Lydia Richardson

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In various regions of the brain, neurons discriminate sensory stimuli by decreasing the similarity between ambiguous input patterns. Here, we examine whether this process of pattern separation may drive the rapid discrimination of visual motion stimuli in the lateral intraparietal area (LIP). Starting with a simple mean-rate population model that captures(More)
Decision-making is a cognitive process involving a choice between multiple alternatives. In recent years, there has been a lot of progress about understanding the way decisions are carried out in the brain. Neurons accumulate both evidence and noise over time, by a summation of spikes, in favor of a specific choice. It remains unclear, however, what are the(More)
I would also like to acknowledge the help of including but not limited to, and in no particular order: Special thanks to my wonderfully supportive and intelligent supervisor: Hélène Plamondon ii Abstract Implications for the endocannabinoid system in global cerebral ischemia has not been clearly defined. Ischemia produces an excitotoxic environment that is(More)
Free-field ultrasonic radiation inhibited the feeding of the macrofouling hydroid Garveia franciscana by causing tentacle contraction at the sonic degasification threshold. Within the frequency range of 250 to 2000 kilohertz, the threshold sound intensity (sonic degasification threshold) that caused tentacle contraction was directly proportional to(More)
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