Andrew Keenan Richardson presents the second part of a series on cognitive neuroscience, discussing the computation done by the visual and auditory systems of our brains. We will cover how our perceptual systems can be thought of algorithmically, with a focus on the different data representations used at different stages of perception. Meetup starts at 3:30pm, talk starts at 4pm.

Cambridge/Boston-area Less Wrong meetups start at 3:30pm, and have an alternating location:

• 1st Sunday meetups are at Citadel in Porter Sq, at 98 Elm St, apt 1, Somerville.

• 3rd Sunday meetups are in MIT's building 66 at 25 Ames St, room 156. Room number subject to change based on availability; signs will be posted with the actual room number.

(We also have last Wednesday meetups at Citadel at 7pm.)

Our default schedule is as follows:

—Phase 1: Arrival, greetings, unstructured conversation.

—Phase 2: The headline event. This starts promptly at 4pm, and lasts 30-60 minutes.

—Phase 3: Further discussion. We'll explore the ideas raised in phase 2, often in smaller groups.

—Phase 4: Dinner.