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Participate in Cognitive Neuroscience Experiments

Participate in experiments at www.tatalab.ca to understand how mental representations are formed, interfered, and transformed in the brain. Discover neural codes and mechanisms behind sensory and motor representations.

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Participate in Cognitive Neuroscience Experiments

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  1. Participate in Cognitive Neuroscience Experiments for extra credit! www.tatalab.ca

  2. Mental Representations • Here’s one possible way to represent information in a brain… • A “labeled line”: • A “labeled line” • Activity on this unit “means” that a line is present • This one encodes bars or lines

  3. Mental Representations • Mental representations can start with sensory input and progress to more abstract forms • texture defined boundaries are representations arrived at by synthesizing the local texture features

  4. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour

  5. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour RED

  6. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour BLUE

  7. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour GREEN

  8. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour RED

  9. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour BLUE

  10. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour GREEN

  11. Mental Representations • Mental Representations can interfere • Stroop task: name the colour in which the word is printed (I.e. don’t read the word, just say the colour • The mental representation of the colour and the representation of the text are incongruent and interfere • one representation must be selected and the other suppressed • This is one conceptualization of attention

  12. Mental Representations • Representations in neural a neural code aren’t limited to sensory information • Place cells in hippocampus represent location of an animal in a local coordinate system • Spike rate on a place cell is high when the animal is near one spot but trails off when the animal moves away Moser et al. 2008

  13. Mental Representations • Representations in neural a neural code aren’t limited to sensory information • Motor Neurons represent intended direction of limb movement • Spike rate increases when monkey is going to make a movement in a particular direction and trails off if the monkey is going to make a very different movement

  14. Mental Representations • The cognitive neuroscientists asks: • where are these representations formed? • What is the neural mechanism? What is the code for a representation? • What is the neural process by which representations are transformed?

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