Our Impact

Of the top 10 cited papers in Neuroscience in the past 10 years, only 2 concern Cognitive Neuroscience.  Both of these papers were authored by the NCC lab!

Top cited NCC Lab papers from the past 10 years:

1672 total citations 
Separate neural systems value immediate and delayed monetary rewards. McClure et al (2004)

1794 total citations
The neural basis of economic decision-making in the ultimatum game. Sanfrey et al (2004)

New Paper: Multitasking/Multiplexing

Multitasking versus multiplexing: Toward a normative account of limitations in the simultaneous execution of control-demanding behaviors

S. F. Feng,  M. Schwemmer,  S. J. Gershman,  J. D. Cohen
Abstract

Why is it that behaviors that rely on control, so striking in their diversity and flexibility, are also subject to such striking limitations?

Typically, people cannot engage in more than a few—and usually only a single—control-demanding task at a time. This limitation was a defining element in the earliest conceptualizations of controlled processing; it remains one of the most widely accepted axioms of cognitive psychology, and is even the basis for some laws (e.g., against the use of mobile devices while driving).  Remarkably, however, the source of this limitation is still not understood.

Here, we examine one potential source of this limitation, in terms of a trade-off between the flexibility and efficiency of representation (“multiplexing”) and the simultaneous engagement of different processing pathways (“multitasking”).  We show that even a modest amount of multiplexing rapidly introduces cross-talk among processing pathways, thereby constraining the number that can be productively engaged at once.  We propose that, given the large number of advantages of efficient coding, the human brain has favored this over the capacity for multitasking of control-demanding processes.

 

Cognitive, Affective, & Behavioral Neuroscience

January 2014

 

 Multitasking vs. Multiplexing Paper PDF

 

css.php