- [[EEG and ERPs]], [[goals of cognitive neuroscience]] - [[drift diffusion model of choice and reaction time]]: models used to make numerical predictions of the actual overt behavior - [[pure insertion assumption]] - [[lateralized readiness potential LRP]] # Idea The study of the time-course of information processing. The assumption is that the cognitive system is comprised of a sequence of time-consuming mental processes whose activities are manifested through certain overt behavioral measures, such as RT, response accuracy, and [[speed-accuracy tradeoffs in reaction times]]. Chronometricians suggest there are (usually covert) processes associated with stimulus recognition and evaluation, and with response organization and execution. The challenge for cognitive scientists is to understand these processes. Chronometricians rely on measures of overt behavior to understand what are, by definition, covert processes. ```mermaid graph LR warn --> prepare1 --> stimulus --> prepare2 --> response ``` From [[Coles 1989 modern mind brain reading - lateralized readiness potential]] ![[Pasted image 317.png]] The only observation available is the response ($output$) of the system to variation in the input ($input$), and Chronometricians want to understand how $f$ converts $input$ to $output$. $f: input \rightarrow output$ # References - [[Posner 1978 chronometric explorations of mind]] - [[Coles 1989 modern mind brain reading - lateralized readiness potential]] - [[Meyer 1988]] - [[Hillyard 1983 eletrophysiology of cognitive processing]] - [[Luce 1986 response times]]