for neuroplasticity.

• Anxiety and stress when making a mistake serve an important purpose by signaling the need to change and become more efficient.

• Set yourself up for a little bit of failure by quizzing yourself on the topic as you go, don't wait until you're ready.

Tips for Learning Better

In this section, the speaker provides tips on how to learn better.

How to Learn Better

• Increase your alertness, maybe through a little bit of exercise.

• Repeat the thing that you are trying to do as many times as you can in that training period and repeated over multiple days.

• Prioritize sleep in between learning sessions.

• Embrace your mistakes and make sure you take a 10 to 20 minute break after learning because your brain is going to thank you.

Conclusion

The speaker thanks the audience for their attention and hopes they learned something from the talk.