+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Spectral mechanisms in the tree squirrel retina

, : Spectral mechanisms in the tree squirrel retina. Journal of Comparative Physiology A Sensory Neural & Behavioral Physiology 162(6): 773-780

The retina of the gray squirrel (Sciurus carolinensis) contains rods and cones in a ratio of about 2:3. The spectral mechanisms in this retina were examined in behavioral and electrophysiologyical experiments. Tests of color vision revealed that this animal has a spectral neutral point at about 500 nm and, thus, dichromatic color vision. Recordings made from single optic nerve fibers and results obtained from an analysis of the flicker photometric electroretinogram (ERG) indicated that vision in the gray squirrel is based on three spectral mechanisms. One of these, presumably rod-based, has peak sensitivity at about 502 nm. The other two mechanisms reflect the presence of two classes of cone having average peak sensitivity of about 444 nm and 543 nm.

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006459729

PMID: 3397920

DOI: 10.1007/bf00610966

PDF Full Text: Spectral mechanisms in the tree squirrel retina

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Li, J.; Chen, G.; Webster, J.M.; Czyzewska, E., 1995: Antimicrobial metabolites from a bacterial symbiont. Two types of antibiotics, namely, indoles and dithiolopyrrolones, have been isolated and identified from Xenorhabdus bovienii A2. Compounds 1 and 2 showed strong activity against Cryptococcus neoformans, compounds 3 and 4 showed strong activity ag...

Turner, M.; Robbins, K., 1996: Farm incomes in South West England 1994/95. This report presents and discusses the 1994/95 results of the annual Farm Business Survey in South West England in the counties of Cornwall, Devon, Dorset and Somerset. The identical sample of 227 farms is considered under five farm types (special...

A.H.mmadi, A.; Al-Sheikh, A.; Ammoury, A.; Ghosn, S.; Gisondi, P.; Hamadah, I.; Kibbi, A-Ghani.; Shirazy, K., 2016: Experience and challenges for biologic use in the treatment of moderate-to-severe psoriasis in Africa and the Middle East region. NlmCategory="UNASSIGNED">The incidence of psoriasis in Africa and the Middle East (AfME) is high as in other regions and represents a significant problem for both dermatologists and patients. Psoriasis co-morbidities such as obesity,...

Andersson, A.M.; Olsen, M.; Zhernosekov, D.; Gaardsvoll, H.; Krog, L.; Linnemann, D.; Bock, E., 1993: Age-related changes in expression of the neural cell adhesion molecule in skeletal muscle: a comparative study of newborn, adult and aged rats. Neural cell adhesion molecule (NCAM) is expressed by muscle and involved in muscle-neuron and muscle-muscle cell interactions. The expression in muscle is regulated during myogenesis and by the state of innervation. In aged muscle, both neurogenic...

Bronner G.; Triboulet C.; Chauvel J.J., 1988: The Archean and early Proterozoic iron formations of the Reguibat Shield (West African Craton); an important link between North and South America. Journal of African Earth Sciences 7(2): 515-516

Bardyn V.I.; Kostyayev A.G., 1990: Geochemical study of friable, Cenozoic deposits of East Antarctica. Pages 47 1990

Kazamatsuri H.; Chien C P.; Cole J.O., 1972: Treatment of tardive dys kinesia part 1 clinical efficacy of a dopamine depleting agent tetrabenazine. Archives of General Psychiatry 27(1): 95-99

Font J.; Gracia A.; D.M.rch P., 1990: Synthesis of 5 alkyl 4 bromo 5 hydroxy 2 5h furanones and 5 alkylidene 4 bromo 2 5h furanones. Tetrahedron Letters 31(38): 5517-5520

Dalquest W.W.; Stangl F.B.Jr, 1989: Late pleistocene mammals from the northwestern corner of the oklahoma panhandle usa. An early, late Wisconsin mammalian local fauna, radiocarbon dated at ca. 31,000 years before present, was obtained from a cutbank in Tesequite Canyon in the northwestern corner of Cimarron County, Oklahoma. The fauna includes 14 taxa: proboscidian...

Voskuyl, A.E.; Zwinderman, A.H.; Westedt, M.L.uis; Vandenbroucke, J.P.; Breedveld, F.C.; Hazes, J.M.W., 1996: The mortality of rheumatoid vasculitis compared with rheumatoid arthritis. Objective: To determine whether the mortality of patients with rheumatoid vasculitis (RV) is increased in comparison with that of patients with rheumatoid arthritis (RA). Methods: The mortality of all RV patients identified in 1980-1992 (n = 61) w...