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Comment
. 2008 Aug 6;28(32):7933-5.
doi: 10.1523/JNEUROSCI.1781-08.2008.

The arrow of time: how does the brain represent natural temporal structure?

Fabiana Mesquita Carvalho  1 , Nikolaus Kriegeskorte
Affiliations
Comment

The arrow of time: how does the brain represent natural temporal structure?

Fabiana Mesquita Carvalho et al. J Neurosci. .
No abstract available

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Figures

Figure 1.
Figure 1.
Hypothetical responses of different neurons and regions to a natural movie clip played forward and backward. This figure is intended as an invitation to imagine single-neuron responses, regional response-pattern information, and regional-average activation when a subject views natural dynamic stimuli forward and backward. A natural movie clip of a falling cat (top), presented forward (red) and backward (blue), might drive responses of six hypothetical types of neuron (rows 1–6) as shown. Columns depict the single-neuron activity time course (middle), the response-pattern information carried by a regional population of similar neurons with distinct tuning functions (middle right), and the regional-average activation (far right). This thought experiment suggests that the effects of the stimulus manipulations explored by Hasson et al. (2008) depend on the type of neuron (1–6) and the targeted level of organization (single neuron, pattern information, regional activation). [Note that we focus on the stimulus-driven component of the activity here. Results of Hasson et al. (2008) suggest greater effects of internal dynamics, when the stimulus-driven activity is lower in mean level or energy. This would suggest adding an internal-dynamics component to the backward-presentation time courses (blue) of neurons (2), (3), (4), and (6), but not (1) and (5).]
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