Neuroscience

Motivation Here we summarize a few common probabilistic neural population models. Adapted from reading notes and class presentations from Neuro QC316 taught by Jan Drugowitsch. LNP, GLM These are the simplist models of neurons.

Apr 16, 2022

Note on Neural Tuning and Information Given a stimuli with $D$ intrinsic dimensions, we consider how one neuron or a population of neurons is informative about this stimulus space. Specific Information (Mutual Information) Setup for specific information computation is easy given a certain response $r$ , compute the reduction of entropy of stimuli $\mathbb s$ .

Aug 24, 2020

Notes on Cortical Waves Methods

May 6, 2020

Notes on Visual Imagery Definition: Recreate the sensory world in mind in absense of physical stimuli. Usage in daily cognition Closely related to memory. We solve some cognitive task by recreating the visual scene in mind and examine the mind picture! Some tasks are memory about spatial some are feature memory! Usage in creative work Provides another way of thinking, other than verbal and logical induction. Intuition Characteristics of Imagery Is the representation spatial or propositional?

Nov 5, 2019

Note on Categorization and Concepts From lecture notes from Science of Behavior Configuration The relative configuration of a single elements Example: Face What defines a face? Components Essential feature Configural property Relative Invariance to many change in Stimuli

Oct 24, 2019

Based on Goldstein Book Chapter and lecture from Jeff Beck Note on Forms of Memory Definition pin down can be very tricky! Definition Retaining, retrieving, using information after the original information (stimuli) does not present. (Inner view) Any process that some past experience has an effect on the way the subject think and behave in the future. (Outer View) Thus can generalize into even non-animated things! Memory of magnet Use of Memory Longterm Memory Human: Remember things relevant for life. (name, pw, birthday, info about others, address, knowledge) Ecological: cache for food, foraging location. Shorterm Memory Continuity of awareness Different forms Memory has many forms.

Oct 1, 2019

Informative Fragment Approach to Object Recognition It’s intuitive that some basic features in the image of objects are informative to the category of the object. Thus, even for occluded images, the revealed fragments can also provide such information, so that we could recognize the object from few patches.

Sep 25, 2019

Note on Animal Perception From lecture of Science of Behavior What does it feel to be a bat!? Umwelt: the sensory world of an animal, can be very different from ours. Different precision, range … Use same modality in different ways: Sound Imaging Electro-/Magneto-reception “More extreme your claim, stronger your evidence!”

Sep 12, 2019

How to Parse Latin/Greek Anatomical/Physiological Terms TOC {:toc} 大部分现代医学 解剖术语似乎是文艺复兴之后生理学家创造的，但为了显得高端，使用当时的国际学术语言Latin书写。因为当时Latin在当时早已不是日常语言，所以大多是科学家们非常规整的用Classic Latin/Greek 的词根Root 词缀Pre-/Suffix 变位法Conjugation，人工构词产生的，算New Latin。所以知道了词根之后拼写起来单词就会像写中文组词一样，记忆起来也容易1，也更容易根据词形记忆解剖结构的位置。 词根 单个词大多是由词根词缀组合而成 比如 肋骨rib= costa costae(单数形容词) costarum(复数形容词) 腹股沟groin= Ilium Ilio(变位形式) 合在一起成了Iliocostalis 髂肋肌 Wikipedia List of medical roots, suffixes and prefixes

Sep 7, 2019

Note on Behavioral Study History of Behavioral Science Two historical trends of study combines into modern comparative cognition / behavioral science study. Comparative Psychology More in context of psychology: Athropocentric

Aug 28, 2019