Auditory timing-tuned neural responses in the human auditory cortices

Ackooij, Martijn van; Paul, Jacob; Zwaag, Wietske van der; Stoep, Nathan Van der; Harvey, Ben M.

doi:10.1016/j.neuroimage.2022.119366

Cited by 4 publications

(1 citation statement)

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“…Although these studies did show the existence of a topographical representation of time in the human brain, a number of questions are still open. First, it is unclear whether chronomaps are speci c to vision (see for instance van Ackooij et al, 2022) and to discrimination tasks or whether they are amodal and exist independently from the sensory modality and the task at hand. Second, is time mapped in relative or absolute terms in chronomaps?…”

Section: Introductionmentioning

confidence: 99%

The Topographic Representation of Time and its Link With Temporal Context and Perception

Kulashekhar

Fortunato

Maaß

et al. 2022

Preprint

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Neuronal tuning and topography are mechanisms widely used in the brain to represent sensory information and also abstract features like time. In humans, temporal topography has been shown in a wide circuit of brain regions. However, it is unclear whether chronotopic maps are specific to vision, whether they map time in an absolute or relative fashion, to what extent they reflect objective or subjective time and whether they are influenced by temporal context. Here we asked human participants to reproduce the durations of sounds in two, partially overlapping, temporal contexts while we record high-spatial resolution fMRI. Both model-based and data driven analyses show the presence of auditory chronomaps in the auditory parabelt, intraparietal sulcus, and in supplementary motor area. Most importantly, when the same physical duration is presented in different temporal contexts, and thus perceived differently, different neuronal units respond to it. Those units are also spatially shifted according to the relative position of the perceived duration within each context. Finally, the pattern of activity is more similar within rather than across contexts suggesting their pivotal role in shaping the maps. These results highlight two important properties of chronomaps: their flexibility of representation and their dependency on the context.

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Section: Introductionmentioning

confidence: 99%