Next Article in Journal
South American Values of the Optical Straylight Function
Next Article in Special Issue
The Evolution of the Pulvinar Complex in Primates and Its Role in the Dorsal and Ventral Streams of Cortical Processing
Previous Article in Journal
Recognition for Vision
Open AccessReview

Distinctive Spatial and Laminar Organization of Single Axons from Lateral Pulvinar in the Macaque

Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA 02118, USA
Received: 16 October 2019 / Revised: 20 November 2019 / Accepted: 13 December 2019 / Published: 18 December 2019
(This article belongs to the Special Issue Role of the Pulvinar in Visual Processing)
Pulvino-cortical (PC) projections are a major source of extrinsic input to early visual areas in the macaque. From bulk injections of anterograde tracers, these are known to terminate in layer 1 of V1 and densely in the middle cortical layers of extrastriate areas. Finer, single axon analysis, as reviewed here for projections from the lateral pulvinar (PL) in two macaque monkeys (n = 25 axons), demonstrates that PL axons have multiple arbors in V2 and V4, and that these are spatially separate and offset in different layers. In contrast, feedforward cortical axons, another major source of extrinsic input to extrastriate areas, are less spatially divergent and more typically terminate in layer 4. Functional implications are briefly discussed, including comparisons with the better investigated rodent brain. View Full-Text
Keywords: core and matrix; cortical layers; divergence; driving; extrastriate cortex; feedforward; multiple scales; multi-specific thalamo-cortical core and matrix; cortical layers; divergence; driving; extrastriate cortex; feedforward; multiple scales; multi-specific thalamo-cortical
Show Figures

Figure 1

MDPI and ACS Style

Rockland, K.S. Distinctive Spatial and Laminar Organization of Single Axons from Lateral Pulvinar in the Macaque. Vision 2020, 4, 1.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop