Funzioni dell'Encefalo
Il sistema limbico si trova nella regione profonda dell’encefalo. Esso comprende: l’ipotalamo, che produce vari neurormoni e controlla l’azione dell’ipofisi; l’ippocampo, che sembra abbia un ruolo importante nell’apprendimento, nella memoria e nell’espressione di emozioni come l’eccitazione e la collera; l’amigdala, che riceve stimoli acustici e visivi ed elabora risposte di tipo emotivo. Il talamo deriva anch’esso dal prosencefalo; esso raccoglie stimoli sensoriali provenienti dagli organi interni, dalla superficie cutanea e li invia al sistema limbico e alla corteccia. La formazione reticolare, altra struttura profonda dell’encefalo. Essa ha una funzione di smistamento e di filtrazione delle informazioni che giungono dall’esterno, mediante i recettori sensoriali di tutti gli organi; gli stimoli possono essere rielaborati e inviati alla corteccia cerebrale, che elabora a sua volta adeguate risposte.
Molte funzioni motorie e sensoriali sono state localizzate in aree specifiche della corteccia di entrambi gli emisferi del cervello, ciascuno dei quali controlla la parte opposta del corpo. Meno definite sono le aree associative, individuate principalmente nella corteccia frontale, legate al pensiero e alle emozioni e responsabili del coordinamento degli stimoli sensoriali. Le due aree del linguaggio, quella di Wernicke (comprensione del linguaggio) e quella di Broca (produzione del linguaggio), sono state invece localizzate entrambe nella corteccia dell’emisfero sinistro.
Le aree cerebrali coinvolte nel processo di memorizzazione possono essere evidenziate mediante tomografia a emissione di positroni. Nelle due immagini, si osserva come nella fase di codifica sia attiva la corteccia prefrontale sinistra e nella fase di rievocazione la corteccia prefrontale destra.
Dominanza: sebbene il cervello abbia una struttura simmetrica, con due emisferi dotati di aree motorie e sensoriali corrispondenti, alcune funzioni intellettive sono limitate a un solo emisfero. In ogni individuo, l’emisfero dominante presiede al linguaggio e alle operazioni logiche, mentre l’altro controlla le emozioni, le capacità artistiche e la percezione spaziale. In quasi tutti i destrimani e in molti mancini l’emisfero dominante è il sinistro.
17 commenti:
This design is incredible! You most certainly know how to
keep a reader entertained. Between your wit and your videos, I was almost
moved to start my own blog (well, almost...HaHa!) Fantastic job.
I really loved what you had to say, and more than that, how you presented it.
Too cool!
Here is my web page: wealthwayonline.com
Thanks for finally writing about > "Funzioni dell'Encefalo" < Loved it!
My web site www.
maxleticssports.com
It's really a great and helpful piece of info. I'm satisfied that you simply shared this useful information with us.
Please stay us up to date like this. Thanks for sharing.
Here is my web page: Louis Vuitton Bags
Pretty nice post. I just stumbled upon your blog and wished to say that I have truly enjoyed surfing around your blog posts.
In any case I will be subscribing to your
feed and I hope you write again very soon!
Also visit my blog post - Louis Vuitton Bags
Hi there, I enjoy reading all of your post. I like to write
a little comment to support you.
Also visit my site Louis Vuitton Handbags
Good way of explaining, and pleasant piece of writing to take
information concerning my presentation subject, which i
am going to present in school.
Take a look at my web site: Sac Guess Pas Cher
I am actually happy to glance at this weblog
posts which includes lots of helpful data, thanks for providing such data.
Here is my page - Recommended Reading
I visited multiple blogs except the audio
feature for audio songs existing at this site is really marvelous.
Also visit my homepage ... Sac Louis Vuitton
Excellent blog here! Also your web site loads up fast!
What web host are you using? Can I get your affiliate
link to your host? I wish my web site loaded up as quickly
as yours lol
Also visit my weblog: Louis Vuitton Handbags
Awesome blog you have here but I was wondering if you knew of any forums that cover the same topics talked about in this article?
I'd really love to be a part of online community where I can get opinions from other knowledgeable people that share the same interest. If you have any suggestions, please let me know. Thanks!
Have a look at my blog post :: Louis Vuitton Bags :: ::
Fantastic blog you have here but I was curious about if you knew
of any user discussion forums that cover the same topics discussed here?
I'd really like to be a part of community where I can get feedback from other knowledgeable people that share the same interest. If you have any suggestions, please let me know. Thanks!
My web-site - binaural beats
Do you mind if I quote a couple of your posts as long
as I provide credit and sources back to your weblog?
My website is in the very same area of interest as yours and my visitors would certainly benefit from a lot
of the information you provide here. Please let
me know if this alright with you. Thanks!
My webpage; Cheap Oakley Sunglasses
Thanks for one's marvelous posting! I definitely enjoyed reading it, you will be a great author. I will be sure to bookmark your blog and may come back at some point. I want to encourage that you continue your great posts, have a nice evening!
Also visit my web page Sac Louis Vuitton
I love your blog.. very nice colors & theme. Did you design this website yourself or did you hire someone to do
it for you? Plz respond as I'm looking to construct my own blog and would like to know where u got this from. thank you
My blog: Nike Air Max
That is a great tip especially to those new to the blogosphere.
Brief but very accurate information… Appreciate your
sharing this one. A must read post!
Also visit my blog Louis Vuitton Bags
Hi there excellent blog! Does running a blog similar to this require a large amount of work?
I have absolutely no expertise in coding however
I had been hoping to start my own blog soon.
Anyways, should you have any recommendations
or tips for new blog owners please share. I understand this is
off subject however I simply needed to ask. Kudos!
Here is my web page :: continue reading
ecig forum, smokeless cigarette, electronic cigarettes, e cigarette health, electronic cigarette brands, smokeless cigarettes
Posta un commento